CN108806621A - A kind of gamut conversion method and device - Google Patents
A kind of gamut conversion method and device Download PDFInfo
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- CN108806621A CN108806621A CN201710301623.6A CN201710301623A CN108806621A CN 108806621 A CN108806621 A CN 108806621A CN 201710301623 A CN201710301623 A CN 201710301623A CN 108806621 A CN108806621 A CN 108806621A
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 162
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000011159 matrix material Substances 0.000 claims description 67
- 239000003086 colorant Substances 0.000 claims description 17
- 238000010606 normalization Methods 0.000 claims description 7
- 229920001621 AMOLED Polymers 0.000 description 17
- 238000010586 diagram Methods 0.000 description 10
- 230000009467 reduction Effects 0.000 description 8
- 230000006870 function Effects 0.000 description 7
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
- G09G5/06—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed using colour palettes, e.g. look-up tables
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
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Abstract
A kind of gamut conversion method of present invention offer and device, method include：Receive color gamut conversion instruction, color gamut conversion instruction includes colour gamut pattern to be converted；The colour gamut pattern transformational relation of display is obtained, the colour gamut pattern transformational relation is corresponding color gamut conversion parameter when display is converted to non-referenced colour gamut pattern from reference gamut pattern, and determines the corresponding color gamut conversion parameter of the colour gamut pattern to be converted；Obtain the signal to be shown of the display；According to the corresponding color gamut conversion parameter of the colour gamut pattern to be converted, the output signal of the signal to be shown is determined.In the embodiment of the present invention, after receiving color gamut conversion instruction, the colour gamut pattern transformational relation of present displays is obtained, and according to transformational relation and signal to be shown, transformed signal is exported, really realizes the color gamut conversion of display screen, and the conversion of plurality of color domain model can be carried out.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a color gamut conversion method and device.
Background
Liquid Crystal Displays (LCDs) and Light Emitting Diode (LED) displays have been widely used in electronic products such as multimedia players, mobile phones, Personal Digital Assistants (PDAs), computer monitors, or flat panel televisions due to their advantages of being light and thin, power saving, and non-radiative. Conventional liquid crystal displays or LED displays are usually combined with light-emitting elements of three primary colors RGB (red, green, and blue) corresponding to light to display colors with high brightness and high chroma.
With the innovation of the light emitting mechanism of the display screen, AMOLED, an OLED display technology, is beginning to be widely used. AMOLED (Active-matrix organic light emitting diode) is a display technology that realizes self-luminescence by using multiple layers of organic compounds, and has the advantages of wide color gamut, high contrast, ultra-lightness and thinness, low power consumption, flexibility, and the like. In terms of color, the AMOLED provides a wider color gamut range, and can restore finer color gradation. However, most of the current market is occupied by LCDs, and in order to meet the needs of customers, a method for reducing the difference of color display between AMOLEDs and LCD screens must be provided.
In the prior art, in the color matching mode of the current LCD display, the basic mode is the display color gamut of sRGB, and the vivid mode mostly adopts a method of changing part of the gray scales Gamma, so as to visually achieve the effect of improving the color saturation. However, the color gamut conversion method essentially adjusts the luminance of part of the gray scales by using fixed parameters to realize color display in different color gamut modes, and neither can perform color gamut conversion in the true sense nor can adjust the color gamut difference existing between each display panel because the parameters of different color gamut transfer functions are fixed.
Disclosure of Invention
The invention provides a color gamut conversion method and a color gamut conversion device, which are used for solving the problems that in the prior art, parameters of different color gamut transfer functions are fixed and cannot be adjusted, and the converted color gray scale cannot be accurately determined due to the difference between display panels in hardware.
The embodiment of the invention provides a color gamut conversion method, which comprises the following steps:
receiving a color gamut conversion instruction, wherein the color gamut conversion instruction comprises a color gamut mode to be converted;
acquiring a color gamut mode conversion relation of a display, wherein the color gamut mode conversion relation is a corresponding color gamut conversion parameter when the display is converted from a reference color gamut mode to a non-reference color gamut mode, and determining the color gamut conversion parameter corresponding to the color gamut mode to be converted;
acquiring a signal to be displayed of the display;
and determining the output signal of the signal to be displayed according to the color gamut conversion parameter corresponding to the color gamut mode to be converted.
