Image analysis – Color image processing – Color correction
Reexamination Certificate
2006-12-12
2006-12-12
Sherali, Ishrat (Department: 2624)
Image analysis
Color image processing
Color correction
C382S237000, C382S252000
Reexamination Certificate
active
07149351
ABSTRACT:
An image processing apparatus having general versatility, for flexible quantization on multivalue image data of two or more colors to image data having a reduced number of bits in correspondence with the number of bits to be quantized, by using an error diffusion scheme. When two color multivalue data are inputted, errors distributed to the position are added to the data and inputted as I′0and I′1into an output determination unit2. The input data I′0and I′1are quantized by using LUTs7-0and7-1into numerical values of less-value representation. The two data from the LUTs7-0and7-1are inputted into an LUT4,as coordinate values in a two-dimensional coordinate system, and two color binarized bit data (total 2 bits) are outputted.
REFERENCES:
patent: 5621546 (1997-04-01), Klassen et al.
patent: 5949965 (1999-09-01), Gondek
patent: 5973803 (1999-10-01), Cheung et al.
patent: 6363172 (2002-03-01), Cheung et al.
patent: 2002/0039118 (2002-04-01), Shibata
patent: 07-193726 (1995-07-01), None
patent: 08-279920 (1996-10-01), None
patent: 09-016756 (1997-01-01), None
patent: 11-10918 (1999-01-01), None
“An Adaptive Algorithm For Spatial Greyscale”,Proceedings of the Society for Information Display(1976) vol. 17, No. 2, 2ndQuarter, pp. 62 and 75-77.
LandOfFree
Image processing apparatus and method, computer program and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Image processing apparatus and method, computer program and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image processing apparatus and method, computer program and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3699648