{'fraction_non_alphanumeric': 0.014827018121911038, 'fraction_numerical': 0.0032948929159802307, 'mean_word_length': 5.4, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Acquisition of multiband polarimetric imagery: calibration considerations

There is evidence that polarimetric as well as intensity contrast differences in images are band-dependent. Some previous evidence is reviewed. We are currently fabricating and testing a hyperspectral imaging polarimeter to assess and to take advantage of subtle spectral detail in hyperspectral polarimetric images. This device uses a tunable liquid crystal filter and a 16-bit camera. New and varied calibration challenges have occurred and are discussed. We consider it important to present the problems as well as the successes.