Method for compressing and extending an image by transforming or

Details Method for compressing and extending an image by transforming or Method for compressing and extending an image by transforming or

1994-10-07

1996-09-03

Couso, Jose L.

Image analysis

Image compression or coding

G06K 936

Patent

active

055531644

ABSTRACT:
Block distortion standards are obtained by considering the non-linearity of the visual sensation on stimulus, the non-linearity of illumination brightness versus voltage in an image display apparatus, the measurement of errors of lightness which is sensed on brightness stimulus by human beings, the discrimination threshold characteristic on lightness of the visual sensation, and brightness ruggedness. The brightness ruggedness is made proximate by brightness dispersion, so that a calculation cost is lowered.

REFERENCES:
patent: 5150432 (1992-09-01), Ueno et al.
patent: 5187755 (1993-02-01), Aragaki
patent: 5212742 (1993-05-01), Normile et al.
patent: 5267334 (1993-11-01), Normile et al.

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