CN107705247A - A kind of method of adjustment of image saturation, terminal and storage medium - Google Patents
A kind of method of adjustment of image saturation, terminal and storage medium Download PDFInfo
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- CN107705247A CN107705247A CN201711046126.2A CN201711046126A CN107705247A CN 107705247 A CN107705247 A CN 107705247A CN 201711046126 A CN201711046126 A CN 201711046126A CN 107705247 A CN107705247 A CN 107705247A
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- 238000005286 illumination Methods 0.000 claims abstract description 42
- 230000006854 communication Effects 0.000 claims description 21
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
- G06T3/04—Context-preserving transformations, e.g. by using an importance map
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Abstract
The invention discloses a kind of method of adjustment of image saturation, this method includes：Pending image is transformed into yuv space from rgb space, obtains the first image；Obtain brightness value corresponding to each pixel in the first image；According to brightness value and default lightness threshold, target pixel points are determined from the first image；Obtain illuminance corresponding to target saturation degree corresponding to target pixel points and the first image；When illuminance is less than default illumination threshold value, according to illuminance and default saturation degree regulation rule, the adjustment of target saturation degree is adjusted, obtains the second image.The invention also provides a kind of terminal and a kind of computer-readable recording medium, by implementing such scheme, improves the display effect of image.
Description
Technical field
The present invention relates to technical field of image processing, more particularly to a kind of method of adjustment of image saturation, terminal and deposit
Storage media.
Background technology
With the continuous development of electronic technology, the terminal such as smart mobile phone, tablet personal computer is not limited solely to provide list already
One communication function, but gather multi -function in integral whole.For example, terminal can be handled image, so as to more be accorded with
Close the image of user's request.
In the prior art, multiple color be present in image, when the color distortion of image, can often pass through terminal-pair
The saturation degree of image is adjusted.Specifically, the adjustment that terminal-pair image carries out saturation degree is to be directed to each pixel in image
Point carries out the saturation degree adjustment of same degree.That is, even if the pixel that shade differs in image in itself be present,
The pixel that terminal can also differ to shade improves the saturation degree of same degree, or reduces the saturation of same degree
Degree.
However, in a practical situation, when the illuminance that image is shown is relatively low, terminal is adjusted every in image with same degree
The saturation degree of one pixel, it will cause the color distortion of the light-colored part in image.
The content of the invention
In order to solve the above problems, the embodiments of the invention provide a kind of method of adjustment of image saturation, terminal and deposit
Storage media, the adjustment of different degrees of saturation degree can be carried out to different pixels point according to the illuminance of image, improves image
Display effect.
The technical proposal of the invention is realized in this way：
The embodiments of the invention provide a kind of method of adjustment of image saturation, methods described includes：
Pending image is transformed into yuv space from rgb space, obtains the first image；
Obtain brightness value corresponding to each pixel in described first image；
According to the brightness value and default lightness threshold, target pixel points are determined from described first image；
Obtain illuminance corresponding to target saturation degree corresponding to the target pixel points and described first image；
It is right according to the illuminance and default saturation degree regulation rule when the illuminance is less than default illumination threshold value
The target saturation degree adjustment is adjusted, and obtains the second image.
It is described according to the brightness value and default lightness threshold in such scheme, mesh is determined from described first image
Pixel is marked, including：
The pixel that brightness value in described first image is more than to the default lightness threshold is defined as the object pixel
Point.
It is described according to the brightness value and predetermined luminance threshold value in such scheme, mesh is determined from described first image
After marking pixel, methods described also includes：
When the illuminance is more than or equal to the default illumination threshold value, according to default saturation degree adjusted value, to described
Target saturation degree is adjusted, and obtains the 3rd image.
It is described according to the illuminance and default saturation degree regulation rule in such scheme, to the target saturation degree
Adjustment is adjusted, and obtains the second image, including：
According to the illuminance, and the corresponding relation of default illuminance scope and default adjusted value, the target is satisfied
It is adjusted with degree, obtains second image.
It is described according to the illuminance, and default illuminance scope and the correspondence of default adjusted value in such scheme
Relation, the target saturation degree is adjusted, obtains second image, including：
If the illuminance is more than the first default illuminance and is less than or equal to the second default illuminance, according to the first default adjustment
Value is adjusted to the target saturation degree, obtains second image；
If the illuminance is more than the described second default illuminance and is less than or equal to the 3rd default illuminance, default according to second
Adjusted value is adjusted to the target saturation degree, obtains second image；
If the illuminance is more than the described 3rd default illuminance and is less than or equal to the 4th default illuminance, default according to the 3rd
Adjusted value is adjusted to the target saturation degree, obtains second image；Wherein, the described first default adjusted value is more than institute
The second default adjusted value is stated, the described second default adjusted value is more than the described 3rd default adjusted value.
It is described when the illuminance is less than default illumination threshold value in such scheme, according to the illuminance and preset
Saturation degree regulation rule, target saturation degree adjustment is adjusted, after obtaining the second image, methods described also includes：
Second image is transformed into the rgb space from the yuv space, obtains target image.
The embodiments of the invention provide a kind of terminal, the terminal includes：Processor, memory and communication bus；
The communication bus, for realizing the connection communication between the processor and the memory；
The processor, it is following to realize for performing the adjustment programme of the image saturation stored in the memory
Step：
Pending image is transformed into yuv space from rgb space, obtains the first image；Obtain every in described first image
Brightness value corresponding to one pixel；According to the brightness value and default lightness threshold, target is determined from described first image
Pixel；Obtain illuminance corresponding to target saturation degree corresponding to the target pixel points and described first image；When the light
When illumination is less than default illumination threshold value, according to the illuminance and default saturation degree regulation rule, the target saturation degree is adjusted
It is whole to be adjusted, obtain the second image.
