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CN-122024632-A - Image display method, device, computer equipment and storage medium

CN122024632ACN 122024632 ACN122024632 ACN 122024632ACN-122024632-A

Abstract

The embodiment of the invention relates to an image display method, an image display device, computer equipment and a storage medium, wherein a target pixel is screened from an original image to be displayed, and the target pixel represents a pixel with abnormal display effect of the original image in a low gray scale display process; and the image after the redistribution of the RGB components is output to a display screen for display. Therefore, target pixels with abnormal display effect in the low-gray-scale display process can be screened, so that gray scale values of RGB components are redistributed, on the premise that the overall brightness of the target pixels is kept unchanged, the RGB components with higher brightness are reduced, the RGB components with lower brightness are improved, the problem of uneven brightness distribution in the low-gray-scale display process is solved, the phenomena of flickering and pocking marks are weakened, and the smoothness and the display stability of gray scale transition are improved.

Inventors

  • HUANG JIAHAO

Assignees

  • 深圳创维显示科技有限公司

Dates

Publication Date
20260512
Application Date
20251230

Claims (10)

  1. 1. An image display method, comprising: Screening out target pixels from an original image to be displayed, wherein the target pixels represent pixels with abnormal display effects of the original image in a low gray scale display process; reassigning gray scale values corresponding to each RGB component of the target pixel, so that the brightness of the component with the highest brightness in the reassigned RGB components is reduced, and after the brightness of the component with the lowest brightness in the RGB components is improved, the overall brightness of the target pixel is kept unchanged, and each RGB component corresponds to different brightness under different gray scale values; And outputting the image with the reassigned RGB components to a display screen for display.
  2. 2. The method of claim 1, wherein the screening out the target pixel from the original image to be displayed comprises: converting an original image to be displayed into image data in an RGB format, and obtaining a group of RGB components corresponding to each pixel in the original image; determining a target gray scale range of a display screen with abnormal display effect in a low gray scale display process; judging whether the gray scale value of the corresponding RGB component is in the target gray scale range or not according to each pixel; and determining the pixel with the gray scale value of the RGB component in the target gray scale range as the target pixel.
  3. 3. The method according to claim 1, wherein before the reassigning the gray scale value corresponding to each RGB component of the target pixel such that the highest luminance component of the RGB components is reduced in luminance after reassigning, the method further comprises: Obtaining standard integral brightness of each level of gray scale of the display screen in a target gray scale range, wherein the standard integral brightness represents integral display brightness under each level of gray scale when the gray scale values of the RGB components are not redistributed, and the gray scale values of each RGB component are the same when the gray scale values are not redistributed; Respectively aiming at a red component, a green component and a blue component contained in the RGB component, obtaining the standard brightness of each component in each level of gray scale, and obtaining the red standard brightness, the green standard brightness and the blue standard brightness corresponding to each level of gray scale; aiming at each level of gray scale, controlling the gray scale value of the red component to be unchanged to obtain a red gray scale value, and controlling the gray scale value of the green component to reduce the target gray scale number to obtain a green gray scale value; for each level of gray scale, determining the target blue standard brightness corresponding to the current gray scale according to the standard overall brightness, the red standard brightness corresponding to the red gray scale value and the green standard brightness corresponding to the green gray scale value; Determining a blue gray scale value corresponding to the target blue standard brightness for the blue component; And taking the red gray scale value, the green gray scale value and the blue gray scale value as new gray scale values corresponding to RGB components, and generating and storing the corresponding relation between each level of gray scale of the RGB components and the new gray scale values.
  4. 4. The method according to claim 3, wherein the obtaining, for the red component, the green component, and the blue component included in the RGB component, standard luminance of each component at each level of gray scale, to obtain red standard luminance, green standard luminance, and blue standard luminance corresponding to each gray scale, includes: Setting gray scale values corresponding to the green component and the blue component to zero, and acquiring the luminous brightness of each level of gray scale of the red component in a target gray scale range as the red standard brightness; setting gray scale values corresponding to the red component and the blue component to zero, and acquiring the luminous brightness of each level of gray scale of the green component in a target gray scale range as the green standard brightness; and setting gray scale values corresponding to the red component and the green component to zero, and acquiring the luminous brightness of each level of gray scale of the blue component in a target gray scale range as the blue standard brightness.
  5. 5. A method according to claim 3, wherein said reassigning the gray scale value for each RGB component of the target pixel comprises: Acquiring the current gray scale corresponding to the target pixel; acquiring a target new gray scale value corresponding to the current gray scale from the corresponding relation; And respectively replacing the gray scale values of the red component, the green component and the blue component corresponding to the target pixel according to the target new gray scale value to obtain the reassigned RGB gray scale value corresponding to the target pixel.
  6. 6. The method of claim 1, wherein outputting the image with the reassigned RGB components to a display screen for display comprises: Converting the image after the redistribution of the RGB components into a display data format matched with the display screen driving interface; encoding RGB component gray scale values corresponding to pixels in the image based on the display data format; and sending the encoded display data to a driving module of the display screen to control the display screen to perform luminous display according to the reassigned RGB component gray scale values.
  7. 7. The method of claim 1, wherein after outputting the image after the redistribution of the RGB components to a display screen for display, the method further comprises: Acquiring a display stability parameter of the display screen in a low gray scale display state, wherein the display stability parameter is used for representing brightness fluctuation or flicker degree in the low gray scale display process; And dynamically correcting the gray scale values after the reassignment of the RGB components according to the display stability parameters, and outputting the gray scale values to the display screen for display.
  8. 8. An image display device, comprising: the screening module is used for screening target pixels from an original image to be displayed, wherein the target pixels represent pixels with abnormal display effects of the original image in the low gray scale display process; The processing module is used for carrying out reassignment on the gray scale value corresponding to each RGB component of the target pixel so as to enable the component with the highest brightness in the RGB components to reduce the brightness after reassignment and enable the component with the lowest brightness in the RGB components to improve the brightness, so that the overall brightness of the target pixel is kept unchanged, and each RGB component corresponds to different brightness under different gray scale values; and the output module is used for outputting the image after the redistribution of the RGB components to a display screen for display.
  9. 9. A computer device comprising a processor and a memory, wherein the processor is configured to execute an image display program stored in the memory, so as to implement the image display method according to any one of claims 1 to 7.
  10. 10. A storage medium storing one or more programs executable by one or more processors to implement the image display method of any one of claims 1-7.

