CN115809105A

CN115809105A - Display picture adjusting method, display picture adjusting device and storage medium

Info

Publication number: CN115809105A
Application number: CN202111083533.7A
Authority: CN
Inventors: 吴晓玟; 吴仓志
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2023-03-17

Abstract

The present disclosure relates to a display screen adjusting method, a display screen adjusting apparatus, and a storage medium. The display picture adjusting method comprises the following steps: acquiring ambient light information of a scene where the terminal is located currently, and detecting display content of a current display picture of the terminal; and adjusting the screen brightness and the display color temperature of the current display picture based on the ambient light information, and adjusting the color value of the current display picture based on the display content. The display screen which ensures the comfort of human eyes and has better visual effect can be provided by the terminal through the display screen.

Description

Display picture adjusting method, display picture adjusting device and storage medium

Technical Field

The present disclosure relates to the field of display technologies, and in particular, to a display image adjusting method, a display image adjusting apparatus, and a storage medium.

Background

With the widespread of a large number of terminals carrying display technologies, the time for users to use various display screens is increasing, and the demand for display effect comfort is also increasing. When the difference of brightness and/or color temperature between the environment and the terminal display screen is large, different adaptation processes are required when the human eyes watch the surrounding environment and the terminal display screen. The user frequently switches gaze between the environmental content and the terminal display screen, which easily causes visual fatigue.

In the related art, the method of adjusting the screen brightness and the display color temperature of the terminal to reduce the human eye adaptation frequency and thus reduce fatigue may cause the visual effect of the display picture of the terminal screen to be poor.

Disclosure of Invention

To overcome the problems in the related art, the present disclosure provides a display adjusting method, a display adjusting apparatus, and a storage medium.

According to a first aspect of the embodiments of the present disclosure, there is provided a display screen adjusting method applied to a terminal, including:

acquiring ambient light information of a scene where the terminal is located currently, and detecting display content of a current display picture of the terminal; and adjusting the screen brightness and the display color temperature of the current display picture based on the ambient light information, and adjusting the color value of the current display picture based on the display content.

In one embodiment, adjusting the color value of the current display screen based on the display content includes: and determining a target color value matched with the display content, and adjusting the color value of the current display picture to be the target color value.

In one embodiment, determining a target color value that matches the display content comprises: determining the screen brightness of the terminal adjusted based on the ambient light information; and determining the target color value matched with the adjusted screen brightness and the display content of the current display picture based on the corresponding relation among the screen brightness, the display content and the color value.

In one embodiment, determining a target color value matching the adjusted screen brightness and the display content of the current display frame based on a corresponding relationship between the screen brightness, the display content, and the color value includes: determining a color appearance parameter curve matched with the display content of the current display picture, wherein the color appearance parameter curve represents the corresponding relation between color appearance parameters and screen brightness; and determining a target color appearance parameter corresponding to the adjusted screen brightness according to the adjusted screen brightness and the color appearance parameter curve, and determining a target color value matched with the display content of the current display picture of the terminal based on the target color appearance parameter.

In one embodiment, determining a target color value matched with the display content of the current display frame of the terminal based on the target color appearance parameter includes: calling a first color appearance model matched with the ambient light information, wherein the input of the first color appearance model is a color appearance parameter, and the output is an XYZ color space value; inputting the target color appearance parameters into the color appearance model to obtain a first XYZ color space value matched with the target color appearance parameters; performing inverse color adaptation transformation on the first XYZ color space values, and performing cone response processing on the first XYZ color space values subjected to inverse color adaptation transformation to obtain second XYZ color space values; and converting the second XYZ color space value into an RGB color space to obtain a first RGB color space value matched with the display content of the current display picture of the terminal.

In one embodiment, before determining a target color value matched with display content of a current display frame of the terminal based on the target color appearance parameter, the method further includes: and determining the current color appearance parameter of the current display picture of the terminal, and determining that the current color appearance parameter is different from the target color appearance parameter.

In one embodiment, determining a current color appearance parameter of a current display screen of the terminal includes: determining a second RGB color space value of a current display picture of the terminal, and converting the second RGB color space value into an XYZ color space to obtain a third XYZ color space value; performing cone response processing on the third XYZ color space value, and performing color adaptive transformation on the third XYZ color space value after the cone response processing to obtain a fourth XYZ color space value; calling a second color appearance model matched with the ambient light information, wherein the input of the second color appearance model is an XYZ color space value, and the output of the second color appearance model is a color appearance parameter; and inputting the fourth XYZ color space value into the color appearance model to obtain a current color appearance parameter of a current display picture of the terminal.

According to a second aspect of the embodiments of the present disclosure, there is provided a display screen adjusting apparatus applied to a terminal, including:

the acquisition unit is used for acquiring the ambient light information of the current scene of the terminal; the detection unit is used for detecting the display content of the current display picture of the terminal; and the processing unit is used for adjusting the screen brightness and the display color temperature of the current display picture based on the ambient light information and adjusting the color value of the current display picture based on the display content.

In one embodiment, the processing unit adjusts the color value of the current display screen based on the display content in the following manner: and determining a target color value matched with the display content, and adjusting the color value of the current display picture to be the target color value.

In one embodiment, the processing unit determines the target color value matching the display content by: determining the screen brightness of the terminal after being adjusted based on the ambient light information; and determining the target color value matched with the adjusted screen brightness and the display content of the current display picture based on the corresponding relation among the screen brightness, the display content and the color value.

