CN107852455B - A method and terminal for taking pictures - Google Patents

Abstract

A kind of method and terminal taken pictures, method include: to be calculated to obtain the first time for exposure and the first sensitivity (S101) according to current environment light intensity；It obtains and the longest of terminal at steady state is maintained to keep steady the time (S102) when user takes pictures；Then judge whether longest time that keeps steady is greater than the first time for exposure (S103)；If longest keeps steady, the time was greater than for the first time for exposure, adjusts the time for exposure taken pictures and sensitivity, is taken pictures (S104) using the second time for exposure and the second sensitivity；Wherein, the second time for exposure was not more than for the first time for exposure, and the second sensitivity is not less than the first sensitivity.It can adaptively adjust parameter of taking pictures according to user's individual difference in this way, promote terminal and take pictures effect.

Description

A method and terminal for taking pictures

technical field

The present invention relates to the technical field of terminals, and in particular, to a method and a terminal for taking pictures.

Background technique

With the intelligent development of terminals such as mobile phones and tablets, it can provide great help for people's life, work, study and entertainment. Especially in the aspect of taking pictures, the performance of the terminal is improved rapidly. Compared with the camera, the terminal usually has better portability. Therefore, in most scenarios, users prefer to use the terminal to take pictures. The quality of photos not only depends on the camera performance of the terminal, but also is closely related to the parameters used for taking pictures. For example, exposure time and sensitivity, etc. The exposure time is the time for the shutter to be opened in order to project light onto the photosensitive surface of the photographic photosensitive material. It depends on the sensitivity of the photographic photosensitive material and the illuminance on the photosensitive surface. The shutter is a device used in the camera equipment to control the time when the light hits the photosensitive element. Exposure time is the time interval from when the shutter opens to when it closes. Sensitivity is the speed at which a film reacts chemically to light, and is the standard for speed of light in the film industry. The International Standardization Organization (ISO) quantifies the sensitivity. A lower sensitivity film, ie a film with a lower sensitivity, needs to be exposed for a longer time to achieve the same image as a higher sensitivity film, so it is often referred to as a slow film. Films with higher sensitivity, that is, films with higher sensitivity, are called fast film. Because the film with higher sensitivity usually has coarser film grain or higher image noise, whether it is digital or film photography, in order to reduce the exposure time, the use of higher sensitivity film usually results in more noise in the photo. Many, poor quality.

When the user takes a photo by holding the terminal, the hand is not always stable. Blurred photos will be taken when the hand shakes. In low light scenes, such as in the evening, the exposure time required to take pictures is usually longer than during the day. The longer the time, the greater the influence of hand shake, and the easier it is to take blurry photos. At this time, generally increase the ISO value to reduce the exposure time and avoid blurred photos. But this will reduce the photo quality. In fact, there are differences between individual users, such as the comparison between the elderly, children and middle-aged people, or the comparison between ordinary users and professional photography enthusiasts. If the user sets the same photographing parameters to take a photograph, it is impossible to obtain a photograph of better quality that can be photographed by the current user.

SUMMARY OF THE INVENTION

The technical problem to be solved by the embodiments of the present invention is to provide a method and a terminal for taking pictures. In order to solve the problem that the terminal sets the same photographing parameters for all users to take pictures, the picture quality is poor.

In a first aspect, an embodiment of the present invention provides a method for taking pictures, including:

Calculate the first exposure time and the first sensitivity according to the current ambient light intensity;

Obtain the longest holding time for the user to maintain the terminal in a stable state;

judging whether the longest holding time is greater than the first exposure time;

If the longest holding time is greater than the first exposure time, adjusting the exposure time and sensitivity for taking pictures, and using the second exposure time and the second sensitivity to take pictures;

Wherein, the second exposure time is not greater than the first exposure time, and the second sensitivity is not less than the first sensitivity.

By obtaining the longest holding time that the user maintains the terminal in a stable state, and comparing the longest holding time with the first exposure time calculated by the terminal under the current ambient light intensity, the exposure time for taking pictures is adjusted when the former is greater than the latter. and sensitivity, use a larger second exposure time and a smaller second sensitivity to take pictures. It can fully match the individual characteristics of the current user to adjust the photographing parameters, improve the photographing effect of the terminal, and is compatible with the optical anti-shake function used in the existing terminal, which expands the function and applicability of the terminal and improves the user's photographing experience. It is helpful for different users to take better quality photos that meet their own conditions.

In combination with the first aspect, in a first possible implementation manner of the first aspect, if the longest holding time is less than the first exposure time, the first exposure time and the first sensitivity are used to perform Photograph.

