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Pixel format converting method and device in graphic processing

A technology of pixel format and conversion device, applied in the direction of cathode ray tube indicator, instrument, static indicator, etc., can solve the problems of graphics processing unit circuit non-reusability, resource and time waste, etc.

Inactive Publication Date: 2011-03-30
SHANGHAI MAGIMA DIGITAL INFORMATION
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Therefore, only some new pixel formats generated for simple changes in existing pixel formats will cause the original graphics processing unit circuit to be unreusable, and the logic circuit of the graphics processing unit needs to be redesigned, resulting in resources and time. waste of

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  • Pixel format converting method and device in graphic processing
  • Pixel format converting method and device in graphic processing
  • Pixel format converting method and device in graphic processing

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Embodiment Construction

[0042] There are many types of pixel formats in graphics processing, and most of them can be classified according to different standards. For example, according to whether it is necessary to query the memory address to obtain pixel format data, it can be divided into look-up table (LUT) data and non-look-up table (LUT) data; according to the color coding method, it can be divided into RGB type and YUV type; according to pixel The bit width can be divided into 1bpp / 2bpp / 4bpp / 8bpp / 16bpp / 24bpp / 32bpp (bpp means bit per pixel, that is, the bit width per pixel) and other types. In addition, according to the position of each color channel, different pixel formats can be distinguished.

[0043]In order to adopt a more flexible and unified structure to describe the pixel format conversion module in the graphics processing unit, different types of pixel formats can be adjusted into a roughly unified format according to the classification standards of different types of pixel formats, so...

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Abstract

The invention relates to a pixel format converting method and a pixel format converting device for graphic processing. The method comprises the following steps of: (1) reading input data, splitting the read input data to form a uniform bit width format; (2) judging whether the input data is a lookup table type or not, if so, indicating that the input data is a storage address of pixel format datawith a real color type in a storage, and reading the pixel format data with the real color type from the storage according to the address, and otherwise, indicating the input data is the pixel formatdata with the real color type; (3) dividing the read pixel format data with the uniform bit width format into multiple paths according to components, and extracting effective data respectively; (4) performing bit expansion on the effective data of each path of pixel format component data to obtain expanded pixel format component data with uniform bit width; and (5) splicing each path of expanded pixel format component data with the uniform bit width to form the integral pixel format data.

Description

technical field [0001] The present invention relates to a graphics processing unit (Graphics Processing Unit; GPU) in an image display system, in particular to a pixel format conversion method and device in the graphics processing unit. Background technique [0002] In an image display system, post-processing of video images is generally performed by a graphics processing unit before display and playback. The most typical application of the graphics processing unit is to perform calculations on multiple input images according to certain rules, and store the calculation results in the output images in a certain way. figure 1 A schematic diagram of a graphics processing unit with two inputs and one output. The input image 1 and the input image 2 respectively serve as two inputs of the graphics processing unit 100 , and become the output image 3 after specific calculation and processing operations are performed by the graphics processing unit 100 , and are output by the graphi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G5/00G09G5/02G09G3/20
Inventor 周振亚祝叶华孙炜
Owner SHANGHAI MAGIMA DIGITAL INFORMATION