Television – Bandwidth reduction system – Data rate reduction
Patent
1993-07-09
1994-04-19
Kostak, Victor R.
Television
Bandwidth reduction system
Data rate reduction
348424, H04N 713
Patent
active
053051033
ABSTRACT:
A method and apparatus for encoding an original image. The original image is divided into a plurality of regions and a region is selected therefrom for processing. A region energy value is determined in accordance with the magnitudes of the pixels in the selected region. The region energy value is compared to a threshold and a filtered image is formed by selectively zeroing the selected region in accordance with the comparison. The filtered image is resolved into at least one lower resolution image which is encoded. An expanded image is formed in accordance with the encoded lower resolution image, the expanded image being of the same level of resolution as the original image. An image representative of the difference between the original image and the expanded image is encoded at full resolution.
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Golub Daniel H.
Intel Corporation
Kostak Victor R.
Murray William H.
Silverman Carl L.
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