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Color palette-based image processing method and image processing device

An image processing device and image processing technology, applied in the field of video decoding, can solve problems such as slow decoding, achieve the effect of reducing power consumption and processing time, and optimizing the image rendering process

Active Publication Date: 2016-11-09
FUZHOU ROCKCHIP SEMICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a palette-based image processing method and image processing device to solve the problem of slow decoding based on the palette mode

Method used

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  • Color palette-based image processing method and image processing device
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  • Color palette-based image processing method and image processing device

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Embodiment Construction

[0037] In order to explain in detail the technical content, structural features, achieved goals and effects of the technical solution, the following will be described in detail in conjunction with specific embodiments and accompanying drawings. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more aspects. It may be evident, however, that such aspects may be practiced without these specific details.

[0038] list of acronyms

[0039] LUT: Lookup table (look up table), is a data structure that replaces the array or associative array calculated at runtime with simple query operations. In this question, it refers to a linear table that establishes a corresponding relationship between limited pixel values ​​and RGB colors.

[0040] DMA: Direct Memory Access (DMA) is a memory access technique in computer science. It allows some hardware subsystems (computer peripherals) insid...

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Abstract

The invention discloses a color palette-based image processing method and an image processing device, and aims at solving the problem that the color palette mode-based decoding is slow. The method and device disclosed in the invention relate to video decoding; and image data consists of pixel values which are arranged like a matrix. The method comprises the following steps: carrying out lookup table mapping on the image data which adopts a color palette mode; and carrying out pixel coordinate matrix transformation on the mapped image data. The method has the effect of improving the image processing speed.

Description

technical field [0001] The present invention relates to video decoding. Background technique [0002] In computer graphics technology, the color of a pixel is represented by its R, G, and B components, and each component is quantized. The total quantization level of a pixel is the color depth of the display system. The higher the quantization level, the more colors can be represented, and the more realistic the final image will be. When the quantization level reaches more than 16 bits, it is called true color. However, the higher the number of quantization levels, the higher the data width required, and the heavier the burden on the processor; when the number of quantization levels is below 8 bits, the colors that can be expressed are too few to satisfy users. specific needs. [0003] In order to solve this problem, palette technique can be adopted. The so-called palette is a linear table that establishes a corresponding relationship between limited pixel values ​​and RG...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/14
CPCG06F3/1407G06F3/1423
Inventor 郑天翼张圣钦李仙辉
Owner FUZHOU ROCKCHIP SEMICON