Image processor with improved discrimination between character i

Details Image processor with improved discrimination between character i Image processor with improved discrimination between character i

1989-09-25

1991-03-19

Kostak, Victor R.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358447, H04N 140

Patent

active

050015761

ABSTRACT:
An image processor in which a high-frequency component of image signals is diminished, and a density value of each of the "diminished" image signals is compared with a first reference value in a first comparator. A first classifier is provided for classifying the image signals into a character image and a tonal image based on a signal output from the first comparator. A length or an area of an image signal classified into the tonal image is measured, and a second comparator is provided for comparing the length or area of a measured image signal measured with a second reference value corresponding to a reference length or a reference area. A second classifier is provided for further classifying an image signal below the second reference value from the second comparator into an image signal of the character image.

REFERENCES:
patent: 4194221 (1980-03-01), Stoffal
patent: 4447830 (1984-05-01), Stoffel
patent: 4649422 (1987-03-01), Rauskolbe et al.
patent: 4668995 (1987-05-01), Chen et al.
patent: 4707745 (1987-11-01), Sakano
Japan Electronic Communication Society, vol. J67 B No. 7 (1984) on pages 781 through 788, under the title of "Bilevel Rendition Method for Doc. Incl. Gray-Scale & Bilevel Image" (Nobuji Tetsutani and Hiroshi Ochi).

Affiliated with

Also associated with

Rating

Image processor with improved discrimination between character i 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 processor with improved discrimination between character i, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image processor with improved discrimination between character i will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2014622