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Image data compression employing optimal subregion compression

  • US 6,792,151 B1
  • Filed: 11/24/1999
  • Issued: 09/14/2004
  • Est. Priority Date: 11/24/1999
  • Status: Expired due to Term
First Claim
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1. A method for compressing image data from an uncompressed image data stream, the method comprising the steps of:

  • (a) receiving the uncompressed image data stream;

    (b) analyzing the uncompressed image data stream by contiguous subregions to identify from a plurality of compression algorithms a compression algorithm that permits optimal lossless compression of each subregion;

    (c) selecting an optimal data compression algorithm for each subregion based upon the analysis performed in step (b); and

    (d) compressing the image data stream by subregion based upon the selected algorithms.

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