Method, apparatus and computer program product for...

Image analysis – Color image processing – Color correction

Reexamination Certificate

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Details

Other Related Categories

C382S168000, C382S172000, C358S466000, C358S522000

Type

Reexamination Certificate

Status

active

Patent number

06873729

Description

ABSTRACT:
An image processing apparatus, method and computer program product, wherein a luminance histogram of input image data is generated by the histogram generating section and a polarization degree of the luminance histogram is evaluated by the polarization degree evaluating section in order to determine whether the input image data is in a true backlight condition or in a halation condition. An optimum dynamic range correction and tone curve correction are performed on the input image data based on a result of the above-described determination.

REFERENCES:
patent: 6577751 (2003-06-01), Yamamoto
patent: 6694051 (2004-02-01), Yamazoe et al.
patent: 20020171852 (2002-11-01), Zhang et al.
patent: 20030179398 (2003-09-01), Takano et al.
patent: 20040022434 (2004-02-01), Yamazoe et al.
patent: 63184473 (1988-07-01), None
patent: 04168879 (1992-06-01), None

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