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Method and device for reducing color gradation of image display

A picture display and color scale technology, which is applied in the field of information processing, can solve the problems that cannot meet the requirements of pictures or images with multiple color gradients, fixed color scale difference diffusion threshold, etc., so as to improve user experience and reduce color scale. Effect

Active Publication Date: 2010-03-03
HUAWEI DEVICE (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the process of realizing the present invention, the inventors found that there are at least the following problems in the prior art: in this solution, the color scale difference diffusion threshold between each pixel is fixed, and will not be adjusted according to the degree of color gradient of the picture or image, Does not meet the requirements for pictures or images with multiple degrees of color gradation

Method used

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  • Method and device for reducing color gradation of image display
  • Method and device for reducing color gradation of image display
  • Method and device for reducing color gradation of image display

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Embodiment 1

[0021] In this embodiment, if a picture with a color gradient area needs to be displayed on a device using 16-bit color display, the color gradation displayed by the device using 16-bit color display can be eliminated and reduced by adding noise points in the color gradient area .

[0022] Taking the processing in the picture decoding process as an example, the processing flow of a method for reducing the color scale displayed by a device using 16-bit color display by adding noise points provided by this embodiment is as follows: figure 1 As shown, the following processing steps are included:

[0023] Step 11. Obtain the source picture before the picture is decoded.

[0024] Get the data of the source picture before picture decoding from local or network, and prepare for picture decoding. If the display device is a 32-bit display interface, use the normal picture decoding process for processing; if the display device is a device with color loss, such as a device that uses 16...

Embodiment 2

[0041] In this embodiment, if a picture with a color gradient area needs to be displayed on the 16-bit color display interface, the color gradation displayed on the 16-bit color display interface is eliminated and reduced by adding a semi-transparent picture in the color gradient area.

[0042] Taking the processing in the picture decoding process as an example, the processing flow of a method for reducing the color scale displayed by a device using 16-bit color display by superimposing semi-transparent pictures provided by this embodiment is as follows: figure 2 As shown, the following processing steps are included:

[0043] Step 21. Obtain the source picture before the picture is decoded.

[0044] Get the data of the source picture before picture decoding from local or network, and prepare for picture decoding. If the display device is a 32-bit display interface, use the normal picture decoding process for processing; if the display device is a device with color loss, such...

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Abstract

The embodiment of the invention provides a method and a device for reducing color gradation of image display, wherein the method mainly comprises the steps of judging whether an image has color gradient areas or not according to change rates of pixel values of all the areas in the image, and adding corresponding variedness points in the color gradient areas or superimposing a semitransparent imagein the image according to the color gradient grade of the color gradient areas when judging that the image has color gradient areas. The invention can reduce the color gradation of image display andimprove user experience through adding the variedness points or the semitransparent image in the image after judging that the image has color gradient areas.

Description

technical field [0001] The invention relates to the field of information processing, in particular to a method and device for reducing the color scale of picture display. Background technique [0002] 32-bit color display can display true color without loss, and the color space that can be represented is 2 32 , the interface display effect is delicate, and can be applied to various products such as graphics workstations, PCs (Personal Computers, personal computers) and high-end graphics equipment. However, the use of 32-bit color display requires a large amount of data to be calculated and processed, and requires a lot of memory. It is difficult to apply to many devices, especially embedded devices. [0003] Compared with 32-bit color display, 16-bit color display can save memory and improve processing speed, and the display effect meets the needs of most users. Therefore, there are many devices using 16-bit color display on the market, such as set-top boxes, video phones, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G5/00G09G5/02
Inventor 刘志刚姚静
Owner HUAWEI DEVICE (SHENZHEN) CO LTD