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A Goniometric System for Measuring Surface Spectral Reflection Using Two Robot Arms

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This paper proposes a gonio-spectral imaging system for measuring light reflection on an object surface using two robot arms, a multi-band lighting system, and a monochrome digital camera. It can change the incident and viewing angles of surface reflection with four degrees of freedom. The eight-band lighting system allows reliable spectral estimation of surface reflectance. The images captured for various incident and viewing angles are precisely warped as if they were all captured from the same viewing direction. This enables the proposed system to deal with objects with surface texture. Experiments on image warping, three-dimensional reflection measurement and spectral reflectance estimation are conducted for colored and textured objects. The results demonstrate the feasibility of the proposed imaging system.
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Document Type: Research Article

Publication date: January 1, 2006

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  • Started in 2002 and merged with the Color and Imaging Conference (CIC) in 2014, CGIV covered a wide range of topics related to colour and visual information, including color science, computational color, color in computer graphics, color reproduction, volor vision/psychophysics, color image quality, color image processing, and multispectral color science. Drawing papers from researchers, scientists, and engineers worldwide, DGIV offered attendees a unique experience to share with colleagues in industry and academic, and on national and international standards committees. Held every year in Europe, DGIV papers were more academic in their focus and had high student participation rates.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual papers for details.

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