CN-121982994-A - Image adjustment method and device, intelligent television and storage medium

CN121982994ACN 121982994 ACN121982994 ACN 121982994ACN-121982994-A

Abstract

The application relates to an image adjustment method, an image adjustment device, electronic equipment and a storage medium, wherein the method comprises the steps of obtaining backlight partition information of an image to be displayed; the method comprises the steps of determining the significant characteristic parameters of each backlight partition based on backlight partition information, redistributing the total backlight power of display equipment according to the significant characteristic parameters of each backlight partition to obtain target backlight values of each backlight partition, regulating and controlling the luminous brightness of the corresponding backlight partition through a backlight module of the display equipment according to the target backlight values of each backlight partition, and finishing the display output of an image to be displayed. By combining the original backlight value significance degree to compress the original backlight value, a part of power is saved and then redistributed according to the significance degree, so that the backlight of a low significance area is reduced and the backlight of a high significance area is improved on the premise that the total power is kept unchanged, intelligent redistribution and dynamic regulation of the total power of the backlight are realized, and the image display effect and energy efficiency are effectively improved.

Inventors

WU XIAOXIA
ZHU SHANTING

Assignees

深圳创维显示科技有限公司

Dates

Publication Date: 20260505
Application Date: 20251219

Claims (10)

1. An image adjustment method, comprising: acquiring backlight partition information of an image to be displayed, wherein the image to be displayed comprises a plurality of backlight partitions, and the backlight partition information comprises initial backlight values of the backlight partitions; determining a salient feature parameter of each backlight partition based on the backlight partition information; according to the significant characteristic parameters of each backlight partition, the total backlight power of the display equipment is redistributed to obtain target backlight values of the backlight partitions; and according to the target backlight value of each backlight partition, regulating and controlling the luminous brightness of the corresponding backlight partition through a backlight module of the display equipment, and finishing the display output of the image to be displayed.
2. The method of claim 1, wherein the determining salient feature parameters for each backlight partition based on the backlight partition information comprises: Based on the backlight partition information, determining an initial backlight value of each backlight partition and an initial backlight value of a peripheral backlight partition corresponding to each backlight partition, wherein the peripheral backlight partition refers to all other backlight partitions in a preset radius partition matrix taking the current backlight partition as a center; for any backlight partition, determining a peripheral brightness average value of the backlight partition according to initial backlight values of all peripheral backlight partitions corresponding to the backlight partition; Determining difference characteristics of initial backlight values of all backlight partitions in the image to be displayed, and constructing a significance calculation model based on the difference characteristics; and inputting the initial backlight value and the peripheral brightness average value of each backlight partition into the significance calculation model to obtain the significance characteristic parameter of each backlight partition.
3. The method according to claim 2, wherein inputting the initial backlight value and the average value of the peripheral brightness of each backlight partition into the saliency calculation model to obtain the saliency feature parameter of each backlight partition comprises: inputting the initial backlight value and the peripheral brightness average value of each backlight partition into the saliency calculation model so that the saliency calculation model quantifies the visual saliency degree of each backlight partition and obtains the initial saliency parameter of each backlight partition; Taking the largest initial significant parameter in the initial significant parameters of all backlight partitions as a reference parameter; And carrying out ratio operation on the initial significant parameter of each backlight partition and the reference parameter to obtain normalized significant parameters serving as significant characteristic parameters of each backlight partition.
4. The method according to claim 1, wherein the redistributing the total backlight power of the display device according to the salient feature parameter of each backlight partition to obtain the target backlight value of each backlight partition comprises: Performing differential compression processing on the initial backlight value of each backlight partition to obtain a compressed backlight value of each backlight partition; Calculating the sum of the differences between the initial backlight values of all the backlight partitions and the corresponding compressed backlight values to obtain total saved power; Counting the sum of the significant characteristic parameters of all backlight partitions, and determining the power distribution weight of each backlight partition according to the ratio of the significant characteristic parameter of each backlight partition to the sum of the significant characteristic parameters; distributing the total saved power to each backlight partition according to the power distribution weight of each backlight partition to obtain the power distribution increment of each backlight partition; and determining the target backlight value of each backlight partition according to the power distribution increment of each backlight partition.
5. The method of claim 4, wherein determining the target backlight value for each backlight partition based on the power allocation increment for each backlight partition comprises: Determining preset backlight values of the backlight partitions according to the power distribution increment of the backlight partitions; judging whether preset backlight values of all backlight partitions are in a preset backlight limiting interval or not; Under the condition that the preset backlight values are in the preset backlight limiting interval, determining the preset backlight value of each backlight partition as the target backlight value of each backlight partition; and executing the limiting operation under the condition that the preset backlight value exceeding the preset backlight limiting interval exists, and re-executing the step of judging whether the preset backlight value of each backlight partition is within the preset backlight limiting interval or not for the preset backlight value of each backlight partition after the limiting operation.
6. The method of claim 5, wherein the clipping operation comprises: Identifying out-of-limit preset backlight values exceeding a preset backlight limiting interval in all backlight partitions; Performing power cutting processing on the overrun backlight subareas corresponding to the overrun preset backlight values, and updating the preset backlight values of all the overrun backlight subareas so as to correct the preset backlight values into the preset backlight limiting intervals; Determining the total cut power generated by performing power cutting processing on all the overrun backlight partitions; Determining secondary power allocation weights of non-overrun backlight partitions based on the significant characteristic parameter duty cycle of each backlight partition; Correspondingly distributing the total reduced power to each non-overrun backlight partition according to the secondary power distribution weight to obtain a secondary power distribution increment of each non-overrun backlight partition; and updating the preset backlight value of each non-overrun backlight partition according to the secondary power distribution increment of each non-overrun backlight partition.
7. The method of claim 5, wherein the clipping operation further comprises: adjusting the compression parameters, and re-executing the differential compression processing on the initial backlight values of the backlight partitions based on the adjusted compression parameters to obtain new compression backlight values of the backlight partitions; and updating the preset backlight value of each backlight partition based on the new compressed backlight value.
8. An image adjustment apparatus, comprising: the display device comprises an acquisition module, a display module and a display module, wherein the acquisition module is used for acquiring backlight partition information of an image to be displayed, the image to be displayed comprises a plurality of backlight partitions, and the backlight partition information comprises initial backlight values of the backlight partitions; The determining module is used for determining the significant characteristic parameters of each backlight partition based on the backlight partition information; The redistribution module is used for redistributing the total backlight power of the display equipment according to the obvious characteristic parameters of each backlight partition to obtain a target backlight value of each backlight partition; and the regulation and control module is used for regulating and controlling the luminous brightness of the corresponding backlight subarea through the backlight module of the display equipment according to the target backlight value of each backlight subarea so as to finish the display output of the image to be displayed.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the image adjustment method of any one of claims 1-7 when the computer program is executed by the processor.
10. A storage medium having stored thereon a computer program, wherein the computer program when executed by a processor realizes the steps of the image adjustment method according to any one of claims 1 to 7.

