Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1997-06-09
1999-11-23
Hafiz, Tariq R.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
395101, 358518, 358520, 358523, 382167, 382162, H04N 160, G03F 308
Patent
active
059915110
ABSTRACT:
A target output device such as a printer is characterized in a manner that primary colorant amounts can be determined on the basis of a pair of chromaticity coordinates in a chromaticity space having a pair of chromaticity coordinates that span hue and chroma (saturation) and a luminance correlate (monotonic function of luminance). Lightness (or darkness) of the colors is handled largely independently. This makes it possible to store the colorant information in a two-dimensional table indexed by chromaticity coordinates. The information in the table is for colors that are characterized by the highest luminance that the target printer is capable of rendering for a given chromaticity (hue and chroma).
REFERENCES:
patent: 3986202 (1976-10-01), Granger
patent: 4843573 (1989-06-01), Taylor et al.
patent: 4929978 (1990-05-01), Kanamori et al.
patent: 5231504 (1993-07-01), Magee
patent: 5243414 (1993-09-01), Dalrymple et al.
patent: 5309257 (1994-05-01), Bonino et al.
patent: 5313291 (1994-05-01), Appel et al.
patent: 5317425 (1994-05-01), Spence et al.
patent: 5323249 (1994-06-01), Liang
patent: 5450216 (1995-09-01), Kasson
patent: 5463480 (1995-10-01), MacDonald et al.
patent: 5650942 (1997-07-01), Granger
Granger, E.M. et al., "Visual Chromaticity Transfer Functions," 1973 Annual Meeting, Optical Society of America, (Abstract) pp. 1287-1288 (Color II, Contributed Papers (C.J. Bartleson, Presider)).
Granger, E.M., "Subjective Assessment and Specification of Color Image Quality," Image Assessment Spec. Opt. Soc. Am. 1974, pp. 86-92.
Granger, Edward M., "A Summary Measure of Image Quality," SPIE vol. 432 (1983), pp. 340-347.
Granger, Edward M., "Visual Limits to Image Quality," SPIE vol. 528, Digital Image Processing (1985), pp. 95-102.
Granger, E.M., "Uniform Color Space as a Function of Spatial Frequency," SPIE vol. 1913 (1993), pp. 449-461.
Granger, E.M., "Is CIE L*a*b* Good Enough for Desktop Publishing?" SPIE vol. 2170, Device-Independent Color Imaging, pp. 144-148 (Eric Walowit, Chair/Editor; Feb. 7-8, 1994, San Jose, CA).
Granger, E.M., "ATD, Appearance Equivalence, and Desktop Publishing," SPIE vol. 2170, Device-Independent Color Imaging, pp. 163-168 (Eric Walowit, Chair/Editor; Feb. 7-8, 1994, San Jose, CA).
Granger, E.M., "A Constant-Bandwidth Grating-Lens Spectrometer," SPIE vol. 2413, Color Hard Copy and Graphic Arts IV, pp. 333-338 (Jan Bares, Chair/Editor; Feb. 6-10, 1995, San Jose, CA).
Granger, E.M., "Gamut Mapping for Hard Copy Using the ATD Color Space," SPIE vol. 2414, Device-Independent Color Imaging II, pp. 27-35 (Eric Walowit, Chair/Editor; Feb. 7-8, 1995, San Jose, CA).
Benzschawel et al., "ATD: Toward a Uniform Color Space," Color Research & Appl., vol. 9, No. 3, pp. 133-140.
Dam Tuan Q.
Hafiz Tariq R.
Light Source Acquisition Company
LandOfFree
Appearance-based technique for rendering colors on an output dev does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Appearance-based technique for rendering colors on an output dev, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Appearance-based technique for rendering colors on an output dev will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1231976