METHOD OF MULTISPECTRAL DECOMPOSITION FOR THE REMOVAL OF OUT-OF-BAND EFFECTS

摘要

A method of multispectral decomposition for the removal of out-of-band effects. A band of a multispectral radiance is measured using at least one optical filter, upon scanning a plurality of original radiances. A spectral range of an integral is partitioned between a maximum cut-off wavelength of the band and a minimum cut-off wavelength of the band into a plurality of sub-ranges. A multispectral radiance vector is generated from the measured band-averaged spectral radiances. The pre-calculated multispectral decomposition transform matrix corresponding to the optical filter and the measured multispectral radiance vector are matrix-multiplied to generate a band-averaged spectral radiances image vector representing a plurality of recovered band-averaged spectral radiances. The plurality of recovered band-averaged spectral radiances is outputted, for example to a display, thereby generating a plurality of recovered radiances free of out-of-band effects and which approximate the plurality of original radiances.