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Multispectral Imaging with Flash Light Sources

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Flash photography is widely used in professional studios due to its high intensities and the resulting short exposure times. However, most multispectral image acquisition systems use continuous light sources. But since flashguns exhibit several advantages over heat light sources, namely high intensities at short firing times, low heat production and small aperture stops, we developed a multispectral flash acquisition system: We use a multispectral camera with a bandpass filter wheel and sequentially acquire grayscale images, which are then combined into a multispectral image. For each filter wheel position, we trigger the flash. The colorimetric analysis of the estimated spectra shows that flash light multispectral imaging performs comparably to a heat light source system, with a mean color error of ΔĒ00 = 1.594. We consider several aspects specific to flash light sources, namely the spectrum, repeat accuracy, illumination uniformity, calibration of the system, interference stripes and synchronization.
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Document Type: Research Article

Publication date: January 1, 2008

More about this publication?
  • 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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