Image processing apparatus for selectively using MTF correction

Details Image processing apparatus for selectively using MTF correction Image processing apparatus for selectively using MTF correction

1995-12-29

1998-03-03

Stoll, Thomas L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358519, 348254, 348674, 382162, 382251, H04N 5202

Patent

active

057241589

ABSTRACT:
An image processing apparatus includes MTF correction part for converting an input multilevel image signal obtained via raster scanning into an output multilevel image signal through an MTF correction process, a first bi-level rendition part for performing a bi-level rendition process with respect to the output multilevel image signal so that a first bi-level image signal is produced, a second bi-level rendition part for performing a pseudo halftone rendition process with respect to the input multilevel image signal to generate a second bi-level image signal, a discrimination part for detecting whether a target pixel indicated by the input multilevel image signal is located in a halftone region of an original image or in a bi-level region thereof, and an image synthesizing part for outputting the first bi-level image signal to an output device when the target pixel is detected as being located in the bi-level region, and for outputting the second bi-level image signal to the output device when the target pixel is detected as being located in the halftone region.

REFERENCES:
patent: 4817181 (1989-03-01), Kamiya
patent: 4827433 (1989-05-01), Kamon
patent: 4875104 (1989-10-01), Kamon
patent: 4953013 (1990-08-01), Tsuji et al.
patent: 4965744 (1990-10-01), Wagatsuma et al.
patent: 5031035 (1991-07-01), Abe
patent: 5131059 (1992-07-01), Kobayashi
patent: 5250948 (1993-10-01), Berstein et al.
patent: 5267330 (1993-11-01), Masuda
patent: 5550647 (1996-08-01), Koike

Affiliated with

Also associated with

Rating

Image processing apparatus for selectively using MTF correction 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 processing apparatus for selectively using MTF correction , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image processing apparatus for selectively using MTF correction will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2253687