Method and apparatus for coding moving image and medium for recording program of coding moving image
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United States of America Patent
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May 4, 2004
Grant Date -
N/A
app pub date -
Dec 15, 1999
filing date -
Dec 24, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and an apparatus for coding a moving image, capable of obtaining high image quality and high rate of data compression, are provided. The method compares a pixel block of current image to be coded and a pixel block of preceding image within a predetermined region of preceding frame, one after another. The method seeks a specific preceding-image pixel block minimizing matching error. If the matching error relative to the specific preceding-image pixel block exceeds an acceptable value, than the method obtains one or more of orthogonal base systems for approximating AC component vector in the current-image pixel block by inter-frame adaptive orthogonal transformation having, as nest thereof, preceding image data within a predetermined region including the specific preceding-image pixel block. The method thereby codes the moving image data.
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