Imaging the point spread function of hyperspectral cameras: the full truth about coregistration error and resolution

Abstract

In hyperspectral imaging, the integrity of the spectral signal is critical in order to satisfy the requirements inherent in spectral image processing. There is a need to establish methods for measuring and quantifying band-to-band coregistration errors in the point spread function, as a supplement to customary resolution specifications. The IEEE P4001 working group is creating a standard for hyperspectral imaging which will include metrics for such imperfections. In this work, we discuss a measurement technique that characterizes a hyperspectral camera by creating an image of the point spread function in each band, building on earlier results [