In the embodiment of the invention, after receiving a color gamut conversion instruction, the color gamut mode conversion relation of the current display is obtained, and the converted signal is output according to the conversion relation and the signal to be displayed, so that the color gamut conversion of the display screen is really realized, the conversion of various color gamut modes can be carried out, different color gamut conversion parameters can be determined according to different displayed hardware information, and the converted color gray scale can be accurately determined by different displays; and determining different color gamut conversion parameters according to different color gamut modes, and displaying accurate conversion among different color gamuts.
Further, determining the corresponding relationship between the gamut mode to be converted and the gamut conversion parameters according to the following method includes:
determining a tristimulus value component matrix corresponding to the reference color gamut mode of the display according to the reference color gamut mode of the display, wherein the tristimulus value component matrix corresponding to the reference color gamut mode is the tristimulus value component matrix of the three primary colors in the maximum brightness white balance state of the display in the reference color gamut mode;
acquiring a tristimulus value component matrix corresponding to the first color gamut mode; the first color gamut mode is any one of the non-reference color gamut modes, and the tristimulus value component matrix corresponding to the first color gamut mode is a tristimulus value component matrix of the three primary colors of the display in a maximum brightness white balance state in the first color gamut mode;
and determining a color gamut conversion parameter corresponding to the first color gamut mode according to the tristimulus value component matrix corresponding to the reference color gamut mode and the tristimulus value component matrix corresponding to the first color gamut mode, and establishing a corresponding relation between the first color gamut mode and the color gamut conversion parameter.
In the embodiment of the invention, as the tristimulus values of the actual display colors of the pixels under the conversion of the two color gamut modes are equal, the corresponding relation between the color gamut mode to be converted and the color gamut conversion parameters can be determined according to the tristimulus values before and after the conversion.
Further, the determining the color gamut conversion parameter corresponding to the first color gamut mode according to the tristimulus value component matrix corresponding to the reference color gamut mode and the tristimulus value component matrix corresponding to the first color gamut mode includes:
wherein M is a color gamut conversion parameter corresponding to the first color gamut mode,a tristimulus value component matrix corresponding to the reference gamut mode,and the three-stimulus value component matrix is corresponding to the first color gamut mode.
In the embodiment of the invention, the conversion parameters can be determined according to the tristimulus value component matrixes of the actual display colors of the pixels before and after conversion.
Further, the determining the output signal of the signal to be displayed according to the color gamut conversion parameter corresponding to the color gamut mode to be converted includes:
normalizing the input signal to be displayed to obtain a normalized input signal;
and determining an output signal according to the normalized input signal and the color gamut conversion parameter.
Further, after determining the output signal of the signal to be displayed according to the color gamut conversion parameter corresponding to the color gamut mode to be converted, the method further includes:
carrying out inverse normalization processing on the output signal to obtain a gray scale component corresponding to the output signal;
determining a driving voltage according to the gray scale component and the relation between the gray scale component and the driving voltage;
and driving the pixels corresponding to the gray-scale components displayed in the display by using the driving voltage.
In the embodiment of the invention, after the output signal is determined, the output signal is subjected to inverse normalization processing so as to determine the gray scale component corresponding to the output signal, then the driving voltage is determined according to the gray scale component, and then the driving voltage is applied to display the converted pixel.
The present invention also provides a color gamut conversion device comprising:
the device comprises a receiving unit, a processing unit and a display unit, wherein the receiving unit is used for receiving a color gamut conversion instruction, and the color gamut conversion instruction comprises a color gamut mode to be converted;
the display device comprises an acquisition unit, a display unit and a display unit, wherein the acquisition unit is used for acquiring a color gamut mode conversion relation of the display, and the color gamut mode conversion relation is a corresponding color gamut conversion parameter when the display is converted from a reference color gamut mode to a non-reference color gamut mode; acquiring a signal to be displayed of the display;
the determining unit is used for determining a color gamut conversion parameter corresponding to the color gamut mode to be converted according to the color gamut mode conversion relation; and determining the output signal of the signal to be displayed according to the color gamut conversion parameter corresponding to the color gamut mode to be converted.
