Image processing method to reduce marking material coverage in p

Details Image processing method to reduce marking material coverage in p Image processing method to reduce marking material coverage in p

1994-01-05

1996-10-08

Bayerl, Raymond J.

395117, G06F 312

Patent

active

055639852

ABSTRACT:
A method for processing images for printing includes the steps for each separation, making a pixel level determination of marking material coverage, based on the number of pixels within a given area that are turned on; if a determination is made that too much marking material will be placed within the given area, using a random number function for turning off a fraction of pixels in the area to reduce the amount of marking material that will be used for the given area; and to preventing artifacts from occurring in the pixel reduction step by utilizing a processing order through each given area which tends to randomize the turn off effect. Additionally, the results of the determination are compared for each separation, to determine that the turnoff result allows at least one corresponding pixel among each of the separations to be turned ON.

REFERENCES:
patent: 4736315 (1988-04-01), Ozaki et al.
patent: 4930018 (1990-05-01), Chan et al.
patent: 4999646 (1991-03-01), Trask
patent: 5068649 (1991-11-01), Garrett
patent: 5130823 (1992-07-01), Bowers
patent: 5170711 (1992-12-01), Maier et al.
patent: 5237344 (1993-08-01), Tasaki et al.
patent: 5278671 (1994-01-01), Takahashi et al.
patent: 5353387 (1994-10-01), Petschik et al.
J. A. C. Yule; "Principles of Color Reproduction"; J. Wiley & Sons, 1967.
Klassen; "Reducing Ink Coverage Levels in Binary CMYK Images"; Proc. Soc. Imaging Science & Technology; 46.sup.th Annual Conference; May 1993.
T. G. Lewis et al.; "Generalized Feedback Shift Register Pseudorandom Number Alogorithm"; Journal of the Association for Computing Machinery, vol. 20, No. 3, Jul. 1973; pp. 456-468.
H. S. Bright et al.; "Quasi-Random Number Sequences from a Long-Period TLP Generator with Remarks on Application to Cryptography"; Computing Surveys, 11, 4, 1979.

Affiliated with

Also associated with

Rating

Image processing method to reduce marking material coverage in p 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 method to reduce marking material coverage in p, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image processing method to reduce marking material coverage in p will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-63560