Title:
COLOR CORRECTION METHOD, COLOR CORRECTION DEVICE, AND COLOR CORRECTION PROGRAM
Document Type and Number:
WIPO Patent Application WO/2007/052455
Kind Code:
A1
Abstract:
A color correction method, color correction device, and color correction program for
correcting color balance in consideration of the subject without degrading the
stored color. White color evaluation value calculating means (1) references an
input image and calculates a white color evaluation value. Stored color evaluation value
calculating means (2) references the input image and calculates the ratio of
the impression of the stored color to the input image as a stored color evaluation value.
White color correction gain calculating means (22) calculates the white correction
gain for making the white color evaluation value an achromatic color value. Gain
adjusting means (21) calculates a conversion coefficient which is large when
the stored color evaluation value is small and is small when it is large, adjusts
the white color gain by causing the calculated conversion coefficient to act
on the white color gain, and calculates a conversion correction parameter. Image
conversion means (4) converts the pixel values of the input image according to
the conversion correction parameter, calculates the pixel values after correction, and
creates an output image whose colors are corrected most suitably.
Inventors:
INOUE AKIRA (JP)
Application Number:
PCT/JP2006/320393
Publication Date:
May 10, 2007
Filing Date:
October 12, 2006
Export Citation:
Assignee:
NEC CORP (JP)
INOUE AKIRA (JP)
INOUE AKIRA (JP)
International Classes:
H04N9/73; H04N9/04
Domestic Patent References:
| WO2004098202A1 | 2004-11-11 | |||
| WO2004030373A1 | 2004-04-08 |
Foreign References:
| JP2001069526A | 2001-03-16 | |||
| JP2004172745A | 2004-06-17 |
Attorney, Agent or Firm:
UDAKA, Katsuki (14 Kandasakumacho 1-chome, Chiyoda-k, Tokyo 25, JP)
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