Quantization table adjustment

Details Quantization table adjustment Quantization table adjustment

1997-06-24

2000-02-08

Couso, Jose L.

Image analysis

Image compression or coding

G06K 936

Patent

active

060235314

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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