In the embodiment of the invention, after receiving the color gamut conversion instruction, the color gamut mode conversion relation of the current display is obtained, and the converted signal is output according to the conversion relation and the signal to be displayed, so that the color gamut conversion of the display screen is really realized, and the conversion of various color gamut modes can be carried out.
Further, the determining unit is specifically configured to:
determining a tristimulus value component matrix corresponding to the reference color gamut mode of the display according to the reference color gamut mode of the display, wherein the tristimulus value component matrix corresponding to the reference color gamut mode is the tristimulus value component matrix of the three primary colors in the maximum brightness white balance state of the display in the reference color gamut mode;
acquiring a tristimulus value component matrix corresponding to the first color gamut mode; the first color gamut mode is any one of the non-reference color gamut modes, and the tristimulus value component matrix corresponding to the first color gamut mode is a tristimulus value component matrix of the three primary colors of the display in a maximum brightness white balance state in the first color gamut mode;
and determining a color gamut conversion parameter corresponding to the first color gamut mode according to the tristimulus value component matrix corresponding to the reference color gamut mode and the tristimulus value component matrix corresponding to the first color gamut mode, and establishing a corresponding relation between the first color gamut mode and the color gamut conversion parameter.
Further, the determining unit is specifically configured to:
wherein M is a color gamut conversion parameter corresponding to the first color gamut mode,a tristimulus value component matrix corresponding to the reference gamut mode,and the three-stimulus value component matrix is corresponding to the first color gamut mode.
Further, the determining unit is specifically configured to:
normalizing the input signal to be displayed to obtain a normalized input signal;
and determining an output signal according to the normalized input signal and the color gamut conversion parameter.
Further, the apparatus further comprises:
the display unit is used for carrying out inverse normalization processing on the output signal to obtain a gray scale component corresponding to the output signal;
determining a driving voltage according to the gray scale component and the relation between the gray scale component and the driving voltage;
and driving the pixels corresponding to the gray-scale components displayed in the display by using the driving voltage.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic flowchart of a color gamut conversion method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an embodiment of an (8+ N) bit RGB reduction method provided in the present invention;
fig. 3 is a schematic structural diagram of a color gamut conversion device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention provides a color gamut conversion method, as shown in fig. 1, comprising:
step 101, receiving a color gamut conversion instruction, wherein the color gamut conversion instruction comprises a color gamut mode to be converted;
102, obtaining a color gamut mode conversion relation of a display, wherein the color gamut mode conversion relation is a color gamut conversion parameter corresponding to the display when the display is converted from a reference color gamut mode to a non-reference color gamut mode, and determining the color gamut conversion parameter corresponding to the color gamut mode to be converted;
103, acquiring a signal to be displayed of the display;
and 104, determining an output signal of the signal to be displayed according to the color gamut conversion parameter corresponding to the color gamut mode to be converted.
In step 101, when color gamut conversion is required, a color gamut conversion instruction is received, where the color gamut conversion instruction includes a color gamut mode to be converted, for example, in an embodiment of the present invention, a display is an AMOLED display, and a color gamut to be converted is sRGB or Adobe RGB. The gamut conversion instruction includes sRGB or Adobe RGB.
In step 102, obtaining a conversion relation between a color gamut of a current display and a color gamut mode to be converted, wherein the conversion relation is a corresponding color gamut conversion parameter when the display is converted from a reference color gamut mode to a non-reference color gamut mode;
in the embodiment of the present invention, taking the display as an AMOLED display as an example, the reference color gamut mode of the display is the AMOLED color gamut mode, the non-reference color gamut is the sRGB or Adobe RGB color gamut, and if the color gamut mode to be converted in the color gamut conversion instruction is the sRGB, the conversion relationship of converting the AMOLED color gamut into the sRGB color gamut is obtained.