In one embodiment, the processing unit determines the target color value matching the adjusted screen brightness and the display content of the current display picture based on the correspondence between the screen brightness, the display content, and the color value as follows: determining a color appearance parameter curve matched with the display content of the current display picture, wherein the color appearance parameter curve represents the corresponding relation between the color appearance parameter and the screen brightness; and determining a target color appearance parameter corresponding to the adjusted screen brightness according to the adjusted screen brightness and the color appearance parameter curve, and determining a target color value matched with the display content of the current display picture of the terminal based on the target color appearance parameter.

In one embodiment, the processing unit determines a target color value matched with the display content of the current display frame of the terminal based on the target color appearance parameter in the following manner: calling a first color appearance model matched with the ambient light information, wherein the input of the first color appearance model is a color appearance parameter, and the output is an XYZ color space value; inputting the target color appearance parameters into the color appearance model to obtain a first XYZ color space value matched with the target color appearance parameters; performing inverse color adaptation transformation on the first XYZ color space values, and performing cone response processing on the first XYZ color space values subjected to inverse color adaptation transformation to obtain second XYZ color space values; and converting the second XYZ color space value into an RGB color space to obtain a first RGB color space value matched with the display content of the current display picture of the terminal.

In one embodiment, the processing unit is further configured to: and determining the current color appearance parameter of the current display picture of the terminal, and determining that the current color appearance parameter is different from the target color appearance parameter.

In one embodiment, the processing unit determines the current color appearance parameter of the current display frame of the terminal by: determining a second RGB color space value of a current display picture of the terminal, and converting the second RGB color space value into an XYZ color space to obtain a third XYZ color space value; performing cone response processing on the third XYZ color space value, and performing color adaptive transformation on the third XYZ color space value after the cone response processing to obtain a fourth XYZ color space value; calling a second color appearance model matched with the ambient light information, wherein the input of the second color appearance model is an XYZ color space value, and the output is a color appearance parameter; and inputting the fourth XYZ color space value into the color appearance model to obtain a current color appearance parameter of a current display picture of the terminal.

According to a third aspect of the embodiments of the present disclosure, there is provided a display screen adjustment apparatus including:

a processor; a memory for storing processor-executable instructions;

wherein the processor is configured to: the method for adjusting the display screen according to the first aspect or any one of the embodiments of the first aspect is performed.

According to a fourth aspect of the embodiments of the present disclosure, there is provided a storage medium having instructions stored therein, where the instructions stored in the storage medium, when executed by a processor of a terminal, enable the terminal to perform the display screen adjustment method described in the first aspect or any one of the embodiments of the first aspect.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the method comprises the steps of obtaining ambient light information of a scene where a terminal is located at present, and detecting display content of a current display picture of the terminal. Because the screen brightness and the display color temperature of the current display picture are adjusted through the ambient light information, the adjusted display picture can ensure the comfort of human eyes, and the color value of the current display picture is adjusted through the display content, so that the adjusted display picture has a better visual effect. Therefore, the screen brightness and the display color temperature of the current display picture are adjusted through the ambient light information, and the color value of the current display picture is adjusted through the display content, so that the display picture which can reduce the fatigue of human eyes and has a better visual effect can be obtained, and the method can meet the visual requirements of users.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a flowchart illustrating a display adjustment method according to an exemplary embodiment.

Fig. 2 is a diagram illustrating a brightness adjustment curve according to an exemplary embodiment.

Fig. 3 is a schematic diagram illustrating a color temperature adjustment curve according to an exemplary embodiment.

Fig. 4 is a flowchart illustrating a process of adjusting screen brightness and color temperature according to a brightness adjustment curve and a color temperature adjustment curve according to an exemplary embodiment.

FIG. 5 is a flowchart illustrating a method of determining a target color temperature value in accordance with an exemplary embodiment.

FIG. 6 is a flow chart illustrating another method of determining a target color temperature value in accordance with one exemplary embodiment.

Fig. 7 is a flowchart illustrating a method for determining a target color temperature value from a color appearance parameter according to an exemplary embodiment.

Fig. 8 is a flowchart illustrating yet another method for determining a target color temperature value from a color appearance quantity according to an exemplary embodiment.

Fig. 9 is a flowchart illustrating a method for determining a current color appearance parameter of a current display of a terminal according to an exemplary embodiment.

Fig. 10 is a diagram illustrating a determination of a color appearance parameter curve by display content according to an exemplary embodiment.

Fig. 11 is a block diagram illustrating a display screen adjusting apparatus according to an exemplary embodiment.

Fig. 12 is a block diagram illustrating an apparatus for display adjustment according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure.

In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are a subset of the disclosed embodiments and not all embodiments. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the present disclosure, and should not be construed as limiting the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure. Embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

The display picture adjusting method provided by the embodiment of the disclosure can be applied to a scene for adjusting the display picture of the terminal. For example, the method can be applied to scenes in which the brightness and the display screen of the terminal are adjusted according to the ambient light information. The terminal may include, for example, a notebook computer, a tablet computer, a palmtop computer, an in-vehicle electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, a mobile terminal, or a Personal Digital Assistant (PDA), and the like, and embodiments of the present disclosure are not limited in particular.

In the related art, aiming at the environment which is easy to cause visual fatigue, the display picture of the terminal can be correspondingly adjusted according to the ambient light information, so that the comfort level of human eyes can be ensured for the adjusted display picture. In the related art, the manner of adjusting the display screen of the terminal through the ambient light information usually does not consider the visual effect of the display screen, which often results in the degradation of the visual effect of the display screen.

