System and method for extracting spatially reduced image sequences in a motion compensated compressed format
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United States of America Patent
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Aug 22, 2000
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app pub date -
Jun 12, 1997
filing date -
Jun 12, 1997
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Abstract
Given compressed video which supports the coding of interlaced frames through DCT and motion compensation, different construction methods are applied based on select DCT domain coefficients and/or motion vector informations to produce spatially reduced images without decompressing. The spatially reduced images can then be used for video browsing, authoring and processing purposes.
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