A Comparative Analysis of Spectral Reflectance Reconstruction in Various Spaces Using a Trichromatic Camera System

An analysis is presented of how the space in which principal component analysis is performed can affect the colorimetric and spectral accuracy of spectral reconstruction. The spectral reconstruction is performed using digital counts given by a new concept of spectral image acquisition constituted by a trichromatic camera combined with absorption filters, instead of the traditional monochrome camera and a set of interference filters. The comparison of the spectral reconstruction performance in each space shows the advantages and disadvantages of using alternative spaces rather than reflectance.

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