The embodiment of the disclosure provides a display picture adjusting method, which can adjust the screen brightness of a terminal and the display color temperature of a current display picture of the terminal through the ambient light information of a current scene of the terminal, so as to ensure the comfort of human eyes. And moreover, the color value of the display picture after the color temperature is adjusted can be adjusted according to the display content of the current display picture of the terminal, so that the visual effect of the display picture for ensuring the eye comfort of people is improved.

Fig. 1 is a flowchart illustrating a display adjusting method according to an exemplary embodiment, where the display adjusting method is used in a terminal as shown in fig. 1, and includes the following steps.

In step S11, ambient light information of a scene where the terminal is currently located is acquired, and display content of a current display screen of the terminal is detected.

In step S12, the screen brightness and the display color temperature of the current display screen are adjusted based on the ambient light information, and the color value of the current display screen is adjusted based on the display content.

By the display picture adjusting method provided by the embodiment of the disclosure, the display picture of the terminal can be adjusted to the display picture which gives consideration to the comfort of human eyes and the visual effect, and thus the visual requirement of a user is met.

In an example, the obtained ambient light information may include an ambient illuminance and/or an ambient brightness of a scene where the terminal is currently located, and may further include an ambient color temperature of the scene where the terminal is currently located. In addition, for example, the obtained ambient light information may be obtained by an optical sensor disposed in the terminal, or may be manually input by a user, and the obtaining manner of the ambient light information is not specifically limited in the present disclosure. The ambient brightness represents the ratio of the ambient light intensity observed by the light sensor to the area of the light source seen by the light sensor, and the ambient illumination represents the luminous flux of the scene where the terminal is currently located, which is detected by the light sensor.

Generally, compared with the ambient brightness, the ambient illumination can more accurately represent the ambient light characteristics of the current environment of the terminal. For example, if the accuracy of the light sensor is high, the detected ambient light may be the ambient illuminance and/or the ambient brightness of the environment where the terminal is currently located. If the accuracy of the optical sensor is poor, the detected ambient light may be the ambient brightness of the environment where the terminal is currently located.

In the embodiment of the present disclosure, the adjusting of the screen brightness and the display color temperature of the current display picture according to the ambient light information may be adjusting the screen brightness according to the ambient illuminance and/or the ambient brightness, and adjusting the display color temperature of the current display picture according to the ambient color temperature. For example, the present disclosure describes an implementation process for determining a target screen brightness and a target display color temperature of a terminal according to an ambient brightness and an ambient color temperature of an environment where the terminal is currently located.

Fig. 2 is a schematic diagram illustrating a brightness adjustment curve according to an exemplary embodiment, fig. 3 is a schematic diagram illustrating a color temperature adjustment curve according to an exemplary embodiment, and fig. 4 is a schematic diagram illustrating a flow of adjusting the brightness and the color temperature of a screen according to the brightness adjustment curve and the color temperature adjustment curve according to an exemplary embodiment.

For example, the ambient brightness of the scene where the terminal is currently located and the ambient color temperature of the scene where the terminal is currently located may be detected by the light sensor. And, the current screen brightness of the terminal and the display color temperature of the current display picture of the terminal can be detected. In this case, the target screen brightness matching the ambient brightness may be found in the screen brightness adjustment curve as shown in fig. 2 by the ambient brightness. And moreover, the color temperature adjusting curve matched with the ambient brightness can be searched through the ambient brightness. In an embodiment, the searching for the color temperature adjustment curve matched with the ambient brightness may be comparing the ambient brightness with a preset brightness threshold, and then determining that the ambient brightness matches the "low-brightness" color temperature adjustment curve as shown in fig. 3 when the ambient brightness is smaller than the preset brightness threshold. Likewise, it may be determined that the ambient brightness matches the "highlight" color temperature adjustment curve as shown in fig. 3 in the case where the ambient brightness is greater than the preset brightness threshold. Further, a target display color temperature matched with the ambient color temperature can be searched in the color temperature adjustment curve, and thus a target screen brightness and a target display color temperature for adjusting the terminal are obtained.

Generally, in a high-brightness environment, the adaptation degree of human eyes to colors is high, a target color temperature needs to be closer to an ambient color temperature, in a low-brightness environment, the adaptation degree of human eyes to colors is low, the target color temperature needs to consider the perception difference when the color is not fully adapted, and the color cannot be directly matched with ambient illuminance. Therefore, as shown in fig. 3, the numerical relationship between the ambient color temperature and the display color temperature is substantially uniform for the "highlight" color temperature adjustment curve. For the "low brightness" color temperature adjustment curve, the numerical relationship between the ambient color temperature and the display color temperature is adjusted according to the color adaptability of human eyes, and the numerical relationship between the ambient color temperature and the display color temperature is usually inconsistent. By the color temperature adjusting curve, the display color temperature which is matched with the environmental color temperature and is most suitable for human eyes can be found, so that the current display picture after the color temperature is adjusted can solve the problem of human eye fatigue.

In the embodiment of the present disclosure, in addition to setting the color temperature adjustment curve matching "high brightness" and "low brightness" in a manner of setting the preset brightness threshold, a color temperature adjustment curve matching each brightness interval may also be set in a manner of setting a plurality of different brightness intervals. Of course, it is also possible to set a color temperature adjustment curve matched with each brightness value, and the manner of setting the color temperature adjustment curve is not particularly limited in the present disclosure.

In addition, besides setting color temperature adjustment curves under different ambient brightness, one-to-one correspondence relationship can be directly established between ambient light information and terminal display picture adjustment parameters. For example, the terminal display frame adjustment parameters (i.e., the target screen brightness and the target display color temperature) matched with each set of ambient light information (i.e., each ambient brightness and each ambient color temperature) can be directly set. In this case, if the ambient brightness and the ambient color temperature are determined, the target screen brightness and the target display color temperature that match the ambient brightness and the ambient color temperature can be directly determined. The present disclosure does not specifically limit the manner in which the target screen brightness and the target display color temperature are determined from the ambient light information.