When the longest holding time is less than the first exposure time, the first exposure time and the first sensitivity obtained from the initial calculation of the terminal can be used for calculation, and photos of better quality can be obtained without adjusting the photographing parameters.

With reference to the first aspect, in a second possible implementation manner of the first aspect, the obtaining the longest holding time for the user to maintain the terminal in a stable state includes:

collecting jitter data from the user using the terminal to focus to pressing the shutter;

comparing the jitter data with a preset threshold;

When the jitter data is lower than the preset threshold, the terminal is in a stable state, and the longest holding time of the terminal in a stable state is counted.

By comparing the jitter data with the preset threshold, when the jitter data is lower than the preset threshold, it can be determined that the terminal is in a stable state, and the longest stable time in the stable state can be counted. It reflects the jitter of the terminal, which is conducive to the subsequent adjustment of exposure time and sensitivity, and obtains photos with better quality.

With reference to the first aspect, in a third possible implementation manner of the first aspect, if the longest holding time is greater than the first exposure time, the second exposure time is adjusted to be equal to the longest holding time ;

The second sensitivity is obtained by dividing the product of the first exposure time and the first sensitivity by the longest holding time.

By adjusting the second exposure time to the maximum holding time, and calculating the second sensitivity according to the first exposure time, the first sensitivity, and the maximum holding time, so that the photographing parameters used in the final photograph are most suitable for the current user, the current user can be obtained. A better quality photo that can be taken by the current user in the environment.

In combination with the first aspect, or in combination with any of the first to third possible implementation manners of the first aspect, in a fourth possible implementation manner of the first aspect, when the user takes a picture, the user is prompted to hold the described terminal.

Through the reminder, users who lack professional knowledge of photography can be prompted to keep the terminal in a stable state as much as possible, which is beneficial to obtain an accurate maximum stabilization time and to take clear photos.

With reference to the first aspect, in a fifth possible implementation manner of the first aspect, before acquiring the longest holding time for the user to maintain the terminal in a stable state, the method further includes:

Prompt the user to enter a digital password, gesture password or biometric password for authentication;

After obtaining the longest holding time for the user to maintain the terminal in a stable state, associate and save the longest holding time with the user identity;

When taking a photo next time, after the identity verification is passed, the corresponding longest holding time is called to compare with the first exposure time.

By combining the steps of identity verification, it can meet the needs of multiple users using the terminal to take pictures. For different users, different longest holding times can be obtained and saved for subsequent recall and direct use, which can further improve the applicability of the terminal and the speed of taking pictures. .

In a second aspect, an embodiment of the present invention provides a terminal, including:

a calculation unit, configured to calculate and obtain the first exposure time and the first sensitivity according to the current ambient light intensity;

an obtaining unit, used to obtain the longest holding time for the user to maintain the terminal in a stable state;

a judging unit for judging whether the longest holding time is greater than the first exposure time;

a photographing unit, configured to adjust the exposure time and sensitivity for taking pictures if the longest holding time is greater than the first exposure time, and use the second exposure time and the second sensitivity to take pictures;

Wherein, the second exposure time is not greater than the first exposure time, and the second sensitivity is not less than the first sensitivity.

Based on the same inventive concept, since the principle and beneficial effect of the terminal for solving the problem can refer to the possible implementation manners and the beneficial effects brought by the first aspect and the first aspect, the implementation of the terminal can refer to the implementation of the method, The repetition will not be repeated.

In a third aspect, an embodiment of the present invention provides a terminal, including:

A processor, a memory, a camera, an acceleration sensor, a display screen, an interface circuit and a bus, the processor, memory, camera, acceleration sensor, display screen and interface circuit are connected through the bus and communicate with each other, wherein all the The camera is used for taking pictures, the acceleration sensor is used for sensing the shaking when the user holds the terminal, and the shaking receipt is collected and sent to the processor, the display screen is used for human-computer interaction and displaying the shooting picture, and the memory For storing a set of program codes, the processor is configured to call the program codes stored in the memory to perform the following operations:

The camera senses the ambient light intensity, and calculates the first exposure time and the first sensitivity according to the current ambient light intensity;

Obtain the longest holding time for the user to maintain the terminal in a stable state;

judging whether the longest holding time is greater than the first exposure time;

If the longest holding time is greater than the first exposure time, adjusting the exposure time and sensitivity for taking pictures, and using the second exposure time and the second sensitivity to take pictures;

Wherein, the second exposure time is not greater than the first exposure time, and the second sensitivity is not less than the first sensitivity.

The processor invokes the instructions stored in the memory to implement the solution in the method design of the first aspect. For the implementation manner and beneficial effect of the terminal to solve the problem, reference may be made to the first aspect and the various possibilities of the first aspect. Therefore, the implementation of the terminal can refer to the implementation of the method, and the repeated parts will not be repeated.