In above-mentioned terminal, the processor be specifically used for perform described image saturation degree adjustment programme, with realize with
Lower step：
The pixel that brightness value in described first image is more than to the default lightness threshold is defined as the object pixel
Point；
According to the illuminance, and the corresponding relation of default illuminance scope and default adjusted value, the target is satisfied
It is adjusted with degree, obtains second image；Wherein, if the illuminance is more than the first default illuminance and is less than or equal to second
Default illuminance, the target saturation degree is adjusted according to the first default adjusted value, obtains second image；It is if described
Illuminance is more than the described second default illuminance and is less than or equal to the 3rd default illuminance, according to the second default adjusted value to the mesh
Mark saturation degree is adjusted, and obtains second image；If the illuminance is more than the described 3rd default illuminance and is less than or equal to
4th default illuminance, the target saturation degree is adjusted according to the 3rd default adjusted value, obtains second image；Its
In, the described first default adjusted value is more than the described second default adjusted value, and it is pre- that the described second default adjusted value is more than the described 3rd
If adjusted value.
In above-mentioned terminal, the processor, it is additionally operable to described according to the brightness value and default lightness threshold, from institute
State after determining target pixel points in the first image, when the illuminance is more than or equal to the default illumination threshold value, according to
Default saturation degree adjusted value, is adjusted to the target saturation degree, obtains the 3rd image；
The processor, it is additionally operable to described when the illuminance is less than default illumination threshold value, according to the illuminance
With default saturation degree regulation rule, target saturation degree adjustment is adjusted, after obtaining the second image, by described second
Image is transformed into the rgb space from the yuv space, obtains target image.
The embodiment of the present invention additionally provides a kind of computer-readable recording medium, the computer-readable recording medium storage
There is one or more program, one or more of programs can be by one or more computing device, with realization
State the method for adjustment of image saturation.
As can be seen here, in the technical scheme of the embodiment of the present invention, pending image is transformed into by terminal from rgb space
Yuv space, obtain the first image；Obtain brightness value corresponding to each pixel in the first image；According to brightness value and preset
Lightness threshold, target pixel points are determined from the first image；Obtain target saturation degree and the first image corresponding to target pixel points
Corresponding illuminance；When illuminance is less than default illumination threshold value, according to illuminance and default saturation degree regulation rule, to target
Saturation degree adjustment is adjusted, and obtains the second image.That is, in the technical scheme of the embodiment of the present invention, terminal can
The adjustment of different degrees of saturation degree is carried out to different pixels point according to the illuminance of image, improves the display effect of image.
Brief description of the drawings
Fig. 1 is a kind of hardware architecture diagram for the optional mobile terminal for realizing each embodiment of the present invention；
Fig. 2 is a kind of communications network system Organization Chart provided in an embodiment of the present invention；
Fig. 3 is a kind of schematic flow sheet one of the method for adjustment of image saturation provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram that a kind of exemplary terminal provided in an embodiment of the present invention obtains pending image；
Fig. 5 is the schematic diagram that a kind of exemplary terminal provided in an embodiment of the present invention determines target pixel points；
Fig. 6 is the schematic diagram that a kind of exemplary terminal provided in an embodiment of the present invention obtains the second image；
Fig. 7 is a kind of schematic flow sheet two of the method for adjustment of image saturation provided in an embodiment of the present invention；
Fig. 8 is a kind of structural representation of terminal provided in an embodiment of the present invention.
Embodiment
It should be appreciated that the technical scheme that the specific embodiments described herein are merely illustrative of the present invention, is not used to
Limit protection scope of the present invention.
In follow-up description, the suffix using such as " module ", " part " or " unit " for representing element is only
Be advantageous to the explanation of the present invention, itself do not have a specific meaning.Therefore, " module " can mixedly make with " part "
With.
Terminal can be implemented in a variety of manners.For example, the terminal described in the present invention can include such as mobile phone, flat board
Computer, notebook computer, palm PC, personal digital assistant (Personal Digital Assistant, PDA), portable
Media player (Portable Media Player, PMP), guider, wearable device, Intelligent bracelet, pedometer etc. move
Dynamic terminal, and the fixed terminal such as digital TV, desktop computer.
It will be illustrated in subsequent descriptions by taking mobile terminal as an example, it will be appreciated by those skilled in the art that except special
Outside element for moving purpose, construction according to the embodiment of the present invention can also apply to the terminal of fixed type.
Referring to Fig. 1, its hardware configuration signal for a kind of optional mobile terminal of each embodiment of the realization present invention
Figure, the mobile terminal 100 can include：Radio frequency (Radio Frequency, RF) unit 101, Wi-Fi module 102, audio
Output unit 103, audio/video (A/V) input block 104, sensor 105, display unit 106, user input unit 107,
The parts such as interface unit 108, memory 109, processor 110 and power supply 111.It will be understood by those skilled in the art that Fig. 1
In the mobile terminal structure that shows do not form restriction to mobile terminal, mobile terminal can include more more or less than illustrating
Part, either combine some parts or different parts arrangement.
The all parts of mobile terminal are specifically introduced with reference to Fig. 1：
Radio frequency unit 101 can be used for receiving and sending messages or communication process in, the reception and transmission of signal, specifically, by base station
Downlink information receive after, handled to processor 110；In addition, up data are sent to base station.Generally, radio frequency unit 101
Including but not limited to antenna, at least one amplifier, transceiver, coupler, low-noise amplifier, duplexer etc..In addition, penetrate
Frequency unit 101 can also be communicated by radio communication with network and other equipment.Above-mentioned radio communication can use any communication
Standard or agreement, including but not limited to global system for mobile communications (Global System of Mobile
Communication, GSM), general packet radio service (General Packet Radio Service, GPRS), code division it is more
Location 2000 (Code Division Multiple Access 2000, CDMA2000), WCDMA (Wideband
Code Division Multiple Access, WCDMA), TD SDMA (Time Division-
Synchronous Code Division Multiple Access, TD-SCDMA), FDD Long Term Evolution
(Frequency Division Duplexing-Long Term Evolution, FDD-LTE) and time division duplex Long Term Evolution
(Time Division Duplexing-Long Term Evolution, TDD-LTE) etc..
