Title:
SYSTEM, IMAGE READER AND COLOR CORRECTING METHOD
Document Type and Number:
Japanese Patent JP3715859
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a system with which the deterioration of color reproducibility due to the secular fluctuation of the characteristic of a light source used in an image reader can be avoided and also mismatching of image quality between the same types of machines of the image readers can be relieved.
SOLUTION: This image reader 100 illuminates a white reference white board by an original illumination lamp 109 when it is started, reads the reference white board illumination by a CCD 101, sets a color correction coefficient used for color correction processing of the masking circuit 154 of an image processor 150 in accordance with a value obtained by reading the reference white board and notifies the processor 150 of the color correction coefficient.
More Like This:
Inventors:
Noriyoshi Latezawa
Application Number:
JP2000026417A
Publication Date:
November 16, 2005
Filing Date:
February 03, 2000
Export Citation:
Assignee:
Canon Inc
International Classes:
G03G15/00; G03G15/01; G06T1/00; G06T5/00; H04N1/04; H04N1/48; H04N1/60; (IPC1-7): H04N1/48; G03G15/00; G03G15/01; G06T1/00; G06T5/00; H04N1/04; H04N1/60
Domestic Patent References:
| JP10224646A | ||||
| JP6014204A | ||||
| JP9046535A |
Attorney, Agent or Firm:
Toshihiko Watanabe