Color image reproduction system field calibration method and app

Facsimile and static presentation processing – Natural color facsimile – Measuring – testing – and calibrating

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

358518, 358406, H04N 100, H04N 146, G03F 308

Patent

active

054521122

ABSTRACT:
A method of calibrating a color image reproduction system in the field is provided. The color image reproduction system includes a color input scanner for generating a color digital image, a digital image processor for applying a color transform to the color digital image to produce a transformed color digital image and, and a digital color printer for printing the transformed color digital image. The calibration method includes the steps of: a) providing a set of calibration tools developed on a representative system, the tools including a scanning target, a first reference file recording the response of a scanner to the scanning target in the representative system, an image file for producing a test pattern, and a second reference file recording the response of the scanner in the representative system to the test pattern printed on the printer in the representative system; and b) employing the calibration tools to calibrate the color image reproduction system in the field, by: 1) scanning the scanning target in the color scanner to produce a first test file; 2) employing the first test file and the first reference file, to generate a scanner calibration table; 3) sending the image file to the color printer to produce a second test pattern; 4) scanning the second test pattern in the color scanner and processing the output of the color scanner through the scanner calibration table to produce a second test file; and 5) employing the second test file and the second reference file to generate a printer calibration table.

REFERENCES:
patent: 4941038 (1990-07-01), Walowit
patent: 5053866 (1991-10-01), Johnson
patent: 5107332 (1992-04-01), Chan
patent: 5185673 (1993-02-01), Sobol
patent: 5309256 (1994-05-01), Takada et al.
patent: 5335096 (1994-08-01), Shimazaki
patent: 5339176 (1994-08-01), Smilansky et al.
Hewlett Packard, "Using the HP ScanJet IIc Scanner with Microsoft Windows", Nov. 1992, pp. 3-34.
Candela, Ltd., "Candela Color Separation Technology, GCR Description", 1992.
Apple Computer, Inc., "Color OneScanner and OneScanner-User's Guide", 1992.

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

Color image reproduction system field calibration method and app does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Color image reproduction system field calibration method and app, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Color image reproduction system field calibration method and app will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1832744

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