By the display picture adjusting method provided by the embodiment of the disclosure, under the condition that the target screen brightness and the target display color temperature are determined, the current screen brightness of the terminal and the target screen brightness can be compared to obtain a brightness comparison result. And comparing the display color temperature of the current display picture with the target display color temperature to obtain a color temperature comparison result. Further, if the brightness comparison result shows that the brightness is inconsistent, the current screen brightness of the terminal can be adjusted to the target screen brightness. Similarly, if the color temperature comparison result is inconsistent, the current display picture of the terminal can be adjusted to the target display color temperature. On the basis, the display screen self-adaptive display adjustment based on the ambient light is realized by adjusting the screen brightness and the display color temperature of the terminal.

For example, the current display screen of the terminal is adjusted to the target display color temperature, and the weights of the color channels are redistributed according to a three-primary-color (Red Green Blue, RGB) color space value corresponding to a white point of the terminal, so that the display color temperature of the current display screen matches the target display color temperature. For another example, the color value of the overall color distribution of the current display screen of the terminal may also be adjusted through the color appearance model, so that the display color temperature represented by the current display screen of the terminal is matched with the target display color temperature.

In the embodiment of the disclosure, besides adjusting the screen brightness of the terminal and adjusting the display color temperature of the current display picture through the ambient light information, the display content of the current display picture can be detected, and the color value of the current display picture is further adjusted according to the detected display content.

For example, the color value of the current display screen is further adjusted according to the detected display content, which may be determining a target color value matching the display content according to the detected display content, and adjusting the color value of the current display screen of the terminal to the target color value. The display content may include, for example, food, sky, portrait, animal, and text, and the detected display content category is not particularly limited in the present disclosure.

In one embodiment, the display content of the current display screen of the terminal may be determined by performing display content detection on the entire area or a designated area of the current display screen of the terminal through an Artificial Intelligence (AI) content recognition or detection algorithm. In addition, for example, the category of the display content may be stored in a local hardware system of the terminal, or may be stored in other hardware devices or a cloud data center that interact with the terminal, so as to be called when the terminal detects the display content.

In the embodiment of the present disclosure, the detected display content may be one or more than one with respect to the current display screen of the terminal. In one embodiment, when multiple display contents are detected, the detected display contents may be prioritized according to a preset display content priority, and then the display content with the highest priority is determined as the target display content, and the current display screen of the terminal is adjusted to match the target color temperature value of the target display content. Of course, the method and the device for determining the target color value of the terminal can also comprehensively consider the plurality of display contents under the condition that the plurality of display contents are detected, obtain the target color temperature value matched with the plurality of display contents, and then adjust the current display picture of the terminal to the target color value matched with the plurality of display contents.

In one example, the target color temperature value matching the display content may be determined by the adjusted screen brightness of the terminal.

Fig. 5 is a flowchart illustrating a method of determining a target color temperature value, as shown in fig. 5, according to an example embodiment, including the following steps.

In step S21, the screen brightness of the terminal adjusted based on the ambient light information is determined.

In step S22, a target color value matching the adjusted screen brightness and the display content of the current display frame is determined based on the corresponding relationship between the screen brightness, the display content and the color value.

Wherein, the target color value can be understood as the color value that the terminal adjustment color value consulted to the color value of the current display screen of target color value adjustment terminal, the color value of the display screen after the adjustment is the target color value promptly.

For example, in the case of determining the adjusted screen brightness of the terminal and the display content of the current display screen of the terminal, the target color value matched with the adjusted screen brightness and the adjusted display content may be searched according to the corresponding relationship among the screen brightness, the display content, and the color value. The corresponding relation among the screen brightness, the display content and the color values can be understood as the corresponding relation which is predetermined and stored in the corresponding position, and the terminal can directly call the corresponding relation under the condition of determining the screen brightness after the terminal is adjusted and the display content of the current display picture of the terminal.

In an embodiment, the correspondence between the screen brightness, the display content, and the color value may be directly established through a numerical relationship among the three.

For example, for each display content and each screen brightness, a target RGB color space value matched with each display content may be determined, and then, in a case that the screen brightness adjusted by the terminal and the display content of the current display screen of the terminal are determined, the RGB color space value matched with each display content is directly obtained, and the RGB color space value is determined as the target color value.

In another embodiment, the correspondence between the screen brightness, the display content and the color value may be established indirectly by introducing a parameter related to the color value.

For example, a hexagonal pyramid (HSV) color space Value may be determined for each display content and for each screen brightness that matches it. Furthermore, under the condition that the adjusted screen brightness of the terminal and the display content of the current display picture of the terminal are determined, the HSV color space value matched with the adjusted screen brightness and the display content can be obtained, and the obtained HSV color space value is converted into an RGB color space value, so that the target RGB color value is obtained.

For another example, a color appearance parameter matching each display content and each screen brightness may be determined. Further, the target color appearance parameters matched with the adjusted screen brightness of the terminal and the display content of the current display picture of the terminal can be obtained under the condition that the adjusted screen brightness of the terminal and the display content of the current display picture of the terminal are determined. On the basis, the target color value can be obtained by converting the color value of the target color appearance parameter. The color appearance parameter may include one or a combination of hue, lightness, chroma, sharpness and saturation.

Of course, in addition to the above-mentioned manner of determining the target color value through the RGB color space value, HSV color space, or color appearance parameter, the target color value may also be determined in other manners, and the present disclosure does not specifically limit the manner of determining the target color value.

