Image analysis – Color image processing
Reexamination Certificate
2005-06-01
2009-11-03
Werner, Brian P (Department: 2624)
Image analysis
Color image processing
C382S254000, C382S273000, C382S274000, C345S589000
Reexamination Certificate
active
07613338
ABSTRACT:
A method and apparatus obtains an image of a proper brightness in various scenes in which it is difficult to appropriately determine the brightness of an image. The apparatus includes a unit which extracts luminance components from image data, a unit which obtains on a predetermined scale the distribution of the extracted luminance components, a unit which sets a middle luminance value for the image data, corrects a luminance value larger than the middle luminance value in the converted luminance distribution to decrease a luminance value before scale conversion that corresponds to the larger luminance value, and corrects a luminance value smaller than the middle luminance value to increase a luminance value before scale conversion that corresponds to the smaller luminance value, and a unit which reproduces the image data by using the enhanced luminance distribution as a new image luminance distribution.
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Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Torres José M
Werner Brian P
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