Image analysis – Color image processing – Color correction
Reexamination Certificate
2005-07-19
2005-07-19
Grant, II, Jerome (Department: 2626)
Image analysis
Color image processing
Color correction
C358S537000, C358S522000, C358S523000, C382S169000
Reexamination Certificate
active
06920245
ABSTRACT:
A color conversion section converts R-, G- and B-image signals input by the reading of a color image on an original to C-, M- and Y-color signals. A histogram producing means of an image processing section produces density histograms of the respective color signals on the basis of the converted C-, M- and Y-color signals. An original type determination means determines a type of the original on the basis of the histogram data signals. A colored background determination means determines a colored background on the basis of the histogram data signals. A background process presence/absence determination means determines whether a background process is to be executed or not, on the basis of an original type determination result signal and a colored background determination result signal. A CPU produces, when it is determined that the background process is to be executed, a background process table using the density histogram values of the respective color signals. A density adjustment means performs density adjustment of the respective color signals input from the color conversion section, on the basis of the background process table.
REFERENCES:
patent: 11-187266 (1999-07-01), None
patent: 2000-83166 (2000-03-01), None
Foley & Lardner LLP
Grant II Jerome
Kabushiki Kaisha Toshiba
Toshiba TEC Kabushiki Kaisha
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