In a fourth aspect, an embodiment of the present invention provides a computer storage medium, where the computer storage medium includes a set of program codes for executing the first aspect and the various possibilities of the first aspect and the first aspect according to the embodiment of the present invention The method described in the embodiment of .

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some of the present invention. In the embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

1 is a schematic flowchart of a method for taking pictures provided by the present invention;

2 is a schematic flowchart of another method for taking pictures provided by the present invention;

3 is a schematic flowchart of another method for taking pictures provided by the present invention;

4 is a schematic diagram of the composition of a terminal provided by the present invention;

5 is a schematic diagram of the composition of another terminal provided by the present invention;

FIG. 6 is a schematic diagram of the composition of another terminal provided by the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be understood that, in this embodiment of the present invention, a terminal may be referred to as a user equipment (User Equipment, UE), a mobile station (Mobile Station, MS), a mobile terminal (Mobile Terminal, MT), a computer, a microcomputer, and the like. The terminal may communicate with one or more core networks via a Radio Access Network (RAN), for example, the terminal may be a mobile phone (or "cellular" phone), a computer with a mobile terminal, etc., for example , the terminal may also be a portable, pocket-sized, hand-held, computer-built or vehicle-mounted mobile device that exchanges voice and/or data with the wireless access network. The present invention is not limited to this, for example, the terminal also includes a wired access terminal with multi-bearer characteristics. The terms "first", "second" and "third" in the description and claims of the present invention and the above drawings are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally also includes For other steps or units inherent to these processes, methods, products or devices.

Please refer to FIG. 1 , which is a schematic flowchart of a method for photographing provided by the present invention. In this embodiment, the method includes:

S101: Calculate and obtain a first exposure time and a first sensitivity according to the current ambient light intensity.

Under different ambient light intensities, the exposure time and sensitivity calculated by the terminal are different. For example, in a dark light environment, the exposure time is usually longer and the sensitivity is relatively high, resulting in poor quality photos, while in a better light environment, the exposure time can be shortened, the sensitivity can also be lower, and the quality can be obtained. better photos. Therefore, when the user opens the camera application and wants to take a photo, the terminal can calculate the first exposure time and the first sensitivity suitable for the current ambient light intensity by using a preset algorithm according to the current ambient light intensity. For example, the more common 3A digital imaging technologies are Auto Focus (AF), Auto Exposure (AE) and Auto White Balance (AWB). It uses the AF auto-focus algorithm, AE auto-exposure algorithm and AWB auto-white balance algorithm to maximize the image contrast, improve the over-exposure or under-exposure of the main subject, and compensate for the chromatic aberration of the picture under different lighting conditions, thereby presenting a better image. High-quality image information. The camera using 3A digital imaging technology can well guarantee the accurate color reproduction of the image and present a better photo effect. in. The calculation of exposure time is one of the AE algorithms. Specifically, the corresponding relationship between ambient light intensity, exposure time and sensitivity can be preset in the memory. When the ambient light intensity is obtained, the preset corresponding relationship can be queried to obtain a matching current environment. Exposure time and sensitivity of light intensity.

The exposure time here can also be understood as the shutter time or the number of shutters. In another possible implementation manner, the first exposure time and the first sensitivity may also be set or adjusted by a user who has certain professional knowledge in taking pictures.

S102: Obtain the longest holding time for the user to maintain the terminal in a stable state.

The stable state here refers to a state in which the jitter amplitude of the terminal is maintained within a certain amplitude within a certain period of time when the user holds the terminal. The parameter settings of time and amplitude can be configured by the terminal manufacturer or customized by the user. The longest holding time means that the user can keep the terminal in a stable state for this continuous period of time.

This step can be performed when the user takes a picture. For example, after the user starts the camera application, the terminal starts to obtain the longest holding time; It can receive the user's test start command, start the test, and obtain the longest stable time. Specifically, during testing, multiple tests can be performed to remove outliers and then take the average value. Outliers here refer to data that are significantly larger or smaller relative to most of the test data. Before the test, since the terminal may be used by multiple users, the test user can also be authenticated and recorded. Adjust the camera parameters for the user's data.

S103: Determine whether the longest holding time is greater than the first exposure time. If yes, step S104 is executed.

S104 , adjusting the exposure time and the sensitivity for taking pictures, and using the second exposure time and the second sensitivity to take pictures.

Wherein, the second exposure time is not less than the first exposure time, and the second sensitivity is not greater than the first sensitivity.