Wi-Fi belongs to short range wireless transmission technology, and mobile terminal can help user to receive and dispatch by Wi-Fi module 102
Email, browse webpage and access streaming video etc., it has provided the user wireless broadband internet and accessed.Although Fig. 1
Wi-Fi module 102 is shown, but it is understood that, it is simultaneously not belonging to must be configured into for mobile terminal, completely can basis
Need to omit in the essential scope for do not change invention.
Audio output unit 103 can be in call signal reception pattern, call mode, record mould in mobile terminal 100
When under the isotypes such as formula, speech recognition mode, broadcast reception mode, by radio frequency unit 101 or Wi-Fi module 102 it is receiving or
It is sound that the voice data that person stores in memory 109, which is converted into audio signal and exported,.Moreover, audio output unit
103 can also provide performed to mobile terminal 100 the related audio output of specific function (for example, call signal reception sound,
Message sink sound etc.).Audio output unit 103 can include loudspeaker, buzzer etc..
A/V input blocks 104 are used to receive audio or video signal.A/V input blocks 104 can include graphics processor
(Graphics Processing Unit, GPU) 1041 and microphone 1042, graphics processor 1041 is in video acquisition mode
Or the static images or the view data of video obtained in image capture mode by image capture apparatus (such as camera) are carried out
Reason.Picture frame after processing may be displayed on display unit 106.Picture frame after the processing of graphics processor 1041 can be deposited
Storage is transmitted in memory 109 (or other storage mediums) or via radio frequency unit 101 or Wi-Fi module 102.Mike
Wind 1042 can connect in telephone calling model, logging mode, speech recognition mode etc. operational mode via microphone 1042
Quiet down sound (voice data), and can be voice data by such acoustic processing.Audio (voice) data after processing can
To be converted to the form output that mobile communication base station can be sent to via radio frequency unit 101 in the case of telephone calling model.
Microphone 1042 can implement various types of noises eliminations or restrainable algorithms to eliminate or suppress receiving and sending audio letter
Caused noise or interference during number.
Mobile terminal 100 also includes at least one sensor 105, such as optical sensor, motion sensor and other biographies
Sensor.Specifically, optical sensor includes ambient light sensor and proximity transducer, wherein, ambient light sensor can be according to environment
The light and shade of light adjusts the brightness of display panel 1061, and proximity transducer can close when mobile terminal 100 is moved in one's ear
Display panel 1061 and/or backlight.As one kind of motion sensor, accelerometer sensor can detect in all directions (general
For three axles) size of acceleration, size and the direction of gravity are can detect that when static, the application available for identification mobile phone posture
(such as horizontal/vertical screen switching, dependent game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, percussion) etc.；
The fingerprint sensor that can also configure as mobile phone, pressure sensor, iris sensor, molecule sensor, gyroscope, barometer,
The other sensors such as hygrometer, thermometer, infrared ray sensor, will not be repeated here.
Display unit 106 is used for the information for showing the information inputted by user or being supplied to user.Display unit 106 can wrap
Display panel 1061 is included, liquid crystal display (Liquid Crystal Display, LCD), Organic Light Emitting Diode can be used
Forms such as (Organic Light-Emitting Diode, OLED) configures display panel 1061.
User input unit 107 can be used for the numeral or character information for receiving input, and produce the use with mobile terminal
The key signals input that family is set and function control is relevant.Specifically, user input unit 107 may include contact panel 1071 with
And other input equipments 1072.Contact panel 1071, also referred to as touch-screen, collect touch operation of the user on or near it
(for example user uses any suitable objects or annex such as finger, stylus on contact panel 1071 or in contact panel 1071
Neighbouring operation), and corresponding attachment means are driven according to formula set in advance.Contact panel 1071 may include touch detection
Two parts of device and touch controller.Wherein, the touch orientation of touch detecting apparatus detection user, and detect touch operation band
The signal come, transmits a signal to touch controller；Touch controller receives touch information from touch detecting apparatus, and by it
Contact coordinate is converted into, then gives processor 110, and the order sent of reception processing device 110 and can be performed.In addition, can
To realize contact panel 1071 using polytypes such as resistance-type, condenser type, infrared ray and surface acoustic waves.Except contact panel
1071, user input unit 107 can also include other input equipments 1072.Specifically, other input equipments 1072 can wrap
Include but be not limited to physical keyboard, in function key (such as volume control button, switch key etc.), trace ball, mouse, action bars etc.
One or more, do not limit herein specifically.
Further, contact panel 1071 can cover display panel 1061, detect thereon when contact panel 1071 or
After neighbouring touch operation, processor 110 is sent to determine the type of touch event, is followed by subsequent processing device 110 according to touch thing
The type of part provides corresponding visual output on display panel 1061.Although in Fig. 1, contact panel 1071 and display panel
1061 be the part independent as two to realize the input of mobile terminal and output function, but in certain embodiments, can
Input and the output function of mobile terminal are realized so that contact panel 1071 and display panel 1061 is integrated, is not done herein specifically
Limit.
Interface unit 108 is connected the interface that can pass through as at least one external device (ED) with mobile terminal 100.For example,
External device (ED) can include wired or wireless head-band earphone port, external power source (or battery charger) port, wired or nothing
Line FPDP, memory card port, the port for connecting the device with identification module, audio input/output (I/O) end
Mouth, video i/o port, ear port etc..Interface unit 108 can be used for receiving the input from external device (ED) (for example, number
It is believed that breath, electric power etc.) and the input received is transferred to one or more elements in mobile terminal 100 or can be with
For transmitting data between mobile terminal 100 and external device (ED).
Memory 109 can be used for storage software program and various data.Memory 109 can mainly include storing program area
And storage data field, wherein, storing program area can storage program area, application program (such as the sound needed at least one function
Sound playing function, image player function etc.) etc.；Storage data field can store according to mobile phone use created data (such as
Voice data, phone directory etc.) etc..In addition, memory 109 can include high-speed random access memory, can also include non-easy
The property lost memory, a for example, at least disk memory, flush memory device or other volatile solid-state parts.
