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Method and apparatus for improving entropy encoding and decoding

A coding and video coding technology, applied in the field of improved entropy coding and decoding

Active Publication Date: 2018-05-22
INTERDIGITAL VC HLDG INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this prior art approach is limited by flags greater than 1 and still uses two scan passes

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  • Method and apparatus for improving entropy encoding and decoding
  • Method and apparatus for improving entropy encoding and decoding
  • Method and apparatus for improving entropy encoding and decoding

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Embodiment Construction

[0036] The present principles are directed to methods and apparatus for improving entropy encoding and decoding.

[0037] This description illustrates the present principles. It will thus be appreciated that those skilled in the art can devise various arrangements which, although not explicitly described or shown herein, embody the present principles and are included within its spirit and scope.

[0038] All examples and conditional language enumerated herein are intended for teaching purposes to help readers understand the present principles and concepts contributed by the inventors to advance technological progress, and should be understood as not being limited to such specifically enumerated examples and conditions.

[0039] Moreover, all statements herein reciting various principles, aspects, and embodiments of the present principles, as well as specific examples thereof, are intended to encompass both structural and functional equivalents thereof. Additionally, it is int...

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Abstract

A method and apparatus for improving entropy encoding and decoding are provided. An apparatus comprising: a video encoder (200) for encoding at least one block in a picture by: transforming a residual of the block to obtain transform coefficients; quantizing the transform coefficients to obtain quantized transform coefficients; and entropy encoding The quantized transform coefficients. The quantized transform coefficients are encoded with a flag indicating that the current one of said quantized transform coefficients being processed is the last non-zero coefficient of the block with a value greater than or equal to the specified value.

Description

[0001] Cross reference to related applications [0002] This application claims the benefit of US Provisional Application No. 61 / 393,195, filed October 14, 2010, which is hereby incorporated by reference in its entirety. technical field [0003] The present principles relate generally to video encoding and decoding, and more particularly to methods and apparatus for improving entropy encoding and decoding. Background technique [0004] Video coding standards employ predictive and block-based transforms to balance redundancy in intra / inter correlation and achieve high compression efficiency. Moreover, entropy coding enables the coded bitstream to reach its entropy boundary and further improves the coding efficiency. [0005] An important use of entropy coding in video coding systems is to code the quantized transform coefficients of a block as a residual data block after intra / inter prediction, block transformation and quantization. For such data, entropy coding tools rangi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/13H04N19/46H04N19/60H04N19/70H04N19/61H03M7/40
CPCH03M7/4006H03M7/4018H04N19/70H04N19/46H04N19/13H04N19/61H04N19/60H04N19/176H04N19/124
Inventor 胡洋J.索尔吕小安尹鹏郑云飞
Owner INTERDIGITAL VC HLDG INC