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Rate distortion optimization for inter mode generation for error resilient video coding

An inter-frame mode, video coding technology, used in character and pattern recognition, digital video signal modification, instrumentation, etc.

Inactive Publication Date: 2011-01-26
TSAI SHENG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned shortcomings of current designs for video encoding are only intended to provide a generalization of some of the problems with today's designs, and are not intended to be exhaustive

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  • Rate distortion optimization for inter mode generation for error resilient video coding
  • Rate distortion optimization for inter mode generation for error resilient video coding
  • Rate distortion optimization for inter mode generation for error resilient video coding

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Embodiment Construction

[0027] As discussed in the background art, traditional mode determination algorithms (such as H.264 video coding) as applied to video coding have focused on the optimal selection of intra-modes as opposed to inter-modes and the relationship between intra- and inter-modes optimal switching. However, no conventional system has focused on generating optimal inter-modes at an encoder (eg, for P-frames of H.264), regardless of intra-modes. More specifically, using knowledge about the existing channel condition(s) or statistical assumptions (e.g. packet loss rate), and using motion compensated frames to conceal lost frames at the decoder, no conventional system has therefore dealt with how to generate optimal frames interval mode to enhance error resilience.

[0028] Thus, in contrast to conventional systems that have focused on intra-mode selection, according to the present invention the inter-mode for H.264 is optimally selected for enhanced error resilience. As mentioned, using...

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Abstract

Optimal selection of an inter mode is provided for video data being encoded to achieve enhanced error resilience when the video data is decoded. End to end distortion cost from encoder to decoder for inter mode selection is determined based on residue energy and quantization error. Using the distortion cost function based on residue energy and quantization error, and an optimal Lagrangian parameter, the optimal inter mode is selected for use during encoding for maximum error resilience. The optimal Lagrangian parameter can be set to be proportional to an error-free Lagrangian parameter with a scale factor determined by packet loss rate.

Description

technical field [0001] The present invention relates to rate distortion optimization of selection of inter-modes during video coding for enhanced error resilience. Background technique [0002] Data compression, or source encoding, is the process of encoding information using fewer bits than an unencoded representation would use, generally speaking, using a particular encoding scheme. As in the case of any communication, compressed data communication only works if both the sender and receiver of the information understand the encoding scheme. For example, encoded or compressed data can only be understood if the decoding method is also known or has been known to the recipient. [0003] Compression is useful because it helps reduce the consumption of expensive resources such as hard disk space or transfer bandwidth. Disadvantageously, compressed data must be decompressed for viewing, and this extra processing may be detrimental to some applications. For example, a compressi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/36H04N19/89
CPCH04N19/00781H04N19/00278H04N19/00242H04N19/00266H04N19/00175H04N19/00036H04N19/00351H04N19/176H04N19/147H04N19/172H04N19/61H04N19/109H04N19/166H04N19/19H04N19/65
Inventor 区子廉陈彦
Owner TSAI SHENG GROUP