Computer graphics processing and selective visual display system – Display peripheral interface input device
Patent
1997-02-26
1999-02-09
Nguyen, Chanh
Computer graphics processing and selective visual display system
Display peripheral interface input device
382162, G09G 504
Patent
active
058700773
ABSTRACT:
A computerized method, containable in a computer memory device, is disclosed for tristimulus color space coordinate data nonlinear storage, retrieval, and interpolation, and, more specifically to memory mapping and data interpolation for 24-bit L*H*C* to 24-bit RGB color mapping (three 8-bit words to each coordinate). Predetermined output tristimulus color space coordinate data points are stored in nodes of a memory construct based upon use of input values of a cylindrical-based tristimulus color space coordinate system, where a non-linear selection of stored data points is provided in the memory construct. The number of linear interpolations of each of the coordinates is determined by the number of available bits in each data word after providing sufficient bits to address the surrounding stored nodes. Each coordinate conversion is expedited by caching frequently accessed nodes in an auxiliary cache memory, by node doubling of preselected nodes, and by fetching only relevant adjacent nodes during interpolation.
REFERENCES:
patent: 3983166 (1976-09-01), Pugsley
patent: 4275413 (1981-06-01), Sakamoto et al.
patent: 4477833 (1984-10-01), Clark et al.
patent: 4511989 (1985-04-01), Sakamoto
patent: 4876651 (1989-10-01), Dawson et al.
patent: 5121196 (1992-06-01), Hung
patent: 5170468 (1992-12-01), Shah et al.
patent: 5450216 (1995-09-01), Kasson
patent: 5461712 (1995-10-01), Chelstowski et al.
patent: 5650942 (1997-07-01), Granger
patent: 5666436 (1997-09-01), Eames
patent: 5677967 (1997-10-01), Pariser
patent: 5684981 (1997-11-01), Jones
patent: 5696839 (1997-12-01), Siegeritz
Hung, Color Rendition Using 3-Dimensional Interpolation, 12-13 Jan. 88, pp. 111-115 Imaging Applications in the Work World, SPIE, vol. 900.
Stone et al., Color Gamut Mapping and the Printing of Digital Color Images, Oct., 1988, ACM Transactions on Graphics, vol. 7, No. 4., pp. 249-292.
Paeth, Algorithms for Fast Color Correction, 1989, pp. 169-175 Proc. for the Society for Invormation Display, vol. 30, No. 3.
Ikegami, New Direct Color Mapping Method for Reducing the Storage Capacity of Look-Up Table Memory, 1989, SPIE vol. 1075 Digital Image Processing Applications, pp. 26-31.
Kanamori et al., A novel color transformation algorith and its applications, Image Processing Algorithms and Techniques, 12-14 Feb. 90, SPIE vol. 1244, International Society for Optical Enginner Proceedings, p. 272.
Kanamori et al., Color Correction Technique for Hard Copies by 4-Neighbors Interpolation Method, pp. 73-80, Journal of Imaging Science & Technology, vol. 36, No. 1, Jan./Feb. 1992.
Hung, Colorimetric calibration in electronic imaging devices using a look-up table model and interpolations, Journal of Electronic Imaging, Jan. 1993, vol. 2(1), pp. 53-61.
Gennetten, RGB to CMYK conversion using 3-D barycentric interpolation, SPIE vol. 1909, 1-3 Feb., 1993 Proceedings: Device-Independent Color Imaging and Imaging Systems Integration, pp. 116-126.
Kasson et al., Atetrahedral interpolation technique for color space conversion, Id. @ pp. 127-138.
Kanamori et al., Fast color processor with programmable interpolation by small memory (PRISM); Journal of Electronic Imaging, Jul. 1993, vol. 2(3), pp. 213-224.
Dillinger Paul H.
McDonough Timothy M.
Hewlett--Packard Company
Nguyen Chanh
Suraci John
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