Appeal No. 2000-1499
Application No. 08/825,474
been indicated by the examiner to be directed to allowable
subject matter and are not before us on appeal.
The invention is directed to the optimization of coding of
images or sequences of images. More particularly, the invention
relates to the selection of image encoding parameters in
accordance with a perceptual metric derived from analyzing the
contents of the image being coded. One or more encoding
parameters is selected as a result of comparing an original image
to a reconstructed image and processing the comparison results
using a quantitative perceptual difference metric. This metric
represents the fidelity of the reconstructed image and is used to
update the encoding parameters to optimize the coding of the
image.
Distortion in the decoded video for a prescribed bit rate is
minimized by the use of a fidelity measure that is based on human
perception. That is, what is used is a perceptual metric using a
“just noticeable difference” (JND) map where the perceptual
metric represents how a human eye would perceive a reconstructed
image.
Representative independent claim 1 is reproduced as follows:
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