Determining target luminance value of an image using...

Details Determining target luminance value of an image using... Determining target luminance value of an image using...

2009-01-30

2011-10-11

Tieu, Benny (Department: 2625)

Facsimile and static presentation processing

Natural color facsimile

Color correction

C348S234000, C358S003230, C358S500000, C382S167000

Reexamination Certificate

active

08035871

ABSTRACT:
A bright luminance value, a dark luminance value, and an average luminance value relating to a face image portion included in an image represented by fed image data are calculated in calculating circuits. Further, a target bright luminance value and a target dark luminance value are calculated in a calculating circuit on the basis of a target average luminance value and a dynamic range that are inputted from an input device and the calculated bright luminance value, dark luminance value, and average luminance value. Interpolation processing based on a correspondence between the calculated bright luminance value, dark luminance value, and average luminance value relating to the face image portion and the target bright luminance value, the target dark luminance value, and the target average luminance value respectively corresponding thereto is performed in a corrected value calculating circuit, to create a look-up table.

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