For example, the present disclosure describes an implementation process of adjusting a color value of a current display screen of a terminal according to a color appearance parameter, taking the color appearance parameter as an example.

Fig. 6 is a flowchart illustrating another method of determining a target color temperature value, according to an example embodiment, as shown in fig. 6, including the following steps.

In step S31, a color appearance parameter curve matching the display content of the current display screen is determined.

Wherein, the color appearance parameter curve represents the corresponding relation between the color appearance parameter and the screen brightness.

In the embodiment of the disclosure, a color appearance parameter curve matched with each type of display content is preset. And, the color appearance parameter curve can include one or a combination of hue curve, lightness curve, chroma curve, sharpness curve and saturation curve corresponding to the color appearance parameter.

In step S32, a target color appearance parameter corresponding to the adjusted screen brightness is determined according to the adjusted screen brightness and the color appearance parameter curve, and a target color value matching the display content of the current display frame of the terminal is determined based on the target color appearance parameter.

The display picture adjusting method provided by the embodiment of the disclosure can determine the color appearance parameter curve matched with the display content of the current display picture, and further can search the target color appearance parameter matched with the adjusted screen brightness in the color appearance parameter curve. Furthermore, a target color value matched with the display content of the current display picture of the terminal can be determined through the target color appearance parameter. For example, the target color value matched with the display content of the current display frame of the terminal may be determined through the target color appearance parameter in the following manner.

For convenience of description, the color appearance model for determining the target color value is referred to as a first color appearance model, the XYZ color space value matching the target color appearance parameter is referred to as a first XYZ color space value, the XYZ color space value obtained by performing cone response processing on the first XYZ color space value after inverse color adaptation transform is referred to as a second XYZ color space value, and the RGB color space value representing the target color value is referred to as a first RGB color space value.

Fig. 7 is a flowchart illustrating a method for determining a target color temperature value by using a color appearance parameter according to an exemplary embodiment, as shown in fig. 7, including the following steps.

In step S41, a first color appearance model matching the ambient light information is called.

The input of the first color appearance model is a color appearance parameter, and the output is an XYZ color space value.

Generally, the color appearance model needs to set a corresponding environmental factor and a background factor according to the ambient light information. In an embodiment, the environment factor and the background factor of the first appearance model may be determined according to ambient light information (i.e., ambient illuminance, ambient brightness, and/or ambient color temperature) of a scene where the terminal is currently located, so as to obtain the first appearance model.

In step S42, the target color appearance parameters are input to the color appearance model, resulting in first XYZ color space values matching the target color appearance parameters.

In step S43, the first XYZ color space values are subjected to inverse color adaptation transform, and cone response processing is performed on the inversely color-adapted first XYZ color space values, thereby obtaining second XYZ color space values.

For example, the target screen brightness (i.e., the screen brightness after the terminal adjustment) may be used as the reference screen brightness, and the first XYZ color space values may be obtained by performing inverse color adaptation transform on the first XYZ color space values.

In step S44, the second XYZ color space value is converted into an RGB color space, resulting in a first RGB color space value matching the display content of the current display screen of the terminal.

Through the display frame adjusting method provided by the embodiment of the disclosure, the first RGB color space value capable of representing the target color value can be obtained through the target color appearance parameter.

In the embodiment of the disclosure, before determining the target color value matched with the display content of the current display picture of the terminal through the target color appearance parameter, the current color appearance parameter and the target color appearance parameter of the current display picture can be compared, and then according to the obtained comparison result, whether the target color value needs to be determined through the target color appearance parameter is judged.

In an example, if the comparison result is that the current color appearance parameter is the same as the target color appearance parameter, it may be determined that the target color value is the same as the color value of the current display frame. In this case, it is not necessary to determine the target color value through the target color appearance parameter, and it is also not necessary to further adjust the color value of the current display frame of the terminal.

In another example, if the comparison result is that the current color appearance parameter is different from the target color appearance parameter, it is determined that the target color value is different from the color value of the current display frame. Under this condition, can confirm the target colour value through target look and appearance parameter, and then carry out further adjustment to the colour value of the current display screen of terminal.

Fig. 8 is a flowchart illustrating another method for determining a target color temperature value according to a color appearance parameter according to an exemplary embodiment, and as shown in fig. 8, step S51 in the embodiment of the present disclosure is similar to the execution method of step S31 in fig. 6, and is not repeated herein.

In step S52, a target color appearance parameter corresponding to the adjusted screen brightness is determined according to the adjusted screen brightness and the color appearance parameter curve, and a current color appearance parameter of a current display frame of the terminal is determined.

In step S53a, if it is determined that the current color appearance parameter is different from the target color appearance parameter, a target color value matching the display content of the current display screen of the terminal is determined based on the target color appearance parameter.

In step S53b, if it is determined that the current color appearance parameter is the same as the target color appearance parameter, the color value of the current display frame of the terminal is determined as the target color value.

The display picture adjusting method provided by the embodiment of the disclosure determines that the color value of the current display picture is consistent with the target color value under the condition that the current color appearance parameter of the current display picture is the same as the target color appearance parameter, and under the condition, the color value of the display picture does not need to be further adjusted. And determining that the color value of the current display picture is inconsistent with the target color value according to the condition that the current color appearance parameter of the current display picture is different from the target color appearance parameter, wherein the target color value can be determined through the target color appearance parameter under the condition so as to meet the requirement of the terminal on further adjusting the color value of the display picture.

