Processing device, processing method, and non-transitory computer-readable medium program with output image based on plurality of predetermined polarization directions and plurality of predetermined wavelength bands

The present disclosure includes a processing device, a method, and a non-transitory computer-readable medium. The processing device includes circuitry configured to acquire a plurality of images captured in a time series by an image sensor, each of the plurality of images is based on light in one of a plurality of predetermined polarization directions and in one of a plurality of predetermined wavelength bands. The circuitry is further configured to stitch together at least a part of the plurality of images corresponding to a single polarization direction and a single predetermined wavelength band from the plurality of predetermined wavelength bands to generate a composite image.