Image processing apparatus and image processing method

Details Image processing apparatus and image processing method Image processing apparatus and image processing method

2008-07-15

2008-07-15

Natnael, Paulos M (Department: 2622)

Television

Image signal processing circuitry specific to television

Brightness control

Reexamination Certificate

active

07400363

ABSTRACT:
An image processing apparatus for performing image processes corresponding to input signals of multiple types, includes a luminance correcting unit that performs correction process on an input signal so as to correct for display luminance, a luminance decreasing unit that multiplies the input signal with a gain smaller than “1”, and a gamma correcting unit that performs gamma correction with a gamma value smaller than “1” on the input signal. The luminance decreasing unit and the gamma correcting unit are combined together to execute a first correction process that decreases a luminance of a highlight portion of an image while maintaining or increasing the luminance of a halftoned portion of the image, and the luminance decreasing unit executes a second correction process that decreases the luminance for substantially overall tone levels of the image.

REFERENCES:
patent: 4489349 (1984-12-01), Okada
patent: 5546134 (1996-08-01), Lee
patent: 5668569 (1997-09-01), Greene et al.
patent: 5926174 (1999-07-01), Shibamiya et al.
patent: 6348931 (2002-02-01), Suga et al.
patent: 6388716 (2002-05-01), Tsuzuki et al.
patent: 6714212 (2004-03-01), Tsuboyama et al.
patent: 6831634 (2004-12-01), Shigeta
patent: 6967687 (2005-11-01), Suga
patent: 7227519 (2007-06-01), Kawase et al.
patent: 7227520 (2007-06-01), Watanabe et al.
patent: 2003/0133019 (2003-07-01), Higurashi et al.
patent: 4-286275 (1992-10-01), None
patent: 5-150729 (1993-06-01), None

Affiliated with

Also associated with

Rating

Image processing apparatus and image processing method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image processing apparatus and image processing method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image processing apparatus and image processing method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2815596