For example, the present disclosure may determine the current color appearance parameter of the current display screen of the terminal in the following manner. For convenience of description, the color appearance model for determining the current color appearance parameter of the current display screen is referred to as a second color appearance model, the RGB color space value representing the current display screen of the terminal is referred to as a second RGB color space value, the XYZ color space value obtained by converting the second RGB color space value is referred to as a third XYZ color space value, and the XYZ color space value obtained by performing cone response processing and color adaptive conversion on the third XYZ color space value is referred to as a fourth XYZ color space value.

Fig. 9 is a flowchart illustrating a method for determining a current color appearance parameter of a current display of a terminal according to an exemplary embodiment, as shown in fig. 9, including the following steps.

In step S61, the second RGB color space values of the current display screen of the terminal are determined, and the second RGB color space values are converted into the XYZ color space, resulting in third XYZ color space values.

In step S62, the cone response processing is performed on the third XYZ color space values, and the color adaptation transform is performed on the cone response processed third XYZ color space values, resulting in fourth XYZ color space values.

For example, the screen brightness before the adjustment of the terminal may be used as the reference screen brightness, and the color adaptation transformation may be performed on the third XYZ color space value after the cone response processing.

In step S63, a second color appearance model matching the ambient light information is invoked.

The input of the second color appearance model is XYZ color space values, and the output is color appearance parameters.

For example, as with the first appearance model, the environment factor and the background factor of the second appearance model may be determined according to the ambient light information (i.e., the ambient illuminance, the ambient brightness, and/or the ambient color temperature) of the scene where the terminal is currently located, so as to obtain the second appearance model.

In step S64, the fourth XYZ color space value is input to the color appearance model, so as to obtain the current color appearance parameter of the current display screen of the terminal.

The display picture adjusting method provided by the embodiment of the disclosure can determine the target color value by determining the color appearance parameter, and then adjust the terminal screen brightness to the target screen brightness, and adjust the color value of the current display picture of the terminal to the target color value, so as to obtain the display picture which can improve the comfort of human eyes and has a better visual effect.

Fig. 10 is a diagram illustrating a determination of a color appearance parameter curve through display content according to an exemplary embodiment.

In the embodiment of the disclosure, the screen brightness of the terminal can be adjusted through the ambient illumination and/or the ambient brightness, and the display color temperature of the current display picture of the terminal can be adjusted through the ambient color temperature. On the basis, the display content of the current display screen of the terminal can be identified so as to determine the target category to which the display content of the current display screen of the terminal belongs. Further, a color appearance parameter curve corresponding to the target category may be found in a manner as shown in fig. 10. For example, if it is determined that the category to which the display content of the current display screen of the terminal belongs is display content 1, a color appearance parameter curve corresponding to the display content 1 may be selected. For example, a color appearance parameter curve such as a saturation curve, a contrast curve, and/or a sharpness curve corresponding to the display content 1 may be selected.

For example, a second RGB color space value of a current display screen of the terminal may be obtained, and the second RGB color space value is mapped to an XYZ color space to obtain a third XYZ color space value. And the third XYZ color space value can be converted into a cone response coordinate value matched with the first appearance model, and then color adaptation transformation is performed on the cone response coordinate value through the current screen brightness of the terminal, so as to obtain a fourth XYZ color space value after color adaptation. Further, the environmental factor and the background factor of the second color appearance model may be determined by the ambient illuminance, the ambient brightness, and/or the ambient color temperature detected by the light sensor, and the color-adapted fourth XYZ color space value may be input to the second color appearance model. In this case, the color appearance parameter output by the second color appearance model and matched with the fourth XYZ color space value is the current color appearance parameter of the current display frame of the matching terminal.

In one example, a target color appearance parameter matching the target screen brightness, that is, a color appearance parameter used as a reference when the terminal currently displays a picture, may be searched in a color appearance parameter curve corresponding to the target category. Further, the current color appearance parameter and the target color appearance parameter may be compared to determine a comparison result between the current color appearance parameter and the target color appearance parameter.

For example, the target color value may be determined by the target color appearance parameter when the current color appearance parameter of the current display screen is determined to be different from the target color appearance parameter by the comparison result between the current color appearance parameter and the target color appearance parameter. For example, when the environmental factor and the background factor of the first appearance model are determined by the current ambient illumination, ambient brightness and/or ambient color temperature of the terminal, the target appearance parameter is input into the first appearance model, and a color-adapted first XYZ color space value matched with the target appearance parameter is obtained. In this case, the inverse color adaptation transform may be performed on the color-adapted first XYZ color space value according to the target screen brightness of the terminal, to obtain a cone response coordinate value matching the color-adapted XYZ color space value. And converting the cone response coordinate value into an XYZ color space to obtain a second XYZ color space value matched with the target color value, and further converting the second XYZ color space value into an RGB color space to obtain a first RGB color space value capable of representing the target color value.

Furthermore, the RGB color space value of the current display picture of the terminal can be adjusted to be the first RGB color space value, so that the color value of the current display picture of the terminal can be further adjusted.

According to the method and the device, the screen brightness of the terminal can be adjusted through the ambient illumination and/or the ambient brightness, and the display color temperature of the current display picture of the terminal can be adjusted through the ambient color temperature. And the color value of the current display picture of the terminal can be further adjusted through the display content of the current display picture of the terminal, and the method can improve the visual effect of the current display picture of the terminal on the premise of ensuring the comfort of human eyes of the current display picture of the terminal.

Based on the same conception, the embodiment of the disclosure also provides a display picture adjusting device.