In step 102, after the color gamut conversion relationship is obtained, the color gamut conversion parameters may be determined, optionally, in an embodiment of the present invention, each conversion relationship corresponds to one color gamut conversion parameter, for example, as shown in table 1, the displayed reference color gamut is the displayed color gamut mode 1, and the non-reference color gamuts are the color gamut mode 2, the color gamut mode 3, and the color gamut mode 4, then the correspondence relationship between the conversion relationship and the conversion parameter is shown in table 1:
table 1: correspondence between conversion relation and conversion parameter
Optionally, in the embodiment of the present invention, the conversion parameter may be determined before the display leaves the factory, and the conversion parameter is placed in the register for calling; alternatively, the conversion parameter may be determined after the display is initialized, or may be determined after the color gamut conversion instruction is received.
Optionally, determining the corresponding relationship between the color gamut mode to be converted and the color gamut conversion parameter according to the following method includes:
determining a tristimulus value component matrix corresponding to the reference color gamut mode of the display according to the reference color gamut mode of the display, wherein the tristimulus value component matrix corresponding to the reference color gamut mode is a tristimulus value component matrix of three primary colors in a maximum brightness white balance state of the display in the reference color gamut mode;
acquiring a tristimulus value component matrix corresponding to the first color gamut mode; the first color gamut mode is any one of the non-reference color gamut modes, and the tristimulus value component matrix corresponding to the first color gamut mode is a tristimulus value component matrix of the three primary colors of the display in a maximum brightness white balance state in the first color gamut mode;
and determining a color gamut conversion parameter corresponding to the first color gamut mode according to the tristimulus value component matrix corresponding to the reference color gamut mode and the tristimulus value component matrix corresponding to the first color gamut mode, and establishing a corresponding relation between the first color gamut mode and the color gamut conversion parameter.
In an embodiment of the invention, the tristimulus values are indicative of the amount of stimulation of the three primary colors causing the human retina to perceive a certain color. In a three color system, the amount of three primary color stimuli required to achieve color matching with the light to be measured. Expressed by X (stimulus amount of red primary color), Y (stimulus amount of green primary color), and Z (stimulus amount of blue primary color).
Since the tristimulus values of the actual display colors of the pixels in the reference color gamut and the color gamut to be converted are equal, the conversion parameters between the reference color gamut and the color gamut to be converted can be determined by the tristimulus values corresponding to the pixels before and after the color gamut conversion.
Optionally, in this embodiment of the present invention, determining the color gamut conversion parameter corresponding to the first color gamut mode according to the tristimulus value component matrix corresponding to the reference color gamut mode and the tristimulus value component matrix corresponding to the first color gamut mode includes:
wherein M is a color gamut conversion parameter corresponding to the first color gamut mode,a tristimulus value component matrix corresponding to the reference gamut mode,the matrix of tristimulus value components corresponding to the first color gamut mode.
For example, in the embodiment of the present invention, for the tristimulus values (X1, Y1, Z1) of the display color corresponding to any one signal in the reference color gamut, the tristimulus values of the display color corresponding to the signal to be output in the converted color gamut mode are (X2, Y2, Z2), and then
Wherein, being the tristimulus value component matrix of the reference color gamut,is the result normalized for the pixel signals (R1, G1, B1) in the reference color gamut; for the tristimulus value component matrix of the gamut to be converted,the result of the color gamut to be converted is normalized to the pixel signals (R2, G2, B2).
Namely, it isThat is, the conversion parameter M is:
optionally, in an embodiment of the present invention,the determination may be made by attribute information of the display screen, for example, after the basic color of the display is collected by the CA310, the tristimulus value component matrix of the display may be determined.
In the embodiment of the present invention, the tristimulus value component corresponding to the non-reference color gamut may be pre-stored in a register unit of the display, so as to be called when determining the conversion parameter.
Optionally, in the embodiment of the present invention, since the conversion parameter is determined according to the attribute information of the display screen, although the hardware information of the display screen is different, different conversion parameters may be determined according to different hardware information, and after color gamut conversion is performed on different display screens, the problem of color gamut drift in the process of manufacturing the display screens may be solved, and the converted color may be accurately determined, so as to eliminate difference.
