Title:
画像処理装置
Document Type and Number:
Japanese Patent JP4447035
Kind Code:
B2
Abstract:
A maximum and minimum color information detector detects a maximum color-signal gradation level or a value equivalent to the maximum gradation level and a minimum color-signal gradation level or a value equivalent to the minimum gradation level as color information for an image signal input to the image processing apparatus, a correction parameter generator sets correction parameters according to the color information about the input image signal, and a gradation corrector corrects the gradation scale of each color component of the input image signal according to the correction parameters. Contrast can thereby be improved without excessive color collapse.
Inventors:
Hideki Yoshii
Jun Someya
Jun Someya
Application Number:
JP2007330149A
Publication Date:
April 07, 2010
Filing Date:
December 21, 2007
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H04N9/68
Domestic Patent References:
| JP63177679A | ||||
| JP2003333368A |
Attorney, Agent or Firm:
Minoru Maeda
Youichi Yamagata
Youichi Yamagata