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Method and apparatus for palette index coding in video and image compression

一种调色板、图像中的技术，应用在图像通信、数字视频信号修改、电气元件等方向，能够解决语法元素冗余等问题

Active Publication Date: 2018-01-02
HFI INNOVATION INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for monochrome video coding systems, there is only one color element, and syntax elements related to chroma elements can have many redundancies

Method used

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  • Method and apparatus for palette index coding in video and image compression
  • Method and apparatus for palette index coding in video and image compression
  • Method and apparatus for palette index coding in video and image compression

Examples

Experimental program
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Effect test

example 1

[0114] Example 1. The encoding order of the palette index map is: run type group → palette index group → run length group → escape pixel group

example 2

[0115] Example 2. The encoding order of the palette index map is: run type group → run length group → palette index group → escape pixel group

[0116] a. In the case of only combining the palette index and escaped pixels separately, the encoding order of the palette index map is: interlaced (run type, run length) → palette index group → escaped pixel group

example 3

[0117] Example 3. The coding order of the palette index map is: palette index group → run type group → run length group → escape pixel group

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Abstract

A method of palette index map coding of blocks in a picture by grouping coded symbols of the same type is disclosed for video encoder and decoder. In one embodiment, all syntax elements correspondingto the pixel index are grouped into a pixel index group, and all syntax elements corresponding to the escape pixel are grouped into an escape pixel group. All syntax elements corresponding to the runtype and run length are grouped into an interleaved run type / run length group, or grouped into separate run type group and run length group. In another embodiment, the system parses from the video bitstream a last-run mode syntax element for a current block, where the last-run mode syntax element indicates whether a last run mode is a copy-index mode or a copy-above mode. Information associated with the last-run mode syntax element is used for reconstructing palette index map.

Description

[0001] cross reference [0002] This application claims priority as follows: U.S. Provisional Patent Application No. 62 / 115,748, filed February 13, 2015; U.S. Provisional Patent Application No. 62 / 116,704, filed February 16, 2015; U.S. Provisional Patent Application No. 62 / 133,644, filed March 16, 2015; U.S. Provisional Patent Application No. 62 / 134,108, filed March 17, 2015; U.S. Provisional Patent Application No. 62 / 218,751, filed March 17, 2015; U.S. Provisional Patent Application, Sept. 15, 2015; U.S. Provisional Patent Application No. 62 / 219,790, filed Sept. 17, 2015; U.S. Provisional Patent Application No. 62 / 243,208, filed Oct. 19, 2015 Provisional Patent Application. The aforementioned US Provisional Patent Application is hereby incorporated by reference. technical field [0003] The invention relates to a palette index map coding technology (palette index map coding) of video data. In particular, the present invention relates to a syntax signal encoded by a palett...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/93
CPCH04N19/436H04N19/593H04N19/70H04N19/91H04N19/93H04N19/182
Inventor 刘杉许晓中庄子德孙域晨赖柏霖黄毓文夜静
Owner HFI INNOVATION INC
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