Processor 110 is the control centre of mobile terminal, utilizes each of various interfaces and the whole mobile terminal of connection
Individual part, by running or performing the software program and/or module that are stored in memory 109, and call and be stored in storage
Data in device 109, the various functions and processing data of mobile terminal are performed, so as to carry out integral monitoring to mobile terminal.Place
Reason device 110 may include one or more processing units；Preferably, processor 110 can integrate application processor and modulatedemodulate is mediated
Device is managed, wherein, application processor mainly handles operating system, user interface and application program etc., and modem processor is main
Handle radio communication.It is understood that above-mentioned modem processor can not also be integrated into processor 110.
Mobile terminal 100 can also include the power supply 111 (such as battery) to all parts power supply, it is preferred that power supply 111
Can be logically contiguous by power-supply management system and processor 110, so as to realize management charging by power-supply management system, put
The function such as electricity and power managed.
Although Fig. 1 is not shown, mobile terminal 100 can also will not be repeated here including bluetooth module etc..
For the ease of understanding the embodiment of the present invention, the communications network system being based on below to the mobile terminal of the present invention enters
Row description.
Referring to Fig. 2, Fig. 2 is a kind of communications network system Organization Chart provided in an embodiment of the present invention, the communication network system
Unite includes communicating the user equipment (User of connection successively for the LTE system of universal mobile communications technology, the LTE system
Equipment, UE) 201, evolved UMTS Terrestrial radio access network (Evolved UMTS Terrestrial Radio
Access Network, E-UTRAN) 202, evolved packet-based core networks (Evolved Packet Core, EPC) 203 and operation
The IP operation 204 of business.
Specifically, UE201 can be above-mentioned terminal 100, and here is omitted.
E-UTRAN202 includes eNodeB2021 and other eNodeB2022 etc..Wherein, eNodeB2021 can be by returning
Journey (backhaul) (such as X2 interface) is connected with other eNodeB2022, and eNodeB2021 is connected to EPC203,
ENodeB2021 can provide UE201 to EPC203 access.
EPC203 can include mobility management entity (Mobility Management Entity, MME) 2031, ownership
Client server (Home Subscriber Server, HSS) 2032, other MME2033, gateway (Serving Gate
Way, SGW) 2034, grouped data network gateway (PDN Gate Way, PGW) 2035 and policy and rate functional entity
(Policy and Charging Rules Function, PCRF) 2036 etc..Wherein, MME2031 be processing UE201 and
The control node of signaling between EPC203, there is provided carrying and connection management.HSS2032 is all to manage for providing some registers
Such as the function of attaching position register (not shown) etc, and preserve some and used about service features, data rate etc.
The special information in family.All customer data can be transmitted by SGW2034, and PGW2035 is with can providing UE201 IP
Location is distributed and other functions, and PCRF2036 is strategy and the charging control strategic decision-making of business data flow and IP bearing resources
Point, it selects and provided available strategy and charging control decision-making with charge execution function unit (not shown) for strategy.
IP operation 204 can include internet, Intranet, IP multimedia subsystem (IP Multimedia
Subsystem, IMS) or other IP operations etc..
Although above-mentioned be described by taking LTE system as an example, those skilled in the art it is to be understood that the present invention not only
Suitable for LTE system, be readily applicable to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA with
And following new network system etc., do not limit herein.
Based on above-mentioned mobile terminal hardware configuration and communications network system, each embodiment of the inventive method is proposed.
Embodiment one
The embodiments of the invention provide a kind of method, Fig. 3 is a kind of tune of image saturation provided in an embodiment of the present invention
The schematic flow sheet of adjusting method.As shown in figure 3, mainly include the following steps that：
S301, pending image is transformed into yuv space from rgb space, obtains the first image.
In an embodiment of the present invention, pending image first can be transformed into YUV skies by terminal from original rgb space
Between, the pending image that will transition to yuv space is defined as the first image.
It should be noted that a kind of method of adjustment for image saturation that embodiments of the invention provide is schemed for RGB
As being handled, i.e., the pending image in the embodiment of the present invention is the RGB image in rgb space.
It is understood that in an embodiment of the present invention, the camera device that terminal can be set by itself, which obtains, to be treated
Image is handled, a pending image of conduct, specific pending figure can also be specified in the image of terminal storage by user
The source embodiment of the present invention of picture is not construed as limiting.
Fig. 4 is the schematic diagram that a kind of exemplary terminal provided in an embodiment of the present invention obtains pending image.Such as Fig. 4 institutes
Show, camera device can be provided with terminal, and terminal opens camera device, you can obtain pending image, what terminal obtained treats
Processing image is defaulted as the RGB image of rgb space.Afterwards, pending image is transformed into yuv space by terminal from rgb space.Eventually
The first image for obtaining after the conversion of end, be actually with the display effect of pending image as, be only to record each
The mode of pixel color is different.It should be noted that in an embodiment of the present invention, the pixel in the image of terminal-pair first
The adjustment of saturation degree is carried out, the display effect of image will be changed.
It should be noted that in rgb space, R represents red component, and G represents green component, and B represents blue component, leads to
These three components are crossed to realize the preservation of color of image.In yuv space, Y represents lightness, and U and V represent colourity.
Specifically, in an embodiment of the present invention, pending image is RGB image, terminal can be changed public by space
Pending image is transformed into yuv space by formula from rgb space, so as to obtain the first image, each picture in pending image
Vegetarian refreshments determines that corresponding information, conversion formula are specific as follows in yuv space using conversion formula：
Y=0.299R+0.587G+0.114B (1)
U=0.564 (B-Y) (2)
V=0.713 (R-Y) (3)
It is understood that by above-mentioned formula (1), formula (2) and formula (3) terminal can by pending image from
Rgb space is transformed into yuv space.However, pending image can also be transformed into by terminal according to other manner from rgb space
Yuv space, user can be according to the conversion methods in the demand of itself pre-set image space in terminal.Therefore, if going out in the future
Other methods that RGB image is transformed into yuv space from rgb space are showed, the embodiment of the present invention is equally applicable, i.e., specific figure
The conversion method embodiment of the present invention of image space is not construed as limiting.
