Method and device for image processing

Details Method and device for image processing Method and device for image processing

2005-01-04

2005-01-04

Nguyen, Thinh (Department: 2861)

Incremental printing of symbolic information

Ink jet

Controller

C347S043000

Reexamination Certificate

active

06837563

ABSTRACT:
A method and device for image processing free from full loss of an entire vector in a halftone image relatively low in density. An N*N mask matrix is generated for a given density, based on an N*N dither matrix used in an area gradation method which represents a halftone image with binary (bi-level) image data from multi-level image data. In a case of N*N mask matrix relatively low in density, rearrangements on a column and row basis are performed (N*N−1) times to generate (N*N−1) number of N*N mask matrices which are then combined with the original N*N mask matrix to form an (N*N)*(N*N) mask matrix. Thus, for a halftone image relatively low in density, a binary halftone image is generated via the (N*N)*(N*N) mask matrix from multi-level image data.

REFERENCES:
patent: 5136401 (1992-08-01), Yamamoto et al.
patent: 5604597 (1997-02-01), Imai
patent: 61-154364 (1986-07-01), None
patent: 62-35852 (1987-02-01), None
patent: 1-163071 (1989-06-01), None
patent: 2-162871 (1990-06-01), None
patent: 6-339008 (1994-12-01), None
patent: 7-85273 (1995-03-01), None
patent: 10-304202 (1998-11-01), None

Affiliated with

Also associated with

Rating

Method and device for image processing 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 image processing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for image processing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3369477