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Methods and apparatus for determining quantization parameter predictors from a plurality of neighboring quantization parameters

A technique for quantizing parameters and predicting values, applied in the field of video encoding and decoding

Active Publication Date: 2013-06-12
INTERDIGITAL VC HLDG INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0032] These and other shortcomings and deficiencies in the prior art are addressed by the present principles, which are directed to methods and apparatus for determining quantization parameter predictors from a plurality of adjacent quantization parameters

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  • Methods and apparatus for determining quantization parameter predictors from a plurality of neighboring quantization parameters
  • Methods and apparatus for determining quantization parameter predictors from a plurality of neighboring quantization parameters
  • Methods and apparatus for determining quantization parameter predictors from a plurality of neighboring quantization parameters

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Embodiment Construction

[0050] The present principles are directed to a method and apparatus for determining a quantization parameter predictor from a plurality of neighboring quantization parameters.

[0051] This description illustrates the present principles. It is thus to be understood that those skilled in the art will be able to devise various arrangements for implementing the present principles, which although not explicitly described or shown herein are included within the spirit and scope of the present principles middle.

[0052] All examples and conditional language set forth herein are intended to assist the reader in understanding the didactic purpose for which the inventor(s) contributed to advance the present principles and concepts in the art, and are to be construed as not limiting to what is so specifically stated Examples and conditions.

[0053] Moreover, all statements herein reciting principles, aspects, and embodiments of the present principles, as well as specific examples t...

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Abstract

Methods and apparatus are provided for determining quantization parameter predictors from a plurality of neighboring quantization parameters. An apparatus includes an encoder (300) for encoding image data for at least a portion of a picture using a quantization parameter predictor for a current quantization parameter to be applied to the image data. The quantization parameter predictor is determined using multiple quantization parameters from previously coded neighboring portions. A difference between the current quantization parameter and the quantization parameter predictor is encoded for signaling to a corresponding decoder.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Patent Application Serial No. 61 / 353,365, filed June 10, 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 determining a quantization parameter predictor from a plurality of neighboring quantization parameters. Background technique [0004] Most video applications seek the highest possible perceived quality for a given set of bitrate constraints. For example, in low bitrate applications such as video telephony systems, video encoders provide higher quality by eliminating strong visual artifacts in more visually noticeable and thus more important regions of interest. On the other hand, in high bitrate applications, visually lossless quality is desired everywhere in the picture and the video encoder should ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/34H04N7/36H04N7/50H04N19/593
CPCH04N19/126H04N19/157H04N19/176H04N19/196H04N19/198H04N19/61H04N19/139H04N19/52H04N19/197H04N19/51H04N19/593H04N19/124H04N19/172H04N19/70H04N19/174H04N19/513
Inventor 吕小安J.索尔尹鹏许茜郑云飞
Owner INTERDIGITAL VC HLDG INC