Abstract
New ways of light interaction are being enabled with the advent of light-emitting diodes (LEDs). In this paper, we describe an LED system with LED lamps and an LED array, where the LED array is used to sense color of a source lamp and then transport it to a destination lamp to adapt its color. We present a design prototype of the LED lamps and the LED array in order to realize the dual function of color sensing and illumination. A driving protocol is proposed such that color sensing may be performed, without causing an additional flicker during illumination. Depending on the wavelength selectivity of the LED devices, two methods for color estimation are proposed. Experimental results are presented to evaluate the performance of the proposed estimation method.
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