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1 October 2010 Measurement of the optimum surround ratio inducing the highest perceived image contrast
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Much research has shown that perceived image contrast increases as the surround luminance increases, but a number of recent studies reported opposite trends under higher surround luminance levels. We measured the change in perceived image contrast under a wide range of surround luminance levels covering from dark up to 2087 cd/m2. A large-area illuminator was used to illuminate the surround. It consists of 23 dimmable fluorescent lamps and a diffuser. Its maximum luminance is 2087 cd/m2 and could be adjusted to six lower levels. A set of paired comparison experiments was conducted to compare the perception of image contrast under seven different surround luminance levels. The results showed that the perceived image contrast varies with surround luminance and the maximum perceived image contrast is found near a surround ratio (SR) of 1. As SR increases from 0 to 1, the z score is increased, which can be fully expected by the Bartleson and Breneman effect. However, it is drastically decreased in the region of SR > 1; thus, the perceived image contrast is eventually decreased.
©(2010) Society of Photo-Optical Instrumentation Engineers (SPIE)
Ye Seul Baek, Youn Jin Kim, Hong-suk Kim, and Seung-ok Park "Measurement of the optimum surround ratio inducing the highest perceived image contrast," Journal of Electronic Imaging 19(4), 043013 (1 October 2010).
Published: 1 October 2010

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