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Direction-adaptive scalable motion parameter coding for scalable video coding

A coding and motion vector technology, applied in the field of motion vector coding, can solve problems such as different effects and no consideration of direction

Inactive Publication Date: 2011-01-19
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] Current methods for joint scaling of motion parameters and video data only consider the magnitude of the motion vector distortion, but not its direction
However, video sequences often exhibit an anisotropic power spectrum such that the effect of vertical and horizontal motion errors can be significantly different
When this happens, the bit allocation between vertical and horizontal motion vector components is suboptimal in existing schemes

Method used

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  • Direction-adaptive scalable motion parameter coding for scalable video coding
  • Direction-adaptive scalable motion parameter coding for scalable video coding
  • Direction-adaptive scalable motion parameter coding for scalable video coding

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Embodiment Construction

[0030] The main difference between the present invention and the prior art is to control the distortion in the vertical and horizontal motion vector components separately. This is achieved by first decomposing the motion vector field into scalar fields corresponding to the individual image dimensions, which are coded separately, resulting in two scalable motion component bitstreams, as figure 2 shown.

[0031] Any scalable image compression technology introduced in the literature can be used to perform scalable encoding on each image component bit stream. In particular, it is best to operate efficiently on motion data using the method described above by Secker and Taubman derived from the recent JPEG2000 image compression standard. In its simplest form, the invention does not involve recombining motion vector components prior to embedded quantization and encoding. Note that this is in contrast to the prior art where the individual motion vectors are jointly embedded quantiz...

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Abstract

A method of encoding motion picture data,, especially using motion compensated 3-D subband coding, wherein first components of the motion vectors from motion compensation are scalably encoded separately or independently of second components of the motion vectors, comprises separate bit-rate-allocation for the first and second components of motion vectors.

Description

technical field [0001] The invention relates to a method and a device for encoding moving picture data in the form of a sequence of pictures. The invention particularly relates to 3D subband coding including spatial and temporal filtering and motion compensation, and to coding of motion vectors. Background technique [0002] In heterogeneous communication networks such as the Internet, efficient video communication must provide a wide range of transmission constraints and video display parameters. Channel bandwidth often varies by several orders of magnitude between different users on the same network. In addition, with the rapid development of network interconnection, devices with different display resolutions and processing capabilities, such as mobile phones, handheld personal digital assistants, and desktop workstations, may access the same digital media content. [0003] Scalable video coding aims to compress the original video content so as to support effective recon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/26H04N7/30H03M7/30H04N7/12H04N7/32H04N19/593
CPCH04N19/00806H04N19/0069H04N7/26398H04N7/34H04N19/00763H04N7/26867H04N19/593H04N19/62H04N19/517
Inventor 安德鲁·塞克
Owner MITSUBISHI ELECTRIC CORP