Image analysis – Image compression or coding
Reexamination Certificate
2003-02-10
2008-12-30
Alavi, Amir (Department: 2624)
Image analysis
Image compression or coding
C375S240000
Reexamination Certificate
active
07471834
ABSTRACT:
Methods for fast generating spatially reduced-size images directly from compressed video streams supporting the coding of interlaced frames through transform coding and motion compensation. A sequence of reduced-size images are rapidly generated from compressed video streams by efficiently combining the steps of inverse transform, down-sampling and construction of each field image. The construction of reduced-size field images also allows the efficient motion compensation. The fast generation of reduced-size images is applicable to a variety of low-cost applications such as video browsing, video summary, fast thumbnail playback and video indexing.
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Chun Seong Soo
Kim Jung Rim
Suh Sungjoo
Sull Sanghoon
Alavi Amir
Jones Day
Pencoske Edward L.
VMark, Inc.
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