© Springer Nature Switzerland AG 2020
R. Shamey, R. G. KuehniPioneers of Color Sciencehttps://doi.org/10.1007/978-3-319-30811-1_91

91. Boynton, Robert M. 1924–2006

Renzo Shamey1   and Rolf G. Kuehni1  
(1)
Color Science and Imaging Laboratory, North Carolina State University, Wilson College of Textiles, Raleigh, NC, USA
 
 
Renzo Shamey (Corresponding author)
 
Rolf G. Kuehni
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From Optical Society of America, Obituaries

Robert M. Boynton was born on October 28, 1924, in Evanston, IL. He attended Amherst College in Massachusetts where he received an undergraduate degree. At Brown University in Providence, RI, he received in 1952 his Ph.D. degree in psychology. Soon after, he became an assistant professor of psychology at Rochester University, NY where, in 1963, he founded their Center for Visual Science. In 1974, he moved to the University of California San Diego where he remained until his retirement in 1991, in his final years being the associate dean in the Office of Graduate Studies and Research.

Boynton was the recipient of the OSA Tillyer Medal in 1971, the Frederick Ives Medal in 1995, and the Prentice Medal of the American Academy of Optometry in 1997. In 1981, he was elected a member of the National Academy of Sciences. After his retirement, he concentrated on his hobby, research of baseball, writing articles such as “Three Hours Instead of Five: Playing a 2000 World Series Game at the 1948 Pace” published in the journal “Grandstand Baseball Annual.” Boynton died on September 4, 2006 [1].

91.1 Boynton MacLeod Physiological Color Space

His key activities revolved around experiments providing new information concerning the neurophysiological processes involved in vision and specifically color vision in the eyes and the brain. He is perhaps best known for his book Human color vision of 1979 published in a second, revised edition, co-authored by P. K. Kaiser, published by the Optical Society of America in 1996 [2]. He had a variety of additional research interests, including physiological optics, light adaptation and temporal sensitivity.

In 1968, Boynton and Kaiser developed the minimally distinct border criterion as a third important one in the quantitative assessment of luminance, in addition to flicker photometry and motion photometry. Boynton was interested in developing a psychophysical, colorimetric system based on cone sensitivity functions. In 1972, together with his colleague D. I. A. MacLeod, he proposed a Luther-inspired chromaticity diagram based on normalized cone response functions, with the two axes being L/(L + M) or M/(L + M) and S/(L + M), a system in better agreement with biological facts than the CIE chromaticity system [3]. Figure 91.1 shows the related chromaticity diagram. While widely used in scientific efforts it has not replaced the CIE standards in technology.
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Fig. 91.1

Cone excitation isoluminant chromaticity diagram of the MacLeod and Boynton physiological color space

During his academic career, Boynton authored and co-authored at least 35 important articles on human color vision. From 1982 to 86, he was also the chairman of the board of editors for the journal Vision Research.