Reduced storage of pre-computed difference tables used in color

Details Reduced storage of pre-computed difference tables used in color Reduced storage of pre-computed difference tables used in color

1993-10-04

1997-01-07

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358518, G06F 1500, H04N 146

Patent

active

055925910

ABSTRACT:
An interpolation calculation requires a plurality of difference signals representing the distances to a set of neighboring colors in space. However, at least some of the plurality of difference signals required for interpolation of a color within the boundary defined by the known color and the set of neighboring colors are also required for interpolation of another color within the boundaries defined by a neighboring known color and its set of neighboring known colors. Accordingly, rather than redundantly storing the difference values, a storage and retrieval scheme is used which only stores non-redundant difference signals, and retrieves from addresses associated with neighboring colors the appropriate difference signals for a given interpolation calculations.

REFERENCES:
patent: 2790844 (1957-04-01), Neugebauer
patent: 4060829 (1977-11-01), Sakamoto
patent: 4275413 (1981-06-01), Sakamoto et al.
patent: 4328515 (1982-05-01), Wellendorf
patent: 4477833 (1984-10-01), Clark et al.
patent: 4500919 (1985-02-01), Schreiber
patent: 4511989 (1985-04-01), Sakamoto
patent: 5301016 (1994-04-01), Gehrmann
patent: 5377025 (1994-12-01), Spaulding et al.
patent: 5412766 (1995-05-01), Pietras et al.
Po-Chieh Hung, "Tetrahedral Division Technique Applied to Colorimetric Calibration for Imaging Media", Ahhual Meeting IS&T, NJ, May, 1992, pp. 419-422.
Po-Chieh Hung, "Colorimetric Calibration for Scanners and Media", SPIE, vol. 1448, Camera and Input Scanner System (1991).
Sigfredo I. Nin et al, "Printing CIELAB Images on a CMYK Printer Using Tri-Linear Interpolation", SPIE Proceedings, vol. 1670, 1992, pp. 316-324.
James M. Kasson et al; "A Tetrahedral Interpolation Technique for Color Space Conversion"; presented at IS&T/SPIE Electronic Imaging, Jan., 1993; pp. 1-12.
Kanamori et al; "Fast Color Processor with Programmable Interpolation by Small Memory (PRISM)"; Journal of Electronic Imaging; vol. 2, No. 3, Jul. '93; Bellingham, WA; pp. 213-224.

Affiliated with

Also associated with

Rating

Reduced storage of pre-computed difference tables used in color does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Reduced storage of pre-computed difference tables used in color , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reduced storage of pre-computed difference tables used in color will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1772155