Image coding method and apparatus and image decoding method and apparatus
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United States of America Patent
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May 1, 2007
Grant Date -
Apr 10, 2003
app pub date -
Jul 23, 2002
filing date -
Jul 26, 2001
priority date (Note) -
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Abstract
An image processing method and apparatus for encoding and decoding image data in which the coding and decoding method may be simplified based on factors such as processing speed requirements. In encoding, an image input unit receives a first image and a second image (key frames). A matching processor begins performing a multiresolutional analysis using pixel-by-pixel matching between the images but, due to predetermined factors or settings, either discontinues the analysis or switches to a simplified method of analysis prior to the final resolution level. If the analysis is discontinued during encoding (i.e. at the encoding side), the analysis may be completed at the decoding side prior to conducting the decoding and the decoding side may be arranged accordingly.
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