Brightness correction for image

Details Brightness correction for image Brightness correction for image

2004-05-14

2009-02-03

Misleh, Justin P (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

Reexamination Certificate

active

07486312

ABSTRACT:
A CPU200determines whether or not a picked up image that corresponds to image data is a backlit portrait image by analyzing the image data on a pixel-by-pixel basis, and if the picked up image that corresponds to the image data is determined to be a backlit portrait image, then executes a brightness correction for backlit portrait image. The CPU200obtains a tone curve that may have an output value of a predetermined value FV as an output value in response to an input value of a flesh-colored pixel average luminance value PV ave, which is an average luminance value of flesh-colored pixels of all pixels that constitute the image data. The CPU200applies the tone curve to the luminance of every pixel in the image data and thereby executes the brightness correction.

REFERENCES:
patent: 6694051 (2004-02-01), Yamazoe et al.
patent: 6845181 (2005-01-01), Dupin et al.
patent: 6873729 (2005-03-01), Matsushima et al.
patent: 10-079885 (1998-03-01), None
patent: 11-120325 (1999-04-01), None
Abstract of Japanese Patent Publication No. 10-079885, Pub. Date: Mar. 24, 1998, Patent Abstracts of Japan.
Abstract of Japanese Patent Publication No. 11-120325, Pub. Date: Apr. 30, 1999, Patent Abstracts of Japan.

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