Description

Image adjustment method and device, intelligent television and storage medium Technical Field The present application relates to the field of image processing technologies, and in particular, to an image adjustment method and apparatus, an intelligent television, and a storage medium. Background The conventional local dimming technology is implemented by dividing an input image signal into a plurality of independent blocks through a special processing chip, performing statistical analysis on pixel brightness information in each block, and driving a backlight unit of a corresponding region to work according to a statistical result. However, the technical scheme has the obvious limitations in practical application that firstly, when a high-brightness target object exists in a picture, the traditional algorithm is used for ensuring the normal display of the high-brightness target, the backlight brightness of the whole dark area where the high-brightness target object exists is often improved, so that the bright light overflows, the region which is supposed to be in a full black state is subjected to halation, the contrast and layering sense of the picture are seriously damaged, secondly, when a complex bright and dark staggered scene is faced, the backlight of the dark region is easily improved excessively, the dark detail is submerged in the excessively bright backlight and is difficult to identify by adopting a brightness maximum value statistics strategy, and when the brightness average value statistics strategy is adopted, the brightness of the high-brightness object is insufficient due to the pulling-down effect of the dark region pixels, the visual effect of the high-brightness target object cannot be accurately restored, and the balanced display of the high-brightness detail and the dark layering of the picture is difficult to be considered. Accordingly, there is a need to develop an image adjustment method, apparatus, electronic device, and storage medium that solve one or more of the above-mentioned problems. Disclosure of Invention In view of the above, in order to solve the above technical problems or part of the technical problems, embodiments of the present application provide an image adjustment method, an apparatus, an electronic device, and a storage medium, where the method obtains backlight partition information of an image to be displayed, determines a significant feature parameter of each backlight partition based on the obtained backlight partition information, redistributes the total backlight power of the display device according to the obtained significant feature parameter, and adjusts and controls the light emitting brightness of the corresponding backlight partition according to the target backlight value, so as to realize the display output of the image to be displayed. In a first aspect, the present application provides an image adjustment method, the method comprising: acquiring backlight partition information of an image to be displayed, wherein the image to be displayed comprises a plurality of backlight partitions, and the backlight partition information comprises initial backlight values of the backlight partitions; determining a salient feature parameter of each backlight partition based on the backlight partition information; according to the significant characteristic parameters of each backlight partition, the total backlight power of the display equipment is redistributed to obtain target backlight values of the backlight partitions; and according to the target backlight value of each backlight partition, regulating and controlling the luminous brightness of the corresponding backlight partition through a backlight module of the display equipment, and finishing the display output of the image to be displayed. In one possible implementation manner, the determining, based on the backlight partition information, a salient feature parameter of each backlight partition includes: Based on the backlight partition information, determining an initial backlight value of each backlight partition and an initial backlight value of a peripheral backlight partition corresponding to each backlight partition, wherein the peripheral backlight partition refers to all other backlight partitions in a preset radius partition matrix taking the current backlight partition as a center; for any backlight partition, determining a peripheral brightness average value of the backlight partition according to initial backlight values of all peripheral backlight partitions corresponding to the backlight partition; Determining difference characteristics of initial backlight values of all backlight partitions in the image to be displayed, and constructing a significance calculation model based on the difference characteristics; and inputting the initial backlight value and the peripheral brightness average value of each backlight partition into the significance calculation model to obtain the significance