In step 103, a signal to be displayed is obtained, which requires color gamut conversion.
Optionally, in the embodiment of the present invention, step 104 may be before step 101 or after step 103.
In step 104, after the color gamut conversion coefficient and the signal to be displayed are obtained, the color gamut conversion coefficient and the signal to be displayed may be obtainedAn output signal output by the display is determined. For example, in the embodiment of the present invention, the tristimulus value matrix of the displayed color of the pixel signal to be displayed is (R, G, B)INAnd the conversion coefficient is M, the output pixel signal displays the tristimulus value matrix (R, G, B) of the colorOUTComprises the following steps:
optionally, in the embodiment of the present invention, determining the output signal of the signal to be displayed according to the color gamut conversion parameter corresponding to the color gamut mode to be converted includes:
normalizing the input signal to be displayed to obtain a normalized input signal;
and determining an output signal according to the normalized input signal and the color gamut conversion parameter.
For example, in the embodiment of the present invention, the signal to be displayed is (R, G, B), and then the normalized display signal is:
after step 104, the method further comprises:
carrying out inverse normalization processing on the output signal to obtain a gray scale component corresponding to the output signal; determining a driving voltage according to the gray scale component and the relation between the gray scale component and the driving voltage; and driving the pixels corresponding to the gray-scale components displayed in the display by using the driving voltage.
In the embodiment of the invention, after the output signal is determined, 8bit reduction is carried out on the output signal so as to determine the gray scale component corresponding to the output signal; and since the gray-scale component is driven by the voltage, after the gray-scale component is determined, the driving voltage corresponding to the gray-scale component can be determined according to the corresponding relation between the driving voltage and the gray-scale component, and the display can be driven by the driving voltage.
Optionally, in the embodiment of the present invention, if the decimal is obtained after 8-bit reduction of the output signal, and the decimal has no corresponding gray scale component, the driving voltage corresponding to the decimal gray scale is interpolated in the IC, that is, the data is expanded to (8+ N) bits, and the size of N is set according to the Source voltage precision.
Example (c): as shown in FIG. 2, if the IC is selectable, a certain reduction Gray level is between A and A +1Gray when 8 bits are available, but the certain reduction Gray level is changed into 2A +1Gray level when (8+1) bits are reduced, compared with the rounding of 8 bits, the Source voltage can be controlled more finely, so that the display color precision is higher.
Optionally, in the embodiment of the present invention, if the decimal obtained after 8-bit reduction of the output signal does not have a corresponding gray-scale component, the result after 8-bit reduction is rounded, so as to determine the driving voltage corresponding to the rounded result.
Optionally, in the embodiment of the present invention, the reference color gamut of the display is a color gamut with a large range, and the non-reference color gamut is a color gamut with a small color gamut, for example, the reference color gamut of the display is an AMOLED color gamut, and the non-reference color gamut may be sRGB or Adobe RGB, that is, a signal to be output in the AMOLED display may be converted from the AMOLED color gamut to the sRGB or Adobe RGB color gamut.
For another example, if the reference color gamut of the display is Adobe RGB, the non-reference color gamut may be sRGB, but not AMOLED, because the light-emitting mechanism of the display cannot fully display the converted colors of the AMOLED color gamut
Optionally, in the embodiment of the present invention, when the instruction to stop color gamut conversion is received, the signal to be displayed is directly output, and color gamut conversion is not performed any more.
To facilitate understanding of those skilled in the art, the present invention provides a color gamut conversion method, in which signals to be displayed are (R, G, B), and the color gamut conversion method is described in the embodiment of the present inventionThe converted output signal is (R)1,G1,B1) The display is an AMOLED display, namely the reference color gamut is an AMOLED color gamut, and after receiving the color gamut conversion instruction, the color gamut mode to be converted in the color gamut conversion instruction is determined to be an sRGB color gamut; and determines the corresponding relationship of AMOLED color gamut, sRGB color gamut and conversion parameter M, wherein,
firstly, normalizing the signal to be displayed, wherein the normalized signal to be displayed is (r, g, b)inWherein
the output signal after gamut conversion is:
then 8bit reduction is carried out on the output signal, and the reduced (R)1,G1,B1) Is composed of
Where (s, t, u) is the GAMMA transform parameter and f (A) is defined as the function operation that rounds A.
