spectral identification of lighting type and character光谱照明类型和字符的识别.pdf

Sensors 2010, 10, 3961-3988; doi:10.3390/s100403961 OPEN ACCESS sensors ISSN 1424-8220 /journal/sensors Article Spectral Identification of Lighting Type and Character Christopher D. Elvidge 1,*, David M. Keith 2, Benjamin T. Tuttle 3,4 and Kimberly E. Baugh 3 1 Earth Observation Group, Solar and Terrestrial Division, NOAA National Geophysical Data Center , 325 Broadway, Boulder, CO 80305 USA. 2 Marshall Design Inc., Boulder, CO, USA; E-Mail: david.keith@ 3 Cooperative Institute for Research in Environmental Science, University of Colorado, Boulder, Colorado 80303, USA; E-Mails: ben.tuttle@ (B.T.T.); kim.baugh@ (K.E.B.) 4 Department of Geography, University of Denver, Denver, CO, USA * Author to whom correspondence should be addressed; E-Mail: chris.elvidge@; Tel.: +1-303-497-6121; Fax: +1-303-497-6513. Received: 22 February 2010; in revised form: 12 March 2010 / Accepted: 6 April 2010 / Published: 20 April 2010 Abstract: We investigated the optimal spectral bands for the identification of lighting types and the estimation of four major indices used to measure the efficiency or character of lighting. To accomplish these objectives we collected high-resolution emission spectra (350 to 2,500 nm) for forty-three different lamps, encompassing nine of the major types of lamps used worldwide. The narrow band emission spectra were used to simulate radiances in eight spectral bands including the human eye photoreceptor bands (photopic, scotopic, and “meltopic”) plu