Method for estimating reflectance

Details Method for estimating reflectance Method for estimating reflectance

2007-07-23

2011-10-11

Toatley, Gregory J (Department: 2877)

Optics: measuring and testing

Of light reflection

C356S446000

Reexamination Certificate

active

08035817

ABSTRACT:
A reflectance of a color shifted painting color is also measured conveniently.A first reflectance R(αa) of a first reflected light Vainside an incident plane A is measured, and a first locus l of termini of first bisection vectors Ha(|Ha|=|R(αa)|), which displaces two-dimensionally inside the incident plane A, is determined. A second reflectance R(αb) of a second reflected light Vboutside the incident plane A is measured, and a second locus m of termini of second bisection vectors Hb(|Hb|=|R(αb)|), which displaces three-dimensionally outside the incident plane A, is measured. A locus n (x, y, zi) of a terminus of a bisection vector Hion a plane z=z that is parallel to a plane under measurement is approximately modeled with a numerical equation showing an ellipse from the first locus l and the second locus m, thereby determining an approximation model equation, and an overall locus n′ (x, y, z) of the overall termini of bisection vectors H′ of reflected lights V′ other than the first reflected light Vaand the second reflected light Vbis approximately determined.

REFERENCES:
patent: 4572672 (1986-02-01), Orchard et al.
patent: 5502799 (1996-03-01), Tsuji et al.
patent: 6249751 (2001-06-01), Asaba et al.
patent: 2003/0193669 (2003-10-01), Takagi
patent: 2006/0092412 (2006-05-01), Doshoda et al.
patent: 1766577 (2006-05-01), None
patent: 0087222 (1983-08-01), None
patent: 1 353 156 (2003-10-01), None
patent: 58-148942 (1983-09-01), None
patent: 5-322655 (1993-12-01), None
patent: 11-230831 (1999-08-01), None
patent: 2003-307456 (2003-10-01), None
patent: 2006-153846 (2006-06-01), None
patent: WO 2004/097383 (2004-11-01), None
Takagi, A., et al., “Prediction of Spectral Reflectance Factor Distribution of Automotive Paint Finishes,” Color Research and Application, vol. 30, No. 4, Aug. 2005, pp. 275-282.
Takagi, A., “Prediction of Spectral Reflectance Factor Distribution of Color-Shift Paint Finishes,” Color Research and Application, vol. 32, No. 5, Oct. 2007, pp. 378-387.
Li, H., et al., Automated three-axis gonioreflectometer for computer graphics applications, Proceedings of the SPIE—The International Society for Optical Engineering SPIE—The International Society for Optical Engineering USA, vol. 5878, 2005, pp. 58780S-1-69890S-11.
Jafolla, J., et al., “Phenomenological BRDF Modeling for Engineering Applications,” Proceedings of the International Society for Optical Engineering, vol. 3141, Jan. 1, 1997, pp. 281-292.
Germer, T., et al., “Ray model of light scattering by flake pigments or rough surfaces with smooth transparent coatings,” Applied Optics, vol. 43, No. 6, Feb. 20, 2004, pp. 1266-1274.
Extended European Search Report for EP Appl. No. 07791148.5, dated Nov. 18, 2010.
International Preliminary Report on Patentability, mailed Jan. 27, 2009, for PCT/JP2007/064415.

Affiliated with

Also associated with

Rating

Method for estimating reflectance does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for estimating reflectance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for estimating reflectance will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4257187