Quantization table adjustment
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Feb 8, 2000
Issued Date -
N/A
app pub date -
Jun 24, 1997
filing date -
Dec 13, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The method for adjusting quality during image capture includes computing a discrete cosine transform of a digital image to create DCT coefficients. A quantization table is generated that specifies frequency bands to be filtered and the DCT coefficients are digitized using the quantization table. It is preferred that the DCT coefficients be ordered in a zig-zag sequence to facilitate run-length encoding.
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