Description

Image display method, device, computer equipment and storage medium Technical Field The embodiment of the invention relates to the technical field of image processing, in particular to an image display method, an image display device, computer equipment and a storage medium. Background With the development of display technology, a Light-Emitting Diode (LED) display screen has the advantages of high brightness, long service life, fast response speed and the like, and is widely applied to the display field. With the continuous improvement of the requirements of users on display effects, especially in dark fields and low-brightness scenes, the requirements on the transition smoothness of display gray scales and the picture stability are increasingly improved. However, due to the physical characteristics of the LED light emitting chip, the conventional LED display screen has a problem of higher gray scale brightness when displaying low gray scale, and the brightness variation range is usually larger from 0 gray scale to 1 gray scale, so that the transition of the low gray scale brightness is not smooth enough, and the display effect is affected. In order to improve the low gray scale display effect, the prior art generally mixes the gray scale with the middle brightness between the off state of the light emitting chip and the lowest brightness by means of spatial integration or time integration. The space integration mode realizes brightness adjustment by controlling the number of the lights on and off in the display block, but the mode is easy to introduce uneven brightness and pockmarks, and can reduce the picture detail expression in a low gray level scene, the time integration mode realizes brightness control by reducing the duty ratio of a single light emitting chip, and when the duty ratio is lower, a perceptible flicker phenomenon is easy to generate, and the two modes depend on the visual inertia of human eyes, so that the display stability and the brightness uniformity are difficult to be simultaneously realized under the low gray level condition. In addition, as the lowest controllable brightness of the LED light-emitting chip is higher, an obvious brightness difference exists between the LED light-emitting chip and the completely-off state, even if two modes of space integration and time integration are combined, the problems of uneven brightness, flickering, pocking marks and the like still easily occur in the low-gray-scale display process, and the overall consistency and visual experience of a display picture are affected. Therefore, the existing low-gray-scale display technology still has difficulty in effectively improving the low-gray-scale display quality on the premise of ensuring that the overall brightness does not change obviously, and a way for improving the display effect of the LED display screen in a low-gray-scale scene is needed. Disclosure of Invention In view of the foregoing, embodiments of the present invention provide an image display method, an image display device, a computer device, and a storage medium to solve the foregoing technical problems or some of the foregoing technical problems. In a first aspect, an embodiment of the present invention provides an image display method, including: Screening out target pixels from an original image to be displayed, wherein the target pixels represent pixels with abnormal display effects of the original image in a low gray scale display process; reassigning gray scale values corresponding to each RGB component of the target pixel, so that the brightness of the component with the highest brightness in the reassigned RGB components is reduced, and after the brightness of the component with the lowest brightness in the RGB components is improved, the overall brightness of the target pixel is kept unchanged, and each RGB component corresponds to different brightness under different gray scale values; And outputting the image with the reassigned RGB components to a display screen for display. In one possible implementation manner, the screening the target pixel from the original image to be displayed includes: converting an original image to be displayed into image data in an RGB format, and obtaining a group of RGB components corresponding to each pixel in the original image; determining a target gray scale range of a display screen with abnormal display effect in a low gray scale display process; judging whether the gray scale value of the corresponding RGB component is in the target gray scale range or not according to each pixel; and determining the pixel with the gray scale value of the RGB component in the target gray scale range as the target pixel. In one possible embodiment, before the reassigning the gray-scale value corresponding to each RGB component of the target pixel so that the component with the highest brightness in the RGB components after reassigning reduces the brightness, the method further includes: Obtaining standard