Motion vector using a transform function identification signal
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United States of America Patent
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Dec 16, 1997
Grant Date -
N/A
app pub date -
Oct 13, 1995
filing date -
Oct 13, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A digital picture manipulator processes a video image signal according to a transform function and outputs both a transformed vide image signal and a transform function information signal. A compressed video encoder uses the transform function information signal in simplifying its search algorithms to generate motion vectors to compress the transformed video image signal to produce a compressed video image signal which includes the generated motion vectors. The compressed video image signal may be transmitted to a receiver, where it is decoded using the motion vectors and displayed. The compressed video image signal also may be subsequently decoded for processing by a subsequent digital picture manipulator. The motion vectors used by the decoder together with the transform function information signal from the subsequent digital picture manipulator are combined in a buffer/motion estimator to produce a modified transform function information signal for a subsequent compressed video encoder. The subsequent compressed video encoder compresses the transformed video image signal from the subsequent digital picture manipulator as a function of the modified transform information signal to produce a subsequent compressed video image signal.
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