S302, obtain brightness value corresponding to each pixel in the first image.
In an embodiment of the present invention, terminal can directly read each of the first image after the first image is obtained
The information of individual pixel, obtain brightness value corresponding to each pixel in the first image.
It is understood that in an embodiment of the present invention, it is YUV image that terminal, which obtains the first image, due to yuv space
In YUV image inherently pixel is preserved according to brightness value and chromatic value.Therefore, terminal can directly be read
The information of each pixel of the first image is taken, obtains brightness value corresponding to each pixel in the first image.
It should be noted that in an embodiment of the present invention, each pixel is in the first image that terminal obtains
What the form according to YUV was preserved, i.e., when pending image is transformed into yuv space from rgb space, terminal has been obtained for
Brightness value corresponding to each pixel in first image.
S303, according to brightness value and default lightness threshold, determine target pixel points from the first image.
In an embodiment of the present invention, terminal is got in the first image after brightness value corresponding to each pixel,
Can according to corresponding to each pixel in the first image brightness value and default lightness threshold, in the first image, determine mesh
Mark pixel.
Specifically, the pixel that brightness value in the first image is more than default lightness threshold by terminal is defined as object pixel
Point, the pixel that brightness value in the first image is less than or equal to default lightness threshold are defined as non-targeted pixel.
It should be noted that in an embodiment of the present invention, terminal can also carry out saturation degree for non-targeted pixel
Adjustment.It is but saturation degree adjustment is not influenceed by pixel illuminance corresponding to non-targeted pixel, i.e., unrelated with illuminance.
It is understood that in an embodiment of the present invention, the target pixel points that terminal determines not are some pixel,
And refer to a kind of pixel, as long as the pixel that brightness value is more than default lightness threshold that is, in the first image is object pixel
Point.
Exemplary, the default lightness threshold in terminal is M, and therefore, brightness value in the first image can be more than M by terminal
Pixel be defined as target pixel points, brightness value in the first image is defined as non-targeted pixel less than or equal to M pixel
Point.For example, brightness value corresponding to a certain pixel is N in the first image, if N is more than M, terminal then determines that the pixel is target
Pixel, if N is less than or equal to M, terminal then determines that the pixel is non-targeted pixel.
Fig. 5 is the schematic diagram that a kind of exemplary terminal provided in an embodiment of the present invention determines target pixel points.Such as Fig. 5 institutes
Show, pixel of the brightness value in the first image more than M is defined as target pixel points by terminal, will be non-targeted picture in the first image
Vegetarian refreshments.Under normal circumstances, target pixel points are often neighbor pixel, and target pixel points can form the part in the first image
Region, as target pixel points constitute region 1, region 2 and region 3 in Fig. 5.
It is understood that in an embodiment of the present invention, brightness value is more than the pixel of default brightness value in the first image
The shallower pixel of point, i.e. target pixel points, actually color.In a practical situation, because the depth of color belongs to phase
For, and under normal circumstances, the brightness value that shade depends primarily on pixel is weighed, brightness value is bigger, and people regard
The color of the pixel is more shallow in feel.Therefore, the embodiment of the present invention determines face in the first image with the brightness value of pixel
The shallower pixel of color.
It should be noted that in an embodiment of the present invention, user can be according to the need of itself display effect to image
To ask and lightness threshold is preset in terminal, default lightness threshold is bigger, and the target pixel points that terminal determines in the first image are fewer,
Default lightness threshold is smaller, and the target pixel points that terminal determines in the first image are more.Specifically preset lightness threshold sheet
Inventive embodiments are not construed as limiting.
It is understood that in the prior art, the adjustment of the saturation degree of image is often by each pixel
Saturation degree carries out the adjustment of same degree, i.e., as the degree that dark and light pixel saturation degree adjusts is.Work as image
Illuminance it is higher when, the effect after image saturation adjustment is fine, when the illuminance of image is relatively low, i.e., the ring shown by image
When border illumination is dark, after light pixel is adjusted according to the saturation degree adjustment mode of dark pixels point, overall shallow of image
The easy distortion of color part.And in an embodiment of the present invention, terminal is by the brightness value of pixel to the pixel in the first image
Point makes a distinction, and determines the shallower target pixel points of color, can be according to the first image when the illuminance of the first image is relatively low
Illuminance target saturation degree corresponding to target pixel points is accurately adjusted, so as to improve image display effect.
S304, obtain illuminance corresponding to target saturation degree corresponding to target pixel points and the first image.
In an embodiment of the present invention, terminal further obtains mesh after target pixel points are determined from the first image
Mark illuminance corresponding to target saturation degree corresponding to pixel and the first image.
It should be noted that in an embodiment of the present invention, terminal can directly read target pixel points in the first image
In target saturation degree corresponding to each pixel, and illuminance corresponding to the first image.Each picture in target pixel points
Illuminance corresponding to target saturation degree corresponding to vegetarian refreshments and the first image is the build-in attribute when generating the first image.
It is understood that in an embodiment of the present invention, illuminance corresponding to the first image is to weigh the first image to show
The light conditions shown.Illuminance corresponding to first image is relatively low, illustrates the first image for the image under half-light environment, the first figure
Illuminance is higher as corresponding to, and it is the image under light environment to illustrate the first image.Specifically, terminal in embodiments of the invention
First judge the photoenvironment that the first image is shown, the adjustment of further object saturation degree is carried out according to photoenvironment.
S305, when illuminance is less than default illumination threshold value, according to illuminance and default saturation degree regulation rule, to target
Saturation degree adjustment is adjusted, and obtains the second image.
