Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1994-04-13
1997-02-18
Vu, Kim
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358466, 382251, H04N 1407
Patent
active
056046057
ABSTRACT:
A method and device for parallel intralinear halftoning of digitized grey value images divided into lines pixels, including (1) successive thresholding of grey values of the pixels and (2) transportation of a quantization error for each pixel to at least one neighboring pixel still to be thresholded by adjusting the grey value of the at least one neighboring pixel with at least a portion of the quantization error. The halftoning includes: dividing each of the lines of pixels into at least two disparate groups of pixels; separately thresholding each group of pixels within each line; and transporting the quantization error from a pixel of one group to at least one pixel of at least one other disparate group.
REFERENCES:
patent: 5008950 (1991-04-01), Katayama et al.
patent: 5271070 (1993-12-01), Truong et al.
patent: 5307425 (1994-04-01), Otsuka
patent: 5317653 (1994-05-01), Eschbach et al.
patent: 5363210 (1994-11-01), Sasaki et al.
"Using Peano Curves for Bilevel Display of Continuous-Tone Images" (IEEE Computer Graphics & Applications; (May, 1982), pp. 47-52).
"Halftoning Techniques Using Error Correction" (Proceedings of the SID, 27, (1986), pp. 305-308).
Oce'-Nederland, B.V.
Vu Kim
LandOfFree
Method and device for intralinearly halftoning digitized grey va does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and device for intralinearly halftoning digitized grey va, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for intralinearly halftoning digitized grey va will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1605942