It is understood that, in order to implement the above functions, the display screen adjusting apparatus provided in the embodiments of the present disclosure includes a hardware structure and/or a software module corresponding to the execution of each function. The disclosed embodiments can be implemented in hardware or a combination of hardware and computer software, in combination with the exemplary elements and algorithm steps disclosed in the disclosed embodiments. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

Fig. 11 is a block diagram illustrating a display screen adjusting apparatus according to an exemplary embodiment. Referring to fig. 11, the apparatus 100 includes an acquisition unit 101, a detection unit 102, and a processing unit 103.

An obtaining unit 101 is configured to obtain ambient light information of a scene where the terminal is currently located. The detecting unit 102 is configured to detect display content of a current display screen of the terminal. And the processing unit 103 is configured to adjust the screen brightness and the display color temperature of the current display picture based on the ambient light information, and adjust the color value of the current display picture based on the display content.

In one embodiment, the processing unit 103 adjusts the color value of the current display screen based on the display content in the following manner: and determining a target color value of the matched display content, and adjusting the color value of the current display picture to be the target color value.

In one embodiment, the processing unit 103 determines the target color value matching the display content as follows: and determining the screen brightness of the terminal after being adjusted based on the ambient light information. And determining the target color value matched with the adjusted screen brightness and the display content of the current display picture based on the corresponding relation among the screen brightness, the display content and the color value.

In one embodiment, the processing unit 103 determines the target color value matching the adjusted screen brightness and the display content of the current display picture based on the correspondence between the screen brightness, the display content and the color value as follows: and determining a color appearance parameter curve matched with the display content of the current display picture, wherein the color appearance parameter curve represents the corresponding relation between the color appearance parameters and the screen brightness. And determining a target color appearance parameter corresponding to the adjusted screen brightness according to the adjusted screen brightness and the color appearance parameter curve, and determining a target color value matched with the display content of the current display frame of the terminal based on the target color appearance parameter.

In one embodiment, the processing unit 103 determines a target color value matching the display content of the current display frame of the terminal based on the target color appearance parameter in the following manner: and calling a first color appearance model matched with the ambient light information, wherein the input of the first color appearance model is a color appearance parameter, and the output is an XYZ color space value. And inputting the target color appearance parameters into the color appearance model to obtain a first XYZ color space value matched with the target color appearance parameters. And performing color adaptation inverse transformation on the first XYZ color space values, and performing cone response processing on the first XYZ color space values subjected to the color adaptation inverse transformation to obtain second XYZ color space values. And converting the second XYZ color space value into an RGB color space to obtain a first RGB color space value matched with the display content of the current display picture of the terminal.

In one embodiment, the processing unit 103 is further configured to: and determining the current color appearance parameters of the current display picture of the terminal, and determining that the current color appearance parameters are different from the target color appearance parameters.

In one embodiment, the processing unit 103 determines the current color appearance parameter of the current display frame of the terminal by: and determining a second RGB color space value of a current display picture of the terminal, and converting the second RGB color space value into an XYZ color space to obtain a third XYZ color space value. And performing cone response processing on the third XYZ color space value, and performing color adaptive transformation on the third XYZ color space value after the cone response processing to obtain a fourth XYZ color space value. And calling a second color appearance model matched with the ambient light information, wherein the input of the second color appearance model is XYZ color space values, and the output of the second color appearance model is color appearance parameters. And inputting the fourth XYZ color space value into the color appearance model to obtain a current color appearance parameter of a current display picture of the terminal.

With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.

Fig. 12 is a block diagram illustrating an apparatus 200 for display adjustment according to an exemplary embodiment. For example, the apparatus 200 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.

Referring to fig. 12, the apparatus 200 may include one or more of the following components: a processing component 202, a memory 204, a power component 206, a multimedia component 208, an audio component 210, an input/output (I/O) interface 212, a sensor component 214, and a communication component 216.

The processing component 202 generally controls overall operation of the device 200, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 202 may include one or more processors 220 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 202 can include one or more modules that facilitate interaction between the processing component 202 and other components. For example, the processing component 202 can include a multimedia module to facilitate interaction between the multimedia component 208 and the processing component 202.

The memory 204 is configured to store various types of data to support operations at the device 200. Examples of such data include instructions for any application or method operating on the device 200, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 204 may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

Power components 206 provide power to the various components of device 200. Power components 206 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for device 200.

The multimedia component 208 includes a screen that provides an output interface between the device 200 and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 208 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 200 is in an operation mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

The audio component 210 is configured to output and/or input audio signals. For example, audio component 210 includes a Microphone (MIC) configured to receive external audio signals when apparatus 200 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may further be stored in the memory 204 or transmitted via the communication component 216. In some embodiments, audio component 210 also includes a speaker for outputting audio signals.

The I/O interface 212 provides an interface between the processing component 202 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor component 214 includes one or more sensors for providing various aspects of status assessment for the device 200. For example, the sensor component 214 may detect the open/closed status of the device 200, the relative positioning of components, such as a display and keypad of the device 200, the sensor component 214 may also detect a change in the position of the device 200 or a component of the device 200, the presence or absence of user contact with the device 200, the orientation or acceleration/deceleration of the device 200, and a change in the temperature of the device 200. The sensor assembly 214 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 214 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 214 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 216 is configured to facilitate wired or wireless communication between the apparatus 200 and other devices. The device 200 may access a wireless network based on a communication standard, such as WiFi,4G or 5G, or a combination thereof. In an exemplary embodiment, the communication component 216 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 216 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the apparatus 200 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.