Then according to (R)1,G1,B1) The corresponding driving voltage is determined and then displayed at the driving voltage.
Based on the same concept, an embodiment of the present invention further provides a color gamut conversion device, as shown in fig. 3, including:
a receiving unit 301, configured to receive a color gamut conversion instruction, where the color gamut conversion instruction includes a color gamut mode to be converted;
an obtaining unit 302, configured to obtain a color gamut mode conversion relationship of the display, where the color gamut mode conversion relationship is a color gamut conversion parameter corresponding to when the display is converted from a reference color gamut mode to a non-reference color gamut mode; acquiring a signal to be displayed of the display;
a determining unit 303, configured to determine, according to the color gamut mode conversion relationship, a color gamut conversion parameter corresponding to the color gamut mode to be converted; and determining the output signal of the signal to be displayed according to the color gamut conversion parameter corresponding to the color gamut mode to be converted.
Further, the determining unit 303 is specifically configured to:
determining a tristimulus value component matrix corresponding to the reference color gamut mode of the display according to the reference color gamut mode of the display;
acquiring a tristimulus value component matrix corresponding to the first color gamut mode; wherein the first gamut mode is any one of the non-reference gamut modes;
and determining a color gamut conversion parameter corresponding to the first color gamut mode according to the tristimulus value component matrix corresponding to the reference color gamut mode and the tristimulus value component matrix corresponding to the first color gamut mode, and establishing a corresponding relation between the first color gamut mode and the color gamut conversion parameter.
Further, the determining unit 303 is specifically configured to:
wherein M is a color gamut conversion parameter corresponding to the first color gamut mode,a tristimulus value component matrix corresponding to the reference gamut mode,and the three-stimulus value component matrix is corresponding to the first color gamut mode.
Further, the determining unit 303 is specifically configured to:
normalizing the input signal to be displayed to obtain a normalized input signal;
and determining an output signal according to the normalized input signal and the color gamut conversion parameter.
Further, the apparatus further comprises:
the display unit 304 is configured to perform inverse normalization processing on the output signal to obtain a gray scale component corresponding to the output signal;
determining a driving voltage according to the gray scale component and the relation between the gray scale component and the driving voltage;
and driving the pixels corresponding to the gray-scale components displayed in the display by using the driving voltage.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A method of color gamut conversion, the method comprising:
receiving a color gamut conversion instruction, wherein the color gamut conversion instruction comprises a color gamut mode to be converted;
acquiring a color gamut mode conversion relation of a display, wherein the color gamut mode conversion relation is a corresponding color gamut conversion parameter when the display is converted from a reference color gamut mode to a non-reference color gamut mode, and determining the color gamut conversion parameter corresponding to the color gamut mode to be converted;
acquiring a signal to be displayed of the display;
and determining the output signal of the signal to be displayed according to the color gamut conversion parameter corresponding to the color gamut mode to be converted.
2. The method according to claim 1, wherein determining the correspondence between the gamut mode to be converted and the gamut conversion parameters comprises:
determining a tristimulus value component matrix corresponding to the reference color gamut mode of the display according to the reference color gamut mode of the display, wherein the tristimulus value component matrix corresponding to the reference color gamut mode is the tristimulus value component matrix of the three primary colors in the maximum brightness white balance state of the display in the reference color gamut mode;
acquiring a tristimulus value component matrix corresponding to the first color gamut mode; the first color gamut mode is any one of the non-reference color gamut modes, and the tristimulus value component matrix corresponding to the first color gamut mode is a tristimulus value component matrix of the three primary colors of the display in a maximum brightness white balance state in the first color gamut mode;
and determining a color gamut conversion parameter corresponding to the first color gamut mode according to the tristimulus value component matrix corresponding to the reference color gamut mode and the tristimulus value component matrix corresponding to the first color gamut mode, and establishing a corresponding relation between the first color gamut mode and the color gamut conversion parameter.
