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Method and apparatus for intra picture block copy in video compression

A video compression and block technology, applied in digital video signal modification, image communication, electrical components, etc.

Active Publication Date: 2018-09-25
XUESHAN TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First, motion vectors are restricted to one dimension, i.e. horizontal or vertical, rather than two

Method used

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  • Method and apparatus for intra picture block copy in video compression
  • Method and apparatus for intra picture block copy in video compression
  • Method and apparatus for intra picture block copy in video compression

Examples

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Embodiment Construction

[0030] overview

[0031] The present invention provides a new and non-obvious new approach and technique for padding of intra picture block copy in video compression when there is an overlap between the reference block and the block currently to be predicted implementation. refer to Figure 1-7 , various descriptions of embodiments of the present invention are as follows.

[0032] It is worth noting that although each example described and explained here is suitable for the case where the reference block is located on the left and above the current block to be predicted, the embodiments of the present invention are also applicable to the reference block and the current block to be predicted. Other cases where the directions differ between predicted blocks. For example, the embodiments of the present invention are also applicable to the case where the reference block is located on the right and above the current block to be predicted. Similarly, the embodiments of the prese...

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Abstract

Implementations of techniques of intra picture block copy in video compression are described. In one example implementation, a method may include: identifying a first block of pixels of a plurality of pixels of a picture as a reference block for reconstructing a second block of pixels of the plurality of pixels of the picture; determining an overlapped region of the second block that overlaps with the first block; and reconstructing pixels in the overlapped region based on a first set of pixels and a second set of pixels of the first block.

Description

[0001] cross reference [0002] This application claims priority to US Patent Application No. 61 / 910,134, filed November 29, 2013. This patent application is hereby incorporated by reference in its entirety. technical field [0003] The present invention relates to video compression, and more particularly to video compression using intra picture block copy. Background technique [0004] Unless otherwise indicated herein, what is described in this subsection does not constitute prior art to the claims in the present invention and is not admitted to be prior art. [0005] Video compression becomes important due to the growing popularity of various video-related applications (eg, streaming media, wireless display, remote gaming, cloud computing, distance education, etc.). Videos in these applications often have mixed content including natural video, text and graphics in the same picture. [0006] The High Efficiency Video Coding (HEVC) standard is the follow-up to the Advanc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/00
CPCH04N19/593H04N19/11H04N19/139H04N19/172H04N19/176H04N19/182H04N19/583
Inventor 刘杉许晓中张筠
Owner XUESHAN TECH INC
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