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Methods and apparatus for transform selection in video encoding and decoding

A video encoder and inverse transform technology, applied in the field of video encoding and decoding, can solve the problem of insufficient utilization and other problems

Active Publication Date: 2012-01-04
INTERDIGITAL VC HLDG INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0027] Previous approaches propose a limited range of choices for optimal transformations and do not fully exploit the available possibilities

Method used

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  • Methods and apparatus for transform selection in video encoding and decoding
  • Methods and apparatus for transform selection in video encoding and decoding
  • Methods and apparatus for transform selection in video encoding and decoding

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Embodiment Construction

[0049] The present principles are directed to methods and apparatus for transform selection in video coding.

[0050] This specification illustrates the principle. 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 encompassed within its spirit and scope.

[0051] All examples and conditional language recited herein are instructional, intended to assist the reader in understanding the principles and concepts contributed by the inventor(s) to advance technological progress, and should be understood not to be limited to such specifically recited examples and conditions

[0052] Moreover, all statements herein reciting 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 intended that such equivalents ...

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Abstract

There are provided methods and apparatus for transform selection in video coding. An apparatus includes a video encoder (300) for encoding at least a block in a picture by selecting a transform (329) to apply to a residue of the block from a set of two or more available transforms(325, 326, 327). The transform is selected based on at least one of an inter prediction mode used to predict at least one reference for the block, one or more values corresponding to a motion vector, a value of a residue of one or more previously encoded blocks, a value of prediction data for the block, one or more transform selections of one or more neighboring reconstructed blocks, and a quantization step applied to transform coefficients for the residue of the block.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application Serial No. 61 / 147,705, filed January 27, 2009, which is hereby incorporated by reference in its entirety. This application also claims the benefit of US Provisional Application Serial No. 61 / 207,783, filed February 17, 2009, which is hereby incorporated by reference in its entirety. Furthermore, this application is also closely related to two other applications, both filed concurrently with this application and having common inventors and common assignees (Attorney Docket Nos. PU090137 and PU090138), each of which is incorporated by reference in its entirety, And each claims the benefit of U.S. Provisional Application Serial No. 61 / 147,705, filed January 27, 2009, and U.S. Provisional Application Serial No. 61 / 207,783, filed February 17, 2009. technical field [0003] The present principles relate generally to video encoding and decoding, and more particu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/12
CPCH04N19/00375H04N19/00781H04N19/00072H04N19/00278H04N19/00084H04N19/00175H04N19/00139H04N19/00145H04N19/00551H04N19/00218H04N19/00545H04N19/12H04N19/139H04N19/159H04N19/176H04N19/18H04N19/198H04N19/61H04N19/96H04N19/625H04N19/70H04N19/197H04N19/119H04N19/147H04N19/46H04N19/122H04N19/463H04N19/136H04N19/137H04N19/86
Inventor J.索尔尹鹏郑云飞C.格米拉
Owner INTERDIGITAL VC HLDG INC