Method for sub-sampling in the axis of motion of a sequence of electronic pictures
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United States of America Patent
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Nov 3, 1992
Grant Date -
N/A
app pub date -
Dec 9, 1988
filing date -
Dec 16, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Disclosed is a method to achieve a sub-sampling of pictures, making it possible to optimize the spatial and temporal definition of the compressed signal, so as to enable a most faithful possible reconstruction of the picture received with said compressed picture signal and, if necessary, with complementary assistance data. A field of speed vectors is defined for at least each picture to be sub-sampled, and said pictures to be sub-sampled are sub-sampled by eliminating certain picture points, the preserved picture points being chosen so as to avoid selecting a picture point which corresponds spatially to the approximate projection of a source point preserved during the sub-sampling of the preceding sub-sampling picture, said projection resulting from the application, to said source point, of the associated shift vector.
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