That is, if the longest holding time is longer than the first exposure time, it means that the current user can ensure that the terminal is in a stable state for a long time. Therefore, the actual exposure time can be extended relative to the first exposure time calculated initially. At the same time, There is also no need to use the original higher first sensitivity. In this way, for users who can ensure that the terminal is in a stable state for a long time, the photo quality can be improved by adjusting the exposure time and sensitivity. For example, in the current environment, the initially calculated first exposure time, that is, the shutter time, is 250 milliseconds, and the first ISO is 800. However, since the current user's maximum holding time is 500 milliseconds, a second exposure time of 250-500 milliseconds can be used. , while adaptively calculating or matching a second ISO lower than 800 according to the second exposure time.

In another possible implementation manner, if the longest holding time is less than the first exposure time, the first exposure time and the first sensitivity are used to take pictures. The first exposure time and the first sensitivity are calculated by the terminal according to the current ambient light intensity, and meet the photographing requirements in the current environment.

In another possible implementation, when the longest holding time is slightly longer than the first exposure time, for example, the longest holding time is 250.1 milliseconds and the first exposure time is 250 milliseconds, the second The exposure time and the second sensitivity, or, the first exposure time and the first sensitivity can also be directly used to take pictures, where the allowable difference of "slightly greater than" can be limited based on empirical values or simulation results.

It should be noted that, in another possible implementation manner, for the case where the longest holding time is far less than the first exposure time, that is, the current user maintains the terminal in a stable state for a very short time, and in a normal operating state. In general, older and elderly users may have such a situation due to physical reasons. At this time, the exposure time can be further reduced, and the quality of the photos can be sacrificed to improve the clarity of the photos.

In addition, for the optical anti-shake technology that is often used when taking pictures in existing terminals, it mainly detects tiny movements through the gyroscope in the lens, and transmits the signal to the microprocessor to immediately calculate the displacement to be compensated, and then passes The compensation lens group compensates according to the shaking direction and displacement of the lens, so as to effectively overcome the image blur caused by the vibration of the camera. But first of all, it needs to be equipped with optical anti-shake devices, which will increase the cost of cameras and is not fully popular; secondly, optical anti-shake cannot completely solve the problem of anti-shake, and the problem of blurred photos will also occur when the exposure time exceeds a certain length of time. However, the technical solution of the present application does not conflict with the optical anti-shake technology, and the technical solution of the present application can be used in combination with the optical anti-shake technology to improve photo quality.

In this embodiment, the longest holding time for the user to maintain the terminal in a stable state is obtained, and the longest holding time is compared with the first exposure time calculated by the terminal under the current ambient light intensity. The former is greater than the latter. Adjust the exposure time and sensitivity for taking pictures when taking pictures, and use a second exposure time that is larger than the first exposure time and a second sensitivity that is smaller than the calculated first sensitivity to take pictures. It can fully match the individual characteristics of the current user to adjust the photographing parameters, improve the photographing effect of the terminal, and is compatible with the optical anti-shake function used in the existing terminal, which expands the function and applicability of the terminal and improves the user's photographing experience. It is helpful for different users to take better quality photos that meet their own conditions.

Please refer to FIG. 2 , which is a schematic flowchart of another photographing method provided by the present invention. In this embodiment, the method includes:

S201: Calculate and obtain a first exposure time and a first sensitivity according to the current ambient light intensity.

The following steps S202-S204 describe in detail the acquisition of the longest holding time for the user to maintain the terminal in a stable state;

S202: Collect jitter data from when the user uses the terminal to focus to when the shutter is pressed.

Specifically, the jitter data may be the ratio of the jitter amplitude and the time, which may be used to represent the maximum jitter amplitude of the terminal in a unit time. It can also be the angular velocity of the terminal in unit time. The specific size of the unit time may be set by the terminal manufacturer or defined by the user, which is not limited in this embodiment of the present invention. The jitter amplitude can be detected and collected in real time through the acceleration sensor in the terminal. When the user's handheld terminal shakes in any direction in the three-dimensional space within a unit time, resulting in a displacement change of the terminal, the acceleration sensor can detect the displacement change and calculate the offset angle or vibration amplitude of the terminal. Vibration amplitude to characterize the user's shaking amplitude. For example, when the terminal takes a picture, the distance that the terminal moves vertically up and down or back and forth horizontally can be regarded as the vibration amplitude to characterize the user's shaking amplitude, and when the terminal rotates horizontally or vertically, it can be regarded as the offset angle and used to characterize the user's shaking amplitude . Alternatively, the angular velocity of the terminal may also be detected by an acceleration sensor, and the angular velocity of the terminal in a unit time may be used as the shaking data of the user.

