Method for the encoding of data for assistance in the reconstruction of a sub-sampled moving electronic image
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United States of America Patent
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Dec 25, 1990
Grant Date -
N/A
app pub date -
Jun 21, 1989
filing date -
Jun 24, 1988
priority date (Note) -
Expired
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Abstract
A method for encoding data for assistance in the reconstruction of sub-sampled moving electronic images, particularly HDTV images transmitted by MAC channel, optimizing the representation of the assistance data while minimizing the corresponding throughput of data through compression of the image signal by segmentation of the image into homogeneous blocks of different sizes. An imbricated, hierarchical encoding is achieved on the image blocks, for assigning to the blocks a choice of processing, on the one hand, and a motion vector, on the other hand. When the sub-sampling/reconstruction processing chosen is of the motion compensation type (way 4) and wherein assistance data are generated under the control of a sequencer locked into a pre-determined image scanning procedure, segmentation information is selectively generated solely for the non-elementary blocks, and information on choice of motion vector is selectively generated only during the occurrence of a block with optimal processing by motion compensation.
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