locus of
                                unit monochromats Jim
                                Worthey, Lighting and Color Research
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Jim Worthey • Lighting & Color Research • • 301-977-3551 • 11 Rye Court, Gaithersburg, MD 20878-1901, USA
Jim Worthey's Publications

James A. Worthey, "Vectorial color," Color Research and Application, 37(6):394-409 (December 2012).

James A. Worthey, "Applications of vectorial color," Color Research and Application, 37(6):410-423 (December 2012).

Thanks to Dr. Michael H. Brill, there is also a poem commenting on that article, "Applications of vectorial color:"
Michael H. Brill, “Fit-first to be tied,” Color Research and Application, 37(6):423 (December 2012).

James A. Worthey and Michael H. Brill, "Camera Design Using Locus of Unit Monochromats," Proceedings of the 14th Color Imaging Conference: Color Science and Engineering, Scottsdale, AZ, USA, November 6-10, 2006. Published by IS&T, 7003 Kilworth Lane, Springfield, VA 22151, . (There's a preprint.)

Michael H. Brill and James A. Worthey, "Color Matching Functions When One Primary Wavelength is Changed," Color Research and Application, 32(1):22-24 (2007). (There's a preprint.)

James A. Worthey, "Color matching with amplitude not left out," Proceedings of the 12th Color Imaging Conference: Color Science and Engineering, Scottsdale, AZ, USA, November 9-12, 2004. Published by IS&T, 7003 Kilworth Lane, Springfield, VA 22151, . (There's a preprint.)

James A. Worthey and Michael H. Brill, "Principal components applied to modeling: dealing with the mean vector," Color Research and Application  29(4):261-266, August 2004.

"Color rendering: a calculation that estimates colorimetric shifts," Color Research and Application 29(1):43-56, February 2004.

"Color rendering: asking the question," Color Research and Application 28(6):403-412, December 2003.

"User's manual for lidar target simulator," National Institute of Standards and Technology Publication, NISTIR 6418, March 2000. With some help, I designed the simulator and wrote the software that runs it. The simulator is used around the world.

A book review of Physics-based vision: principles and practice ; the review appeared in Color Research and Application 18(3):221-223, 1993.

"Lighting research and theory can create business prospects," Lighting Design and Application 21(9):14-17 (September 1991).

"Dealing with obvious issues in lighting," Lighting Design and Application 21(8):15-19 (August 1991).

"The role of theory in lighting research and design," Lighting Design and Application 21(7):15-17 (July, 1991).

"Light source area, shading, and glare," presented at the 1990 meeting of the Illuminating Engineering Society, Journal of the IES 20(2):29-36 (Summer 1991).

"Light source size and the stimulus to vision," Topical Meeting on Applied Vision, 1989 Technical Digest Series , Vol. 16, (Optical Society of America, Washington, D.C. 1989) pp.176-179. A short summary of my results on light-source size.

"Lighting quality and light source size," Journal of the IES 19(2):142-148 (Summer 1990).

"Veiling reflections," in Proceedings of Symposium to Honor Gordon Heath , (Indiana University, 1988), pp. 125-143.

"Effect of veiling reflections on vision of colored objects," Journal of the IES 18(2):10-15 (Summer 1989). This article relates the level of veiling reflections to the desaturation of colors and the loss in the range of colors that can be seen.

"Lights of New York harbor," National Bureau of Standards Interagency Report, NBSIR 88-3807, June 1988. This report describes a project to measure the intensity of the background lights (mostly streetlights on shore) seen across the water around New York Harbor at night. The report describes the apparatus, the software, and the principles of photometry involved. It also gives data and some analysis.

"Calculation of metameric reflectances," Color Research and Application 13(2): 76-84 (April 1988). This article describes a method for designing spectral reflectance functions to show metamerism, or not to show it as the case may be. The method gives new insight as well as a simple working method.

"Geometry and amplitude of veiling reflections," Journal of the IES 19(1):49-62 (1989); presented at the August 1988 meeting of the Illuminating Engineering Society of North America. This article deals with two aspects of the veiling reflections problem, through simple models. The first section deals with luminaire size, and the fact that as the luminaire gets larger, it becomes harder to keep from seeing its reflection in reading material. The second section deals with the case where the luminaire image is seen, and relates the washing-out of blacks to the luminaire's size.

"Lighting for color vision," Optics, Illumination, and Image Sensing for Machine Vision II, Donald J. Svetkoff Ed., Proc. SPIE 850, 38-44 (1988).

Belinda L. Collins, Belinda Y. Kuo, Suzin E. Mayerson, J. A. Worthey, and Gerald L. Howett, "Safety color appearance under selected light sources," NBSIR 86-3493, NBS, Gaithersburg MD, 1986.

J. A. Worthey and Michael H. Brill, "Heuristic analysis of von Kries color constancy," J. Opt. Soc. Am. A 3 , 1708-1712 (1986).

"Limitations of color constancy," J. Opt. Soc. Am. A 2, 1014-1026 (1985).

Belinda L. Collins, Suzin E. Mayerson, and J. A. Worthey, "Noticeability of features of secure documents," National Bureau of Standards Interagency Report, NBSIR 85-3160, NBS, Gaithersburg, MD, 1985.

J. A. Worthey and Belinda L. Collins, "Lighting for Meat and Poultry Inspection," Journal of the IES 15 (1):21-28 (Fall 1985).

"An analytical visual clarity experiment," Journal of the IES 15(1):239-251 (Fall 1985).

Belinda L. Collins and J. A. Worthey, "The role of color in lighting for meat and poultry inspection," National Bureau of Standards Publ. NBSIR 84-2829 (March 1984).

"Visual clarity with a black-and-white scene," Journal of the IES 14(2):643-647 (April 1985).

"Opponent-colors approach to color rendering," J. Opt. Soc. Am. 72(1):74-82 (1982).

"Simplified analysis of meridional refraction data," American Journal of Optometry and Physiological Optics 54(11): 771-775 (Nov 1977).

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