When the displacement change detected by the acceleration sensor is 0, the terminal does not have any offset and is in a stable state, but in practical applications, the slight displacement change has little effect on the photographing effect. Small jitter amplitudes can be ignored, and the terminal can still be considered to be in a stable state. For example, the unit time can be set to 50 milliseconds, and the vibration amplitude of the terminal can be collected by the acceleration sensor within 50 milliseconds. When the user holds the terminal to take a photo, if the maximum shaking amplitude of the terminal per unit time is small, the impact on the clarity of the photo is small. If the maximum jitter amplitude is less than 0.5 degrees within 50 milliseconds, it means that the user is holding the terminal steadily in a unit time, and the terminal is in a stable state; if the maximum jitter amplitude of the terminal in a unit time is larger, it will have a greater impact on the clarity of the photo . If the maximum jitter amplitude is greater than 3 degrees within 50 milliseconds, it means that the user does not hold the terminal steadily within a unit time, and the terminal is in an unstable state.

Optionally, jitter data can be collected when the user takes a photo. In order to improve the accuracy, an average value can be obtained after removing abnormal values after collecting multiple times. smaller data. The collection process can also be completed through an independent process, such as configuring the test application, prompting the user to test the jitter data after opening the test application, removing abnormal values after multiple tests and taking the average value, and using the average value as the user's jitter data.

S203. Compare the jitter data with a preset threshold.

The preset threshold here can be set by the terminal manufacturer, for example, can be set to 1.8 degrees/50 milliseconds or other values, and can also be defined by the user. For example, when the preset threshold is set to 1.8 degrees/50 milliseconds, if the maximum jitter amplitude of the terminal collected within 50 milliseconds is 1.6 degrees, then 1.6 degrees/50 milliseconds is less than the preset threshold. The maximum jitter amplitude is 2 degrees, then 2 degrees/50ms is greater than the preset threshold.

S204, when the jitter data is lower than the preset threshold, the terminal is in a stable state, and the longest holding time of the terminal in a stable state is counted.

For example, within the first 50 milliseconds of obtaining the longest holding time, the collected jitter data is 1.6 degrees/50 milliseconds, and the preset threshold is 1.8 degrees/50 milliseconds, which means that within the first 50 milliseconds , the maximum jitter amplitude of the terminal is 1.6 degrees, which is less than 1.8 degrees, and has little impact on the clarity of the photo. Then continue to judge within the second 50 milliseconds. If the second 50 milliseconds is also in a stable state, it means that the continuous 100 milliseconds are all stable time, and the continuous judgment is accumulated until the terminal is in an unstable state within the Nth 50 milliseconds. , N is an integer greater than or equal to 1, and finally the longest holding time of (N-1)*50 milliseconds can be obtained.

S205 judges whether the longest holding time is greater than the first exposure time. If yes, go to step S206, otherwise go to step S207.

S206 , adjusting the exposure time and sensitivity for taking pictures, and using the second exposure time and the second sensitivity to take pictures.

Wherein, the second exposure time is longer than the first exposure time, and the second sensitivity is smaller than the first sensitivity.

S207, using the first exposure time and the first sensitivity to take a picture.

In this embodiment, the method for obtaining the longest holding time is described in detail. By comparing the jitter data with a preset threshold, when the jitter data is lower than the preset threshold, it can be determined that the terminal is in a stable state, and statistics are made that it is in a stable state. The longest holding time is enough, and the statistical results are relatively accurate, which can well reflect the jitter of the terminal, which is conducive to the subsequent adjustment of exposure time and sensitivity, and obtains photos of better quality.

Please refer to FIG. 3 , which is a schematic flowchart of another method for taking pictures provided by the present invention. In this embodiment, the method includes:

S301, when a user takes a picture, prompt the user to hold the terminal steadily.

Through the prompt, users who lack professional knowledge of photography can be prompted to keep the terminal in a stable state as much as possible, which is beneficial to obtain an accurate maximum stabilization time and to take clear photos.

For steps S302-S305, reference may be made to steps S201-S204, which will not be repeated here.

S306: Determine whether the longest holding time is greater than the first exposure time. If yes, go to steps S307-S309, otherwise go to step S310.

S307, adjusting the second exposure time to be equal to the longest holding time.

Since the longest holding time of the current user is greater than the first exposure time, it means that the user can keep the terminal in a stable state within the exposure time calculated by the terminal under the current ambient light intensity. When taking photos with sensitivity, the exposure time needs to be extended, and the optimal exposure time is the longest holding time that the user can keep the terminal in a stable state.

S308, according to the product of the first exposure time and the first sensitivity, and then dividing by the longest holding time to obtain a second sensitivity.

For example, if the first exposure time is 250 milliseconds, the ISO is 800, and the user's maximum holding time is 500 milliseconds, the second sensitivity can be calculated as (250*800)/500=400.