In an embodiment of the present invention, terminal is corresponding in target saturation degree and the first image corresponding to acquisition target pixel points
Illuminance after, can further compare the size of illuminance corresponding to the first image and default illumination threshold value, according to comparing knot
Fruit, determine that the method for adjustment of target saturation degree is adjusted to target saturation degree corresponding to each pixel in target pixel points
It is whole, obtain the second image.
It should be noted that in an embodiment of the present invention, user can be according to itself demand to image display effect
Illumination threshold value is preset in terminal, specifically the default illumination threshold value embodiment of the present invention is not construed as limiting.
It is understood that in an embodiment of the present invention, default illumination threshold value is practically used for judging that the first image is
No is the image under half-light environment.When illumination value corresponding to the first image is less than default illumination threshold value, illustrate that the first image is
Image under half-light environment, when illumination value corresponding to the first image is more than or equal to default illumination threshold value, illustrate that the first image is
Image under light environment.
In an embodiment of the present invention, when illuminance corresponding to the first image is less than default illumination threshold value, i.e. the first image
For image under half-light environment when, terminal illuminance and default saturation degree regulation rule according to corresponding to the first image, to target
Target saturation degree is adjusted corresponding to each pixel in pixel, obtains the second image.
Specifically, in an embodiment of the present invention, terminal can according to corresponding to the first image illuminance, and default light
The corresponding relation of illumination range and default adjusted value, target saturation degree corresponding to target pixel points is adjusted, obtains second
Image.
It should be noted that user can preset illuminance scope according to the demand to image display effect in terminal
With the corresponding relation of default adjusted value.Divide different illuminance sections, each illuminance scope is provided with corresponding pre-
If adjusted value, default illuminance scope is more, and the adjustment of target saturation degree is more accurate, and the display effect of the second image is better.
I.e. specifically the default saturation degree regulation rule present invention implements to be not construed as limiting.Terminal judges that illuminance corresponding to the first image is in
After a certain scope in default illuminance scope, it can be preset according to this and adjusted value is preset corresponding to illuminance scope, to target
Target saturation degree is adjusted corresponding to pixel.
Specifically, in an embodiment of the present invention, if illuminance corresponding to the first image is small more than the first default illuminance
Target saturation degree corresponding to target pixel points is adjusted according to the first default adjusted value in equal to the second default illuminance, terminal
It is whole, obtain the second image.If illuminance corresponding to the first image is more than the second default illuminance and is less than or equal to the 3rd default illumination
Degree, target saturation degree corresponding to target pixel points is adjusted according to the second default adjusted value, obtains the second image.If first
Illuminance corresponding to image is more than the 3rd default illuminance and is less than or equal to the 4th default illuminance, according to the 3rd default adjusted value pair
Target saturation degree is adjusted corresponding to target pixel points, obtains the second image.Wherein, it is pre- to be more than second for the first default adjusted value
If adjusted value, the second default adjusted value is more than the 3rd default adjusted value.
Exemplary, illuminance corresponding to the first image is A, and the first default illuminance is A1, and the second default illuminance is
A2, the 3rd default illuminance are A3, and the 4th default illuminance is A4.When A is more than A1 and when being less than or equal to A2, terminal is by target picture
Target saturation degree corresponding to each pixel reduces X1 in vegetarian refreshments.When A is more than A2 and when being less than or equal to A3, terminal is by target picture
Target saturation degree corresponding to each pixel reduces X2 in vegetarian refreshments.When A is more than A3 and when being less than or equal to A4, terminal is by target picture
Target saturation degree corresponding to each pixel reduces X3 in vegetarian refreshments.Wherein, X1 is more than X2, and X2 is more than X3.
Fig. 6 is the schematic diagram that a kind of exemplary terminal provided in an embodiment of the present invention obtains the second image.Such as Fig. 6 institutes
Show, terminal determines that illuminance corresponding to the first image is less than default illumination threshold value, therefore, according to illuminance corresponding to the first image
With default saturation degree regulation rule, it is determined that need to every in the target pixel points in the region 1 in Fig. 5, region 2 and region 3
Target saturation degree corresponding to one pixel reduces U, such as obtains region 4, region 5 and region 6, as shown in Figure 6.
In an embodiment of the present invention, when illuminance corresponding to the first image is more than or equal to default illumination threshold value, i.e., the
When one image is the image under light environment, according to default saturation degree adjusted value, to target saturation degree corresponding to target pixel points
It is adjusted, obtains the 3rd image.
It is understood that in an embodiment of the present invention, terminal also may be used for the non-targeted pixel in the first image
To carry out the adjustment of saturation degree.Specifically, in terminal according to default saturation degree regulation rule to target corresponding to target pixel points
When saturation degree adjusts, non-targeted pixel can be adjusted according to default saturation degree adjusted value.
It should be noted that in an embodiment of the present invention, user can be according to the demand to image display effect at end
Saturation degree adjusted value is preset on end, for when illuminance corresponding to the first image is less than default illumination threshold value, the non-mesh of terminal-pair
Saturation degree corresponding to each pixel in mark pixel is adjusted, or, when illuminance corresponding to the first image is more than
Or during equal to default illumination threshold value, to each pixel in the first image, i.e. target pixel points and non-targeted pixel, its
In saturation degree corresponding to each pixel be adjusted, obtain the 3rd image.That is, when the first image is light environment
Under image when, terminal can be according to default saturation degree adjusted value, according to corresponding to each pixel in non-targeted pixel
The adjustment degree of saturation degree, the tune of same degree is carried out to target saturation degree corresponding to each pixel in target pixel points
It is whole.
Exemplary, illuminance corresponding to the first image is B, and it is B1 to preset illumination threshold value, and default saturation degree adjusted value is
Y, wherein, B is more than B1.Because terminal judges that B is more than B1, i.e. the first image is the image under light environment.Therefore, terminal will
Saturation degree corresponding to each pixel reduces Y in first image, i.e., by mesh corresponding to each pixel in target pixel points
Mark saturation degree is adjusted according to default saturation degree adjusted value Y, obtains the 3rd image.
