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Image display control method, device, medium and display screen control system

A technology of image display and control method, which is applied in the fields of devices, image display control methods, media and display screen control systems, and can solve the problems of deviation in display effect, failure to display details, uneven color distribution of high-brightness display screens, etc.

Active Publication Date: 2020-07-17
BEIJING KYSTAR TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the low grayscale interval with small grayscale value, when using the above formula to determine the PWM value, the obtained PWM value has a strong jump, resulting in uneven color distribution when the high-brightness display screen displays images.
That is to say, there are display defects in the low grayscale part of the image, and the details cannot be displayed, resulting in a deviation in the display effect, resulting in a poor viewing experience for the user.

Method used

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  • Image display control method, device, medium and display screen control system
  • Image display control method, device, medium and display screen control system
  • Image display control method, device, medium and display screen control system

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Embodiment Construction

[0054] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0055] The application scenarios of the method provided in the present disclosure will be briefly described below. The display controller adjusts the brightness of the high-brightness display by controlling the duty cycle of the PWM. Generally, the relationship between gray scale and brightness is adjusted through gamma correction. The key is to use the gray scale to determine the duty cycle of the PWM. In the prior art, converting low-bit grayscale data into high-bit grayscale data (for example, converting 8-bit grayscale data into 16-bit grayscale data) usually uses a standard grayscale PWM value function, and the standard grayscale PWM value function is y...

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Abstract

The invention relates to an image display control method, device, medium and display screen control system. The method comprises the following steps: acquiring an input gray value of each pixel pointof an input image; for each pixel point, if an input gray value of the pixel point is greater than a preset gray threshold, determining a PWM value corresponding to the pixel point according to the input gray value and the preset gamma value; or if the input gray value of the pixel point is less than or equal to the preset gray threshold, determining the PWM value corresponding to the pixel pointaccording to the input gray value; and performing pulse width modulation according to the PWM value of each pixel point so as to display the input image on a target display screen. Therefore, when theimage is displayed on the display screen, the image on the display screen is continuous and uniform and the display effect can be improved. The display quality of the output image can be guaranteed when the method is applied to a scene of mapping any low-order display data to the high-order display data.

Description

technical field [0001] The present disclosure relates to the field of display, and in particular, to an image display control method, device, medium, and display screen control system. Background technique [0002] At present, images on a computer screen or a video camera are displayed in an 8-bit RGB display mode to restore the true color of the image. The 8-bit RGB display mode means that R (red), G (green), and B (blue) are all 8-bit data, that is to say, there are 256 (2 8 =256) gray levels. However, existing high-brightness display devices (for example, LED display screens) generally have high contrast, so high-brightness display devices generally display in a 16-bit RGB display mode. Therefore, if the image of the computer screen or camera is to be displayed through a high-brightness display device, the image of the computer or camera should be converted into a 16-bit RGB display mode available for the high-brightness display device. [0003] The display controller ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/32
CPCG09G3/32G09G2320/0276
Inventor 陈先勇
Owner BEIJING KYSTAR TECH CO LTD
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