S309, using the second exposure time and the second sensitivity to take a picture.

S310, using the first exposure time and the first sensitivity to take a picture.

In this embodiment, the method of adjusting the exposure time and the sensitivity is specifically described. By adjusting the second exposure time to the maximum holding time, and calculating the second exposure time, the first sensitivity and the maximum holding time Sensitivity, so that the photographing parameters used in the final photograph are most suitable for the current user, and a photograph with better quality that can be taken by the current user in the current environment can be obtained.

Please refer to FIG. 4 , which is a schematic diagram of the composition of a terminal according to an embodiment of the present invention. In this embodiment, the terminal includes:

The computing unit 100 is configured to calculate and obtain the first exposure time and the first sensitivity according to the current ambient light intensity;

an obtaining unit 200, configured to obtain the longest holding time for the user to maintain the terminal in a stable state;

A determination unit 300, configured to determine whether the longest holding time is greater than the first exposure time;

A photographing unit 400, configured to adjust the exposure time and sensitivity for photographing if the longest holding time is greater than the first exposure time, and use the second exposure time and the second sensitivity for photographing;

Wherein, the second exposure time is not greater than the first exposure time, and the second sensitivity is not less than the first sensitivity.

Optionally, if the longest holding time is less than the first exposure time, the photographing unit 400 uses the first exposure time and the first sensitivity to photograph.

Optionally, the obtaining unit 200 is specifically configured to:

collecting jitter data from the user using the terminal to focus to pressing the shutter;

comparing the jitter data with a preset threshold;

When the jitter data is lower than the preset threshold, the terminal is in a stable state, and the longest holding time of the terminal in a stable state is counted.

Optionally, the photographing unit 400 is specifically used for:

If the longest holding time is greater than the first exposure time, adjusting the second exposure time to be equal to the longest holding time;

The second sensitivity is obtained by dividing the product of the first exposure time and the first sensitivity by the longest holding time.

Please refer to FIG. 5 , which is a schematic diagram of the composition of another terminal provided by an embodiment of the present invention. In the embodiment of the present invention, compared with the embodiment shown in FIG. 6 , the terminal further includes:

The prompting unit 500 is configured to prompt the user to hold the terminal steady when the user takes a picture.

It should be noted that the above computing unit 100, acquiring unit 200, determining unit 300 and photographing unit 400 may exist independently, or may be integrated, and in the above terminal embodiment, the computing unit 100, acquiring unit 200, determining unit 300 or photographing unit 400 can be set independently from the processor of the terminal in the form of hardware, and the setting form can be in the form of a microprocessor; it can also be embedded in the processor of the terminal in the form of hardware, and can also be stored in the memory of the terminal in the form of software. , so that the processor of the terminal can call and execute the operations corresponding to the above computing unit 100 , acquiring unit 200 , determining unit 300 and photographing unit 400 .

For example, in the second embodiment of the terminal of the present invention (the embodiment shown in FIG. 5 ), the photographing unit 400 may be the processor of the terminal, and the functions of the computing unit 100 , the obtaining unit 200 and the judging unit 300 may be embedded in The processor can also be set independently of the processor, or can be stored in the memory in the form of software, and can be called by the processor to realize its function. The above processor may be a central processing unit (CPU), a microprocessor, a single-chip microcomputer, or the like.

Please refer to FIG. 6 , which is a schematic diagram of the composition of another terminal provided by an embodiment of the present invention. In the embodiment of the present invention, the terminal includes:

The processor 1101, the memory 1102, the camera 1103, the acceleration sensor 1104, the display screen 1105, the interface circuit 1106 and the bus 1107, the processor 1101, the memory 1102, the camera 1103, the acceleration sensor 1104, the display screen 1105 and the interface circuit 1106 pass through the The bus 1107 is connected and completes mutual communication, wherein the camera 1103 is used for taking pictures, and the acceleration sensor 1104 is used to sense the shaking when the user holds the terminal, and collect the shaking receipt and send it to the processor 1101, The display screen 1105 is used for human-computer interaction and display of shooting images, the memory 1102 is used to store a set of program codes, and the processor 1101 is used to call the program codes stored in the memory 1102 to perform the following operations:

The camera 1103 senses the ambient light intensity, and calculates the first exposure time and the first sensitivity according to the current ambient light intensity;

Obtain the longest holding time for the user to maintain the terminal in a stable state;

judging whether the longest holding time is greater than the first exposure time;

If the longest holding time is greater than the first exposure time, adjusting the exposure time and sensitivity for taking pictures, and using the second exposure time and the second sensitivity to take pictures;

Wherein, the second exposure time is longer than the first exposure time, and the second sensitivity is smaller than the first sensitivity.