It should be noted that in an embodiment of the present invention, user can be according to itself demand to image display effect
Saturation degree adjusted value is preset in terminal, i.e., default saturation degree adjusted value is a fixed value.Specifically default saturation degree adjustment
The value embodiment of the present invention is not construed as limiting.
Further, Fig. 7 is a kind of schematic flow sheet of the method for adjustment of image saturation provided in an embodiment of the present invention
Two.As shown in fig. 7, after step S305, a kind of method of adjustment of image saturation provided in an embodiment of the present invention also includes
Step S306.Comprise the following steps that：
S306, the second image is transformed into rgb space from yuv space, obtains target image.
In an embodiment of the present invention, terminal is to light pixel, i.e., target saturation degree is entered corresponding to target pixel points
Row adjustment, after obtaining the second image, can be transformed into rgb space, so as to obtain target image by the second image from yuv space.
That is, the object that terminal performs the method for adjustment of image saturation is the pending image of rgb space, what is finally obtained is
The target image of rgb space, the adjustment of specific image saturation perform in yuv space.
The embodiments of the invention provide a kind of method of adjustment of image saturation, terminal is by pending image from rgb space
Yuv space is transformed into, obtains the first image；Obtain brightness value corresponding to each pixel in the first image；According to brightness value
With default lightness threshold, target pixel points are determined from the first image；Obtain target saturation degree and the corresponding to target pixel points
Illuminance corresponding to one image；When illuminance is less than default illumination threshold value, according to illuminance and default saturation degree regulation rule,
The adjustment of target saturation degree is adjusted, obtains the second image.That is, the tune of the image saturation in the embodiment of the present invention
In adjusting method, terminal can carry out the adjustment of different degrees of saturation degree according to the illuminance of image to different pixels point, improve
The display effect of image.
Embodiment two
Fig. 8 is a kind of structural representation of terminal provided in an embodiment of the present invention.As shown in figure 8, the terminal can include：
Processor 801, memory 802 and communication bus 803；
The communication bus 803, for realizing the connection communication between the processor 801 and the memory 802；
The processor 801, for performing the adjustment programme of the image saturation stored in the memory 802, with reality
Existing following steps：
Pending image is transformed into yuv space from rgb space, obtains the first image；Obtain every in described first image
Brightness value corresponding to one pixel；According to the brightness value and default lightness threshold, target is determined from described first image
Pixel；Obtain illuminance corresponding to target saturation degree corresponding to the target pixel points and described first image；When the light
When illumination is less than default illumination threshold value, according to the illuminance and default saturation degree regulation rule, the target saturation degree is adjusted
It is whole to be adjusted, obtain the second image.
Optionally, the processor 801 is specifically used for the adjustment programme for performing described image saturation degree, to realize following walk
Suddenly：
The pixel that brightness value in described first image is more than to the default lightness threshold is defined as the object pixel
Point；
According to the illuminance, and the corresponding relation of default illuminance scope and default adjusted value, the target is satisfied
It is adjusted with degree, obtains second image；Wherein, if the illuminance is more than the first default illuminance and is less than or equal to second
Default illuminance, the target saturation degree is adjusted according to the first default adjusted value, obtains second image；It is if described
Illuminance is more than the described second default illuminance and is less than or equal to the 3rd default illuminance, according to the second default adjusted value to the mesh
Mark saturation degree is adjusted, and obtains second image；If the illuminance is more than the described 3rd default illuminance and is less than or equal to
4th default illuminance, the target saturation degree is adjusted according to the 3rd default adjusted value, obtains second image；Its
In, the described first default adjusted value is more than the described second default adjusted value, and it is pre- that the described second default adjusted value is more than the described 3rd
If adjusted value.
Optionally, the processor 801, it is additionally operable to described according to the brightness value and default lightness threshold, from described
After determining target pixel points in first image, when the illuminance is more than or equal to the default illumination threshold value, according to pre-
If saturation degree adjusted value, the target saturation degree is adjusted, obtains the 3rd image；
The processor 801, it is additionally operable to described when the illuminance is less than default illumination threshold value, according to the illumination
Degree and default saturation degree regulation rule, target saturation degree adjustment is adjusted, after obtaining the second image, by described the
Two images are transformed into the rgb space from the yuv space, obtain target image.
The embodiments of the invention provide a kind of terminal, pending image is transformed into yuv space by terminal from rgb space, is obtained
Obtain the first image；Obtain brightness value corresponding to each pixel in the first image；According to brightness value and default lightness threshold, from
Target pixel points are determined in first image；Obtain illumination corresponding to target saturation degree corresponding to target pixel points and the first image
Degree；When illuminance is less than default illumination threshold value, according to illuminance and default saturation degree regulation rule, target saturation degree is adjusted
It is adjusted, obtains the second image.That is, terminal provided in an embodiment of the present invention, can be according to the illuminance pair of image
Different pixels point carries out the adjustment of different degrees of saturation degree, improves the display effect of image.
The embodiments of the invention provide a kind of computer-readable recording medium, the computer-readable recording medium storage has
One or more program, one or more of programs can be above-mentioned to realize by one or more computing device
The method of adjustment of image saturation.Computer-readable recording medium can be volatile memory (volatile memory), example
Such as random access memory (Random-Access Memory, RAM)；Or nonvolatile memory (non-volatile
Memory), such as read-only storage (Read-Only Memory, ROM), flash memory (flash memory), hard disk
(Hard Disk Drive, HDD) or solid state hard disc (Solid-State Drive, SSD)；Can also include above-mentioned memory
One of or any combination respective equipment, such as mobile phone, computer, tablet device, personal digital assistant.
