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Method and apparatus for sub-pixel motion estimation

A motion estimation and pixel technology, applied in image communication, parts of color TV, parts of TV system, etc.

Inactive Publication Date: 2004-09-29
GENERAL INSTR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it is possible to apply a fast ME algorithm to full-pixel ME, the complexity of performing a full-search sub-pixel ME at this level for most encoders is extremely significant

Method used

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  • Method and apparatus for sub-pixel motion estimation
  • Method and apparatus for sub-pixel motion estimation
  • Method and apparatus for sub-pixel motion estimation

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Embodiment Construction

[0022] The specific description provided is only a preferred exemplary embodiment, and is not intended to limit the scope, applicability or configuration of the invention. The presented detailed description of the preferred exemplary embodiment will, of course, provide those skilled in the art with an enabling description for implementing a preferred embodiment of the invention. It being understood that various changes may be made in the function and arrangement of elements without departing from the spirit and scope of the invention as set forth in the appended claims.

[0023] In general, the present invention provides a method for combining the above by discarding figure 1Improved motion estimation process for redundant search points between various full-pixel and sub-pixel searches in the first, second and third tasks of the baseline method. The matching costs of modules or submodules for each such redundant search point are not calculated, and therefore not stored. For ...

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Abstract

The methods and apparatus is for sub-pel motion estimation of a block of pixels. Search points which are redundant between the various full pel and sub-pel searches during the motion estimation process of a block of pixels are disregarded. Matching costs for the block or sub-block at each such redundant search point are not calculated and therefore are not stored.

Description

technical field [0001] The present invention generally relates to compression of digital data. More specifically, the present invention relates to methods and apparatus for providing sub-pixel motion estimation for encoding a digital video signal. Background technique [0002] In digital television systems and their analogs large amounts of digital data must be transmitted. A digital television signal includes video, audio, and other data (such as electronic television program guide (EPG) data, and the like). In order to provide for efficient playback of these digital signals, it is advantageous to compress the digital signals to minimize the amount of data that must be transmitted. [0003] The video portion of the television signal comprises a sequence of video "frames" which collectively provide a moving picture. In digital television systems, digital data bits, or pixels (also referred to herein as "pixels"), define the rows of a video frame. Each video frame consist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/14H04N7/26
CPCH04N19/006H04N19/0063H04N5/145H04N19/53H04N19/523
Inventor K·潘努索庞D·M·贝隆
Owner GENERAL INSTR CORP
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