In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as memory 204, comprising instructions executable by processor 220 of device 200 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

It is understood that "a plurality" in this disclosure means two or more, and other words are analogous. "and/or" describes the association relationship of the associated object, indicating that there may be three relationships, for example, a and/or B, which may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It will be further understood that the terms "first," "second," and the like, are used to describe various information and should not be limited by these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the terms "first," "second," etc. are used interchangeably throughout. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.

It will be further understood that, unless otherwise specified, "connected" includes direct connections between the two without the presence of other elements, as well as indirect connections between the two with the presence of other elements.

It is further to be understood that while operations are depicted in the drawings in a particular order, this is not to be understood as requiring that such operations be performed in the particular order shown or in serial order, or that all illustrated operations be performed, to achieve desirable results. In certain environments, multitasking and parallel processing may be advantageous.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is to be limited only by the scope of the appended claims.

Claims

1. A display picture adjusting method is applied to a terminal, and comprises the following steps:

acquiring ambient light information of a scene where the terminal is located currently, and detecting display content of a current display picture of the terminal;

and adjusting the screen brightness and the display color temperature of the current display picture based on the ambient light information, and adjusting the color value of the current display picture based on the display content.

2. The method according to claim 1, wherein adjusting the color value of the current display based on the display content comprises:

and determining a target color value matched with the display content, and adjusting the color value of the current display picture to be the target color value.

3. The method according to claim 2, wherein determining the target color value that matches the display content comprises:

determining the screen brightness of the terminal adjusted based on the ambient light information;

and determining the target color value matched with the adjusted screen brightness and the display content of the current display picture based on the corresponding relation among the screen brightness, the display content and the color value.

4. The method according to claim 3, wherein determining the target color value matching the adjusted screen brightness and the display content of the current display based on the correspondence between the screen brightness, the display content, and the color value comprises:

determining a color appearance parameter curve matched with the display content of the current display picture, wherein the color appearance parameter curve represents the corresponding relation between the color appearance parameter and the screen brightness;

and determining a target color appearance parameter corresponding to the adjusted screen brightness according to the adjusted screen brightness and the color appearance parameter curve, and determining a target color value matched with the display content of the current display picture of the terminal based on the target color appearance parameter.

5. The method for adjusting display frames according to claim 4, wherein determining the target color value matched with the display content of the current display frame of the terminal based on the target color appearance parameter comprises:

calling a first color appearance model matched with the ambient light information, wherein the input of the first color appearance model is a color appearance parameter, and the output is an XYZ color space value;

inputting the target color appearance parameters into the color appearance model to obtain a first XYZ color space value matched with the target color appearance parameters;

performing color adaptation inverse transformation on the first XYZ color space value, and performing cone response processing on the first XYZ color space value subjected to color adaptation inverse transformation to obtain a second XYZ color space value;

and converting the second XYZ color space value into an RGB color space to obtain a first RGB color space value matched with the display content of the current display picture of the terminal.

6. The method for adjusting the display screen according to claim 4, wherein before determining the target color value matching the display content of the current display screen of the terminal based on the target color appearance parameter, the method further comprises:

and determining the current color appearance parameter of the current display picture of the terminal, and determining that the current color appearance parameter is different from the target color appearance parameter.

7. The method for adjusting display according to claim 6, wherein determining the current color appearance parameter of the current display of the terminal comprises:

determining a second RGB color space value of a current display picture of the terminal, and converting the second RGB color space value into an XYZ color space to obtain a third XYZ color space value;

performing cone response processing on the third XYZ color space value, and performing color adaptive transformation on the third XYZ color space value after the cone response processing to obtain a fourth XYZ color space value;

calling a second color appearance model matched with the ambient light information, wherein the input of the second color appearance model is an XYZ color space value, and the output of the second color appearance model is a color appearance parameter;

and inputting the fourth XYZ color space value into the color appearance model to obtain a current color appearance parameter of a current display picture of the terminal.

8. A display image adjusting device is applied to a terminal, and comprises:

the acquisition unit is used for acquiring the ambient light information of the current scene of the terminal;

the detection unit is used for detecting the display content of the current display picture of the terminal;

and the processing unit is used for adjusting the screen brightness and the display color temperature of the current display picture based on the ambient light information and adjusting the color value of the current display picture based on the display content.

9. The display adjusting apparatus according to claim 8, wherein the processing unit adjusts the color value of the current display based on the display content in the following manner:

10. The display adjustment apparatus of claim 9, wherein the processing unit determines the target color value matching the display content by:

and determining a target color value matched with the adjusted screen brightness and the display content of the current display picture based on the corresponding relation among the screen brightness, the display content and the color value.

11. The apparatus according to claim 10, wherein the processing unit determines the target color value matching the adjusted screen brightness and the display content of the current display screen based on the correspondence between the screen brightness, the display content and the color value as follows:

determining a color appearance parameter curve matched with the display content of the current display picture, wherein the color appearance parameter curve represents the corresponding relation between color appearance parameters and screen brightness;

12. The display-screen adjusting apparatus according to claim 11, wherein the processing unit determines the target color value matching the display content of the current display screen of the terminal based on the target color appearance parameter in the following manner:

13. The display adjustment apparatus of claim 11, wherein the processing unit is further configured to:

14. The device of claim 13, wherein the processing unit determines the current color appearance parameter of the current display of the terminal by:

performing cone response processing on the third XYZ color space value, and performing color adaptive transformation on the cone response processed third XYZ color space value to obtain a fourth XYZ color space value;

15. A display screen adjustment apparatus, comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to: the display screen adjustment method according to any one of claims 1 to 7 is performed.

16. A storage medium having stored therein instructions that, when executed by a processor of a terminal, enable the terminal to perform the display screen adjustment method of any one of claims 1 to 7.