{'fraction_non_alphanumeric': 0.004415