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Image processing method and device

An image processing and pixel technology, applied in the direction of image data processing, image communication, image coding, etc., can solve the problem that cannot be converted into palette pixels and so on

Active Publication Date: 2020-06-16
TONGJI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] The present invention provides an image processing method and device to at least solve the problem in the related art that any pixel other than the current block cannot be converted into a palette pixel of the current block

Method used

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  • Image processing method and device
  • Image processing method and device
  • Image processing method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] The palette pixels (or equivalently, the pixel index) are divided into K groups according to the characteristics of predetermined pixel values; for an arbitrary pixel sample value, the conversion method includes at least the following steps:

[0065] According to the characteristics of the above-mentioned predetermined pixel value and the value of the arbitrary pixel sample value, determine that the arbitrary pixel sample value is classified into one of the K groups, that is, determine the optimal group;

[0066] Calculate the distance between the arbitrary pixel sample value and some or all palette pixel sample values ​​in the optimal group, and determine a palette pixel sample value with the optimal distance, that is, determine the optimal color palette Plate pixel samples.

Embodiment 2

[0068] The distance in Embodiment 1 is an error between pixels.

Embodiment 3

[0070] The characteristic of the predetermined pixel numerical value in Embodiment 1 is the characteristic of the magnitude of the numerical values ​​of the three components of the pixel.

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PUM

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Abstract

The present invention provides an image processing method and device, wherein the method includes: determining the corresponding pixel corresponding to the input pixel in the palette pixel, wherein the input pixel includes pixels other than the palette pixel pixel; converting the input pixel to the corresponding pixel in the palette pixel. The present invention solves the problem in the related art that any pixel outside the current block cannot be converted into a palette pixel of the current block, and then achieves the adjustment of converting any pixel outside the current block into the current block. The purpose of swatch pixels is to improve the compression efficiency effect.

Description

technical field [0001] The present invention relates to the field of digital video compression coding and decoding systems, in particular to an image processing method and device. Background technique [0002] As TVs and monitors enter ultra-high-definition (4K) and ultra-high-definition (8K) resolutions, as well as the development and popularization of a new generation of cloud computing and information processing models and platforms with remote desktops as a typical form, the video image The need for data compression is also moving towards higher resolutions and composite images that include camera ingested images and computer screen images. It has become an indispensable technology to perform ultra-high compression ratio and extremely high-quality data compression on video images. [0003] Make full use of the characteristics of 4K / 8K images and computer screen images to compress video images with high efficiency. A major goal of national standards, domestic standards,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/182H04N19/186
CPCH04N19/182H04N19/186G06T9/00H04N19/103H04N19/196
Inventor 林涛李明尚国强吴钊
Owner TONGJI UNIV
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