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Advanced screen content coding with improved palette table and index map coding methods

A technology of screen content coding and palette table, applied in the field of advanced screen content coding, which can solve the problems of limited intra-frame block coding performance and increasing the complexity of the encoder.

Active Publication Date: 2017-02-15
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the fixed block decomposition, the coding performance of intra block copying is limited
Doing block matching (similar to motion estimation for intra images) also significantly increases the encoder complexity in terms of computation and memory access

Method used

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  • Advanced screen content coding with improved palette table and index map coding methods
  • Advanced screen content coding with improved palette table and index map coding methods
  • Advanced screen content coding with improved palette table and index map coding methods

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Embodiment Construction

[0029] discussed below Figure 1 to Figure 18 The various embodiments used to describe the principles of the invention in this patent document are by way of illustration only and should not be construed as limiting the scope of the invention in any way. Those skilled in the art will understand that the principles of the invention may be implemented in any type of suitably arranged device or system.

[0030] Accordingly, the following documents and standard descriptions are incorporated into the present invention as if fully set forth herein.

[0031] "AHG7: Full-chroma (YUV444) dictionary + hybrid dual encoder extension for HEVC (AHG7: Full-chroma (YUV444) dictionary + hybrid dual- coder extension of HEVC)", JCT-VC document, JCTVC-K0133, Shanghai, China, October 2012 (hereinafter referred to as "REF1");

[0032] "RCE3 Test 2: Multi-stage Base Color and Index Map (RCE3 Test 2: Multi-stage Base Color and Index Map)" by W.Zhu, J.Xu, W.Ding, JCT-VC Document, JCTVC-N0287, Austria...

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Abstract

An apparatus is configured to perform a method for screen content encoding. The method includes deriving a palette table and a color index map based on a coding unit (CU). The method also includes encoding the palette table and encoding the color index map. The method further includes combining the encoded palette table and the encoded color index map for transmission to a receiver, where the palette table and index map are decoded to reconstruct a pixel block.

Description

[0001] Related application cross-application priority statement [0002] This application requires the 14th / Priority to U.S. Nonprovisional Patent Application No. 719,064, which claims an invention filed May 23, 2014, entitled "Advanced Screen Content Coding Scheme with Improved Color Table and Index Map Coding Method- PART THREE (ADVANCED SCREEN CONTENTCODING SOLUTION WITH IMPROVED COLOR TABLE AND INDEX MAP CODING METHODS-PART3)" U.S. Provisional Patent Application No. 62 / 002,556, the entire contents of which are incorporated in incorporated into this text. technical field [0003] The present invention relates generally to screen content coding, and more particularly to advanced screen content coding with improved color (palette) table and index map coding. Background technique [0004] Screen content coding brings new challenges to video compression because the signal characteristics of screen content coding are distinct compared with traditional video signals. Severa...

Claims

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Application Information

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IPC IPC(8): G06K9/36
CPCG06T9/00H03M7/30H04N19/70H04N19/593H04N19/463H04N19/91H04N19/186H04N19/42H04N19/136H04N19/176H04N19/423H04N19/44
Inventor 徐猛王炜马展王显于浩平
Owner HUAWEI TECH CO LTD
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