Correction curve generating method, image processing method,...

Details Correction curve generating method, image processing method,... Correction curve generating method, image processing method,...

2005-09-06

2005-09-06

Tran, Henry N. (Department: 2674)

Computer graphics processing and selective visual display system

Computer graphics processing

Attributes

C345S207000, C345S077000, C348S189000, C348S673000, C348S687000

Reexamination Certificate

active

06940522

ABSTRACT:
It is intended to provided an image processing method, an image display unit, and a storage medium, capable of effecting an appropriate color reproduction even under a change in brightness of external illumination.In an image display unit according to the present invention wherein a desired image processing is applied to inputted image data, an tone reproduction characteristic in a dark surround of the image display unit in a dark surround and an tone reproduction characteristic in a illuminated surround of the image display unit under illumination of a predetermined luminance value are measured by a measuring means and the tone reproduction characteristic in an illuminated surround is approximated to the tone reproduction characteristic in a dark surround in a desired input tone range by a characteristic approximating means. Further, on the basis of the approximated tone reproduction characteristic in an illuminated surround a correction curve is generated by a correction curve generating means and an image processing is performed for input image data on the basis of the generated correction curve.

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