Image analysis – Image compression or coding – Pyramid – hierarchy – or tree structure
Patent
1995-01-05
1998-03-10
Couso, Jose L.
Image analysis
Image compression or coding
Pyramid, hierarchy, or tree structure
382233, 382237, 235380, G06K 936
Patent
active
057270899
ABSTRACT:
The disclosed method for compressing an image to be stored on a transaction card at one of a plurality of quality levels performs the steps of: a. providing a number of compression codebooks each corresponding to a quality level of the to be compressed image data; b. determining the quality level of the compressed image to be stored on the transaction card; c. determining the compression codebook that best corresponds to the determined quality level of step b; and d. compressing the image with the determined compression codebook. A decompression system is disclosed for processing, the transaction cards having the compressed image data stored thereon at one of a plurality of quality levels by, determining the maximum quality level common to the transaction card and the decompression system; and decompressing the compressed image data at the above maximum quality level. At each quality level of compression/decompression that represented image is of equal size.
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Ellson Richard N.
Ray Lawrence A.
Couso Jose L.
Do Anh Hong
Dugas Edward
Eastman Kodak Company
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