Image analysis – Histogram processing – For setting a threshold
Patent
1997-01-21
1999-01-12
Rogers, Scott
Image analysis
Histogram processing
For setting a threshold
382237, 382270, 358456, 358457, 358298, H04N 1405
Patent
active
058599550
ABSTRACT:
A method of halftoning a digitized image is described, in which a "stoclustic" screen is used. The halftone outputs produced by stochastically clustered pixel screens of the present invention (also referred to herein as "stoclustic" screens) are clustered about arbitrarily or otherwise specified centers. According to one embodiment of the present invention, one step in the present invention requires that the locations of the set of stochastically distributed black and white cluster centers must be determined. Thereafter, according to block 104, a dot or pixel growth positioning sequence for adding pixels to the cluster about the selected cluster centers must be established.
REFERENCES:
patent: 4149194 (1979-04-01), Holladay
patent: 4485397 (1984-11-01), Schueter et al.
patent: 4595948 (1986-06-01), Itoh et al.
patent: 4876611 (1989-10-01), Fischer et al.
patent: 5014123 (1991-05-01), Imoto
patent: 5111194 (1992-05-01), Oneda
patent: 5181162 (1993-01-01), Smith et al.
patent: 5341228 (1994-08-01), Parker et al.
patent: 5394252 (1995-02-01), Holladay et al.
patent: 5438431 (1995-08-01), Ostromoukhov
patent: 5489991 (1996-02-01), McMurray
patent: 5598204 (1997-01-01), Harrington
patent: 5673121 (1997-09-01), Wang
patent: 5740279 (1998-04-01), Wang et al.
"Benarization Using a Two-Dimensional Pulse-Density Modulation" by R. Eschbach and R. Hauck, Journal of Optical Society of America A 4, 1873-1878(1987).
"Pulse-Density Modulation in Rastered Media: Combining Pulse-Density Modulation and Error Diffusion" by R Eschbach, Journal of Optical Society of America A, 7, 708-716 (1996).
Rogers Scott
Xerox Corporation
LandOfFree
Stochastically clustered dot halftoning system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Stochastically clustered dot halftoning system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stochastically clustered dot halftoning system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1523577