3. The method according to claim 2, wherein the determining the gamut conversion parameters corresponding to the first gamut mode according to the tristimulus-value component matrix corresponding to the reference gamut mode and the tristimulus-value component matrix corresponding to the first gamut mode comprises:
wherein M is a color gamut conversion parameter corresponding to the first color gamut mode,a tristimulus value component matrix corresponding to the reference gamut mode,and the three-stimulus value component matrix is corresponding to the first color gamut mode.
4. The method according to claim 1, wherein the determining the output signal of the signal to be displayed according to the color gamut conversion parameter corresponding to the color gamut mode to be converted comprises:
normalizing the input signal to be displayed to obtain a normalized input signal;
and determining an output signal according to the normalized input signal and the color gamut conversion parameter.
5. The method according to claim 4, wherein after determining the output signal of the signal to be displayed according to the color gamut conversion parameter corresponding to the color gamut mode to be converted, the method further comprises:
carrying out inverse normalization processing on the output signal to obtain a gray scale component corresponding to the output signal;
determining a driving voltage according to the gray scale component and the relation between the gray scale component and the driving voltage;
and driving the pixels corresponding to the gray-scale components displayed in the display by using the driving voltage.
6. A color gamut conversion device characterized by comprising:
the device comprises a receiving unit, a processing unit and a display unit, wherein the receiving unit is used for receiving a color gamut conversion instruction, and the color gamut conversion instruction comprises a color gamut mode to be converted;
the display device comprises an acquisition unit, a display unit and a display unit, wherein the acquisition unit is used for acquiring a color gamut mode conversion relation of the display, and the color gamut mode conversion relation is a corresponding color gamut conversion parameter when the display is converted from a reference color gamut mode to a non-reference color gamut mode; acquiring a signal to be displayed of the display;
the determining unit is used for determining a color gamut conversion parameter corresponding to the color gamut mode to be converted according to the color gamut mode conversion relation; and determining the output signal of the signal to be displayed according to the color gamut conversion parameter corresponding to the color gamut mode to be converted.
7. The apparatus according to claim 6, wherein the determining unit is specifically configured to:
determining a tristimulus value component matrix corresponding to the reference color gamut mode of the display according to the reference color gamut mode of the display, wherein the tristimulus value component matrix corresponding to the reference color gamut mode is the tristimulus value component matrix of the three primary colors in the maximum brightness white balance state of the display in the reference color gamut mode;
acquiring a tristimulus value component matrix corresponding to the first color gamut mode; the first color gamut mode is any one of the non-reference color gamut modes, and the tristimulus value component matrix corresponding to the first color gamut mode is a tristimulus value component matrix of the three primary colors of the display in a maximum brightness white balance state in the first color gamut mode;
and determining a color gamut conversion parameter corresponding to the first color gamut mode according to the tristimulus value component matrix corresponding to the reference color gamut mode and the tristimulus value component matrix corresponding to the first color gamut mode, and establishing a corresponding relation between the first color gamut mode and the color gamut conversion parameter.
8. The apparatus according to claim 7, wherein the determining unit is specifically configured to:
wherein M is a color gamut conversion parameter corresponding to the first color gamut mode,a tristimulus value component matrix corresponding to the reference gamut mode,and the three-stimulus value component matrix is corresponding to the first color gamut mode.
9. The apparatus according to claim 6, wherein the determining unit is specifically configured to:
normalizing the input signal to be displayed to obtain a normalized input signal;
and determining an output signal according to the normalized input signal and the color gamut conversion parameter.
10. The apparatus of claim 9, further comprising:
the display unit is used for carrying out inverse normalization processing on the output signal to obtain a gray scale component corresponding to the output signal;
determining a driving voltage according to the gray scale component and the relation between the gray scale component and the driving voltage;
and driving the pixels corresponding to the gray-scale components displayed in the display by using the driving voltage.
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