Optionally, if the longest holding time is less than the first exposure time, the processor 1101 is further configured to instruct the camera 1103 to use the first exposure time and the first sensitivity to take pictures. .

Optionally, when acquiring the longest holding time for the user to maintain the terminal in a stable state, the processor 1101 is specifically configured to:

Collect, by using the acceleration sensor 1104, the shaking data of the user using the terminal to focus to pressing the shutter;

comparing the jitter data with a preset threshold;

When the jitter data is lower than the preset threshold, the terminal is in a stable state, and the longest holding time of the terminal in a stable state is counted.

Optionally, if the longest holding time is greater than the first exposure time, the processor 1101 is specifically configured to:

adjusting the second exposure time to be equal to the longest holding time;

The second sensitivity is obtained by dividing the product of the first exposure time and the first sensitivity by the longest holding time.

Optionally, when the user takes a picture, the processor 1101 is further configured to prompt the user to hold the terminal steadily through the display screen 1105 .

It should be noted that the processor 1101 here may be a processor, or may be a general term for multiple processing elements. For example, the processor may be a central processing unit (Central Processing Unit, CPU), a specific integrated circuit (Application Specific Integrated Circuit, ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention , for example: one or more microprocessors (digital signal processors, DSP), or, one or more field programmable gate arrays (Field Programmable Gate Array, FPGA).

It should be noted that the memory 1102 may be a storage device, or may be a collective term for multiple storage elements, and may include random access memory (RAM) or non-volatile memory (non-volatile memory), such as disk storage , Flash memory (Flash) and so on. The memory 1102 may mainly include a storage instruction area and a storage data area. The storage instruction area can store the operating system, instructions that can be executed by the processor 1101, etc.; the storage data area can be used to store the acquired longest holding time and the preset threshold compared with the collected jitter data. The bus 1106 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus 1107 can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is used in FIG. 6, but it does not mean that there is only one bus or one type of bus.

It should be noted that, each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. For the same and similar parts of each embodiment, refer to each other. Can. As for the apparatus embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and reference may be made to the partial description of the method embodiment for related parts.

Through the description of the above embodiments, the embodiment of the present invention obtains the longest holding time for the user to maintain the terminal in a stable state, and compares the longest holding time with the first exposure time calculated by the terminal under the current ambient light intensity, When the former is greater than the latter, the exposure time and sensitivity of the photograph are adjusted, and the photograph is performed using a second exposure time greater than the first exposure time and a second sensitivity less than the first sensitivity. It can fully match the individual characteristics of the current user to adjust the photographing parameters, improve the photographing effect of the terminal, and is compatible with the optical anti-shake function used in the existing terminal, which expands the function and applicability of the terminal and improves the user's photographing experience. It is helpful for different users to take better quality photos that meet their own conditions. By comparing the jitter data with the preset threshold, when the jitter data is lower than the preset threshold, it can be determined that the terminal is in a stable state, and the longest stable time in the stable state can be counted. It reflects the jitter of the terminal, which is conducive to the subsequent adjustment of exposure time and sensitivity, and obtains photos with better quality. By adjusting the second exposure time to the maximum holding time, and calculating the second sensitivity according to the first exposure time, the first sensitivity, and the maximum holding time, so that the photographing parameters used in the final photograph are most suitable for the current user, the current user can be obtained. A better quality photo that can be taken by the current user in the environment.

Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by program instructions related to hardware, the aforementioned program can be stored in a computer-readable storage medium, and when the program is executed, execute It includes the steps of the above method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

The method and terminal for taking pictures provided by the embodiments of the present invention are described above in detail. The principles and implementations of the present invention are described in this paper by using specific examples. The descriptions of the above embodiments are only used to help understand the present invention. At the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be construed as Limitations of the present invention.

Claims (16)

