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Implementation design for hybrid transform coding scheme

A collection, computer technology, applied in the field of image and video compression coding, can solve the problem of codec computational complexity, and achieve the effect of efficient coding acceleration and efficient hardware utilization

Active Publication Date: 2016-07-13
GOOGLE LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in terms of hardware design, the transform module can contribute most of the codec computational complexity

Method used

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  • Implementation design for hybrid transform coding scheme
  • Implementation design for hybrid transform coding scheme
  • Implementation design for hybrid transform coding scheme

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Embodiment Construction

[0023] According to aspects of the present disclosure, a method and system for improving image or video compression performance are presented herein. The disclosed methods and systems provide a means to achieve intra (within a single frame) coding and prediction for use in video codecs.

[0024] One motivation for employing a block coder is to separate the video frame into distinct regions, each of which may have its own local stabilization signal statistics. To achieve maximum compression efficiency, intra coding exploits local anisotropy (eg, the occurrence of spatial patterns within a frame) via the spatial prediction of each block from previously coded neighboring pixels available at block boundaries.

[0025] The hybrid transform coding scheme allows a choice between discrete sinusoidal transform (DST) and asymmetric DST according to the quality and availability of boundary information. The hybrid transform coding scheme can achieve bit savings with the same peak signal-...

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Abstract

A method and system may identify a video data block using a video codec and apply a transform kernel of a butterfly asymmetric discrete sine transform (ADST) to the video data block in a pipeline.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to and is a continuation of US Nonprovisional Patent Application No. 14 / 087,568, filed November 22, 2013, the disclosure of which is hereby incorporated by reference in its entirety. Background technique [0003] This disclosure relates to image and video compression encoding. In image or video compression coding, intra coding refers to a compression technique that compresses a video or image within a single frame, rather than relative to any other frame in a video sequence. [0004] Transform coding is a central component in video and image compression. Optimizations that can use transform kernels can be used to exploit signal correlation for compression gain. However, in terms of hardware design, the transform module can contribute most of the codec computational complexity. Therefore, there is a need for systems, methods, and devices for addressing the deficiencies of current techno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/625H04N19/60
CPCH04N19/12H04N19/159H04N19/176H04N19/439H04N19/593H04N19/60H04N19/61H04N19/625G06T1/20G06T9/007
Inventor 韩敬宁许耀武德巴尔加·慕克吉
Owner GOOGLE LLC
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