It should be noted that herein, term " comprising ", "comprising" or its any other variant are intended to non-row
His property includes, so that process, method, article or device including a series of elements not only include those key elements, and
And also include the other element being not expressly set out, or also include for this process, method, article or device institute inherently
Key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that including this
Other identical element also be present in the process of key element, method, article or device.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on such understanding, technical scheme is substantially done to prior art in other words
Going out the part of contribution can be embodied in the form of software product, and the computer software product is stored in a storage medium
In (such as ROM/RAM, magnetic disc, CD), including some instructions to cause a station terminal (can be mobile phone, computer, service
Device, air conditioner, or network equipment etc.) perform method described in each embodiment of the present invention.
Embodiments of the invention are described above in conjunction with accompanying drawing, but the invention is not limited in above-mentioned specific
Embodiment, above-mentioned embodiment is only schematical, rather than restricted, one of ordinary skill in the art
Under the enlightenment of the present invention, in the case of present inventive concept and scope of the claimed protection is not departed from, it can also make a lot
Form, these are belonged within the protection of the present invention.
Claims (10)
1. a kind of method of adjustment of image saturation, it is characterised in that methods described includes：
Pending image is transformed into yuv space from rgb space, obtains the first image；
Obtain brightness value corresponding to each pixel in described first image；
According to the brightness value and default lightness threshold, target pixel points are determined from described first image；
Obtain illuminance corresponding to target saturation degree corresponding to the target pixel points and described first image；
When the illuminance is less than default illumination threshold value, according to the illuminance and default saturation degree regulation rule, to described
The adjustment of target saturation degree is adjusted, and obtains the second image.
2. according to the method for claim 1, it is characterised in that it is described according to the brightness value and default lightness threshold, from
Target pixel points are determined in described first image, including：
The pixel that brightness value in described first image is more than to the default lightness threshold is defined as the target pixel points.
3. according to the method for claim 1, it is characterised in that it is described according to the brightness value and predetermined luminance threshold value, from
After determining target pixel points in described first image, methods described also includes：
When the illuminance is more than or equal to the default illumination threshold value, according to default saturation degree adjusted value, to the target
Saturation degree is adjusted, and obtains the 3rd image.
4. according to the method for claim 1, it is characterised in that described according to the illuminance and default saturation degree adjustment rule
Then, target saturation degree adjustment is adjusted, obtains the second image, including：
According to the illuminance, and the corresponding relation of default illuminance scope and default adjusted value, to the target saturation degree
It is adjusted, obtains second image.
5. according to the method for claim 4, it is characterised in that described according to the illuminance, and default illuminance model
The corresponding relation of adjusted value is enclosed and preset, the target saturation degree is adjusted, obtains second image, including：
If the illuminance is more than the first default illuminance and is less than or equal to the second default illuminance, according to the first default adjusted value pair
The target saturation degree is adjusted, and obtains second image；
If the illuminance is more than the described second default illuminance and is less than or equal to the 3rd default illuminance, according to the second default adjustment
Value is adjusted to the target saturation degree, obtains second image；
If the illuminance is more than the described 3rd default illuminance and is less than or equal to the 4th default illuminance, according to the 3rd default adjustment
Value is adjusted to the target saturation degree, obtains second image；Wherein, the described first default adjusted value is more than described the
Two default adjusted values, the described second default adjusted value are more than the described 3rd default adjusted value.
6. according to the method for claim 1, it is characterised in that it is described when the illuminance is less than default illumination threshold value,
According to the illuminance and default saturation degree regulation rule, target saturation degree adjustment is adjusted, obtains the second image
Afterwards, methods described also includes：
Second image is transformed into the rgb space from the yuv space, obtains target image.
7. a kind of terminal, it is characterised in that the terminal includes：Processor, memory and communication bus；
The communication bus, for realizing the connection communication between the processor and the memory；
The processor, for performing the adjustment programme of the image saturation stored in the memory, to realize following steps：
Pending image is transformed into yuv space from rgb space, obtains the first image；Obtain each in described first image
Brightness value corresponding to pixel；According to the brightness value and default lightness threshold, object pixel is determined from described first image
Point；Obtain illuminance corresponding to target saturation degree corresponding to the target pixel points and described first image；When the illuminance
During less than default illumination threshold value, according to the illuminance and default saturation degree regulation rule, the target saturation degree is adjusted into
Row adjustment, obtains the second image.
8. terminal according to claim 7, it is characterised in that the processor is specifically used for performing described image saturation degree
Adjustment programme, to realize following steps：
The pixel that brightness value in described first image is more than to the default lightness threshold is defined as the target pixel points；
According to the illuminance, and the corresponding relation of default illuminance scope and default adjusted value, to the target saturation degree
It is adjusted, obtains second image；Wherein, if the illuminance is more than the first default illuminance and preset less than or equal to second
Illuminance, the target saturation degree is adjusted according to the first default adjusted value, obtains second image；If the illumination
Degree is more than the described second default illuminance and is less than or equal to the 3rd default illuminance, and the target is satisfied according to the second default adjusted value
It is adjusted with degree, obtains second image；If the illuminance is more than the described 3rd default illuminance and is less than or equal to the 4th
Default illuminance, the target saturation degree is adjusted according to the 3rd default adjusted value, obtains second image；Wherein,
Described first default adjusted value is more than the described second default adjusted value, and the described second default adjusted value is default more than the described 3rd to be adjusted
Whole value.
9. terminal according to claim 7, it is characterised in that
The processor, it is additionally operable to be determined from described first image according to the brightness value and default lightness threshold described
After target pixel points, when the illuminance is more than or equal to the default illumination threshold value, according to default saturation degree adjusted value,
The target saturation degree is adjusted, obtains the 3rd image；
The processor, it is additionally operable to described when the illuminance is less than default illumination threshold value, according to the illuminance and in advance
If saturation degree regulation rule, target saturation degree adjustment is adjusted, after obtaining the second image, by second image
The rgb space is transformed into from the yuv space, obtains target image.
A kind of 10. computer-readable recording medium, it is characterised in that the computer-readable recording medium storage have one or
Multiple programs, one or more of programs can be by one or more computing devices, to realize that claim 1-6 appoints
Method described in one.
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