Apparatus and method for descreening

Facsimile and static presentation processing – Natural color facsimile – Specific image-processing circuitry

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

358525, 358528, 358536, 382 47, 382 54, H04N 146

Patent

active

053846486

ABSTRACT:
Apparatus and method for descreening and for performing resolution changes and correction of misregistration on a color half-tone image in order to produce a color continuous tone image. The apparatus includes filter apparatus for removing screen information from the half-tone image including a plurality of different filters each providing interpolation and screen removal functions and a controller for selecting per pixel of the continuous tone image and in accordance with sensed misregistration and as a function of desired resolution changes, one of the filters for operation on a neighborhood of the pixel.

REFERENCES:
patent: 455459 (1985-11-01), Ciarciello
patent: 3885224 (1975-05-01), Klahr
patent: 4082429 (1978-04-01), Ward
patent: 4082431 (1978-04-01), Ward
patent: 4231656 (1980-11-01), Dickey
patent: 4259694 (1981-03-01), Liao
patent: 4288821 (1981-09-01), Lavallee
patent: 4326252 (1982-04-01), Kohno
patent: 4403258 (1983-09-01), Balzan
patent: 4516175 (1985-05-01), Jung
patent: 4680720 (1987-07-01), Yoshii
patent: 4907096 (1990-03-01), Stansfield
patent: 4941185 (1990-07-01), Reed
patent: 4942480 (1990-07-01), Shu
patent: 4975784 (1990-12-01), Sciaretta
patent: 4987496 (1991-01-01), Grievenkamp
patent: 5027078 (1991-06-01), Fan
patent: 5045931 (1991-09-01), Sakamoto
patent: 5131059 (1992-07-01), Kobayashi
patent: 5140441 (1992-08-01), Sugiura
patent: 5278678 (1994-01-01), Harrington
J. C. Stoffel, et al., "A Survey of Electronic . . . " IEEE Trans. of Comm., vol. Com29, No. 12, Dec. 81.
A. V. Oppenheim et al., "Digital Signal Processing", Prentice-Hall, 1975, pp. 239-250.
R. C. Gonzalez et al., "Digital Image Processing", Addison-Wesley, 1977, pp. 218-233.
W. K. Pratt, "Digital Image Processing" John Wiley and Sons, 1978, pp. 93-120, 278-282.
Olof Brynsdahl, "Halftone Images: Spatial . . . " J. Opt. Soc. Am. vol. 68, No. 3, Mar. 1978.
L. R. Rabiner et al., "Theory and Application . . . ", Prentice-Hall, Inc., 1975.
F. J. Harris, "On the Use of Windows . . . " Proc. of the IEEE, vol. 66, No. 1, Jan. 1978 pp.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Apparatus and method for descreening 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 and method for descreening, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for descreening will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1471534

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.