27 February 2015 Multispectral imaging: an application to density measurement of photographic paper in the manufacturing process control
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Abstract
In this paper, we present an industrial application of multispectral imaging, for density measurement of colorants in photographic paper. We designed and developed a 9-band LED illumination based multispectral imaging system specifically for this application in collaboration with FUJIFILM Manufacturing Europe B.V., Tilburg, Netherlands. Unlike a densitometer, which is a spot density measurement device, the proposed system enables fast density measurement in a large area of a photo paper. Densities of the four colorants (CMYK) at every surface point in an image are calculated from the spectral reflectance image. Fast density measurements facilitate automatic monitoring of density changes (which is proportional to thickness changes), which helps control the manufacturing process for quality and consistent output. Experimental results confirm the effectiveness of the proposed system.
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Raju Shrestha, Raju Shrestha, Jon Yngve Hardeberg, Jon Yngve Hardeberg, } "Multispectral imaging: an application to density measurement of photographic paper in the manufacturing process control", Proc. SPIE 9405, Image Processing: Machine Vision Applications VIII, 94050G (27 February 2015); doi: 10.1117/12.2083280; https://doi.org/10.1117/12.2083280
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