Apparatus for erasing and extracting image data from particular

Details Apparatus for erasing and extracting image data from particular Apparatus for erasing and extracting image data from particular

1988-03-11

1990-10-23

Harkcom, Gary V.

Boots, shoes, and leggings

358452, 358462, 355218, G06F 1566, H04N 138

Patent

active

049657445

ABSTRACT:
An apparatus applicable to a digital copier, a digital printer, a printer using a mimeograph and others for specifying a desired region of an original document by use of a marking sheet, and erasing, extracting or otherwise editing a portion of the image of the original document which lies in the particular region. An image of the marking sheet read by an image scanner are converted into two-level pixel data. The pixel data are reduced in density before written in a memory, such that pixels are extracted, or thinned, one out of each predetermined number of pixels in each of the column and row address directions of the memory. One of two differnt image modes is selected: a text mode with applies MTF (modulation transfer function) processing to a text document, and a graphic mode which applies dither processing or like halftone processing to a graphic document. When the marking sheet is to be read, the text mode is set up automatically.

REFERENCES:
patent: 4078249 (1978-03-01), Lelke et al.
patent: 4665555 (1987-05-01), Alker et al.
patent: 4686579 (1987-08-01), Sakamoto
patent: 4701805 (1987-10-01), Maeshima
patent: 4736310 (1988-04-01), Colthorpe et al.
patent: 4760463 (1988-07-01), Nonoyama et al.
patent: 4775886 (1988-10-01), Hirosawa
patent: 4786976 (1988-11-01), Takao et al.

Affiliated with

Also associated with

Rating

Apparatus for erasing and extracting image data from particular does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for erasing and extracting image data from particular , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for erasing and extracting image data from particular will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-771622