Image reduction with fine-line protection

Details Image reduction with fine-line protection Image reduction with fine-line protection

1992-02-11

1997-10-21

Vu, Kim

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

382258, 382298, H04N 1393

Patent

active

056802250

ABSTRACT:
A binary image reducing method is so adapted that image reduction in which the occurrence of discontinuous lines is eliminated, is made possible even when there is a change in the reduction magnification of an image containing many lines of one-pixel width and characters or the like composed of line elements having a width of one to several pixels, such as an image created by a computer. First, an original image is subjected to enlargement processing by a micro-enlarging circuit, whereby the image is enlarged by 2.times.p (where, and the reduction ratio is p). Thereafter, 1/2 reduction processing, of the type which preserves fine lines, is executed by a 1/2 reducing circuit. As a result, it is possible to achieve a change in reduction at any desired magnification of 1/2-1 as well as preservation of fine lines in the reduced image obtained. In another embodiment, an original image is subjected to enlargement processing by a micro-enlarging circuit, after which reduction processing, of a type which preserves fine lines, is executed by a repetitive reducing circuit in response to a command from a decision unit. As a result, it is possible to achieve a change in reduction at any desired magnification of 0.about.1 as well as preservation of fine lines in the reduced image obtained.

REFERENCES:
patent: 4290084 (1981-09-01), Minshull et al.
patent: 4503469 (1985-05-01), Kato
patent: 4682243 (1987-07-01), Hatayama
patent: 4930021 (1990-05-01), Okada
patent: 5083216 (1992-01-01), Abuyama
patent: 5159468 (1992-10-01), Yoshida et al.
patent: 5270836 (1993-12-01), Kang
patent: 5301248 (1994-04-01), Takanori et al.
patent: 5335295 (1994-08-01), Ferracini et al.

Affiliated with

Also associated with

Rating

Image reduction with fine-line protection 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 reduction with fine-line protection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image reduction with fine-line protection will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1011218