MOTION ESTIMATOR

A motion vector for motion-compensated prediction in an inter-frame differential video coder is derived by comparing each block in a row of a current frame with the corresponding region, and positi onally shifted regions, of a previous frame. The blocks are processed row by row, and scanned in a ver...

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Bibliographic Details
Main Author PARKE, IAN
Format Patent
LanguageEnglish
French
Published 10.11.1998
Edition6
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
PHYSICS
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Summary:A motion vector for motion-compensated prediction in an inter-frame differential video coder is derived by comparing each block in a row of a current frame with the corresponding region, and positi onally shifted regions, of a previous frame. The blocks are processed row by row, and scanned in a vertical column-by-column scan with each of the shifted regions. Two or more rows may be processed at a time. For ~ 7 pixel search, two or four comparison pr ocessors are provided, one (or one pair) processing odd-numbered blocks and the other (or other pair) processing even-numbered block s. For a ~ 15 pixel search, four or eight processors are provided. The vertical scan is provided using a serial FIFO store including eight 8 tap SIPO sections.
Bibliography:Application Number: CA19902053241