1. a method for taking pictures, is characterized in that, comprises: Calculate the first exposure time and the first sensitivity according to the current ambient light intensity; Obtain the longest holding time for the user to maintain the terminal in a stable state; judging whether the longest holding time is greater than the first exposure time; If the longest holding time is greater than the first exposure time, adjusting the exposure time and sensitivity for taking pictures, and using the second exposure time and the second sensitivity to take pictures; Wherein, the second exposure time is not less than the first exposure time, and the second sensitivity is not greater than the first sensitivity. 2 . The method according to claim 1 , wherein if the longest holding time is less than the first exposure time, the first exposure time and the first sensitivity are used to take pictures. 3 . 3. The method according to claim 1, wherein the acquiring the longest holding time for the user to maintain the terminal in a stable state comprises: collecting jitter data from the user using the terminal to focus to pressing the shutter; comparing the jitter data with a preset threshold; When the jitter data is lower than the preset threshold, the terminal is in a stable state, and the longest holding time of the terminal in a stable state is counted. 4. The method of claim 1, wherein If the longest holding time is greater than the first exposure time, adjusting the second exposure time to be equal to the longest holding time; The second sensitivity is obtained by dividing the product of the first exposure time and the first sensitivity by the longest holding time. 5. The method according to any one of claims 1-4, further comprising: When the user takes a picture, the user is prompted to hold the terminal steadily. 6. A terminal, characterized in that, comprising: a calculation unit, configured to calculate and obtain the first exposure time and the first sensitivity according to the current ambient light intensity; an obtaining unit, used to obtain the longest holding time for the user to maintain the terminal in a stable state; a judging unit for judging whether the longest holding time is greater than the first exposure time; a photographing unit, configured to adjust the exposure time and sensitivity for taking pictures if the longest holding time is greater than the first exposure time, and use the second exposure time and the second sensitivity to take pictures; Wherein, the second exposure time is not greater than the first exposure time, and the second sensitivity is not less than the first sensitivity. 7. The terminal according to claim 6, wherein if the longest holding time is less than the first exposure time, the photographing unit uses the first exposure time and the first sensitivity Take a photo. 8. The terminal according to claim 6, wherein the obtaining unit is specifically configured to: collecting jitter data from the user using the terminal to focus to pressing the shutter; comparing the jitter data with a preset threshold; When the jitter data is lower than the preset threshold, the terminal is in a stable state, and the longest holding time of the terminal in a stable state is counted. 9. The terminal according to claim 6, wherein the photographing unit is specifically used for: If the longest holding time is greater than the first exposure time, adjusting the second exposure time to be equal to the longest holding time; The second sensitivity is obtained by dividing the product of the first exposure time and the first sensitivity by the longest holding time. 10. The terminal according to any one of claims 6-9, wherein the terminal further comprises: A prompting unit, configured to prompt the user to hold the terminal steady when the user takes a picture. 11. A terminal, characterized in that, comprising: A processor, a memory, a camera, an acceleration sensor, a display screen, an interface circuit and a bus, the processor, memory, camera, acceleration sensor, display screen and interface circuit are connected through the bus and communicate with each other, wherein all the The camera is used for taking pictures, the acceleration sensor is used for sensing the shaking when the user holds the terminal, and the shaking receipt is collected and sent to the processor, the display screen is used for human-computer interaction and displaying the shooting picture, and the memory For storing a set of program codes, the processor is configured to call the program codes stored in the memory to perform the following operations: The camera senses the ambient light intensity, and calculates the first exposure time and the first sensitivity according to the current ambient light intensity; Obtain the longest holding time for the user to maintain the terminal in a stable state; judging whether the longest holding time is greater than the first exposure time; If the longest holding time is greater than the first exposure time, adjusting the exposure time and sensitivity for taking pictures, and using the second exposure time and the second sensitivity to take pictures; Wherein, the second exposure time is not greater than the first exposure time, and the second sensitivity is not less than the first sensitivity. 12. The terminal according to claim 11, wherein if the longest holding time is less than the first exposure time, the processor is further configured to instruct the camera to use the first exposure time and the first sensitivity to take pictures. 13. The terminal according to claim 11, wherein when acquiring the longest holding time for the user to maintain the terminal in a stable state, the processor is specifically configured to: Collect shaking data from the user using the terminal to focus to pressing the shutter by using the acceleration sensor; comparing the jitter data with a preset threshold; When the jitter data is lower than the preset threshold, the terminal is in a stable state, and the longest holding time of the terminal in a stable state is counted. 14. The terminal according to claim 11, wherein if the longest holding time is longer than the first exposure time, the processor is specifically configured to: adjusting the second exposure time to be equal to the longest holding time; The second sensitivity is obtained by dividing the product of the first exposure time and the first sensitivity by the longest holding time. 15. The terminal according to any one of claims 11-14, wherein, When the user takes a picture, the processor is further configured to prompt the user to hold the terminal steadily through the display screen. 16. A non-transitory computer-readable storage medium storing one or more programs, wherein the one or more programs comprise instructions that, when executed by a processor, cause the processor to execute The following events: Calculate the first exposure time and the first sensitivity according to the current ambient light intensity; Obtain the longest holding time for the user to maintain the terminal in a stable state; judging whether the longest holding time is greater than the first exposure time; If the longest holding time is greater than the first exposure time, adjusting the exposure time and sensitivity for taking pictures, and using the second exposure time and the second sensitivity to take pictures; Wherein, the second exposure time is not less than the first exposure time, and the second sensitivity is not greater than the first sensitivity.