Image analysis – Color image processing – Color correction
Reexamination Certificate
2006-05-16
2006-05-16
Johns, Andrew W. (Department: 2621)
Image analysis
Color image processing
Color correction
C382S299000
Reexamination Certificate
active
07046845
ABSTRACT:
A method for compensating for dot gain in printing with stochastic screens comprises obtaining continuous tone CMYK files and screening the files at a resolution that is lower than the resolution of an output device that will be used to print the files. The lower resolution stochastically screened files are then expanded to the resolution of the output device, thereby effectively increasing the size of the dots by creating a number of subdots for each dot in the lower resolution stochastically screened files. Subdots within the expanded stochastically screened files can then be selectively removed to compensate for dot gain. In addition, overlapping dots in the screened CMYK files are removed and additional stochastically screened files are created that print a dot of a color of the previously overlapping dots and at the location of the previously overlapping dots to prevent colors from running together when printing on certain media. Finally, the removal of subdots in the expanded CMYK files can be performed to correct the color of the images when the expanded stochastically screened file is printed.
REFERENCES:
patent: 5363318 (1994-11-01), McCauley
patent: 5640254 (1997-06-01), Sexton
patent: 5677093 (1997-10-01), Delabastita et al.
patent: 5687300 (1997-11-01), Cooper
patent: 5796929 (1998-08-01), Shu et al.
patent: 5818604 (1998-10-01), Delabastita et al.
patent: 5872896 (1999-02-01), Li et al.
patent: 6118935 (2000-09-01), Samworth
patent: 6330075 (2001-12-01), Ishikawa
patent: 6540328 (2003-04-01), Yashima et al.
patent: 0 661 869 (1995-07-01), None
patent: 0 734 151 (1996-09-01), None
patent: 0 762 734 (1997-03-01), None
Alavi Amir
Christensen O'Connor Johnson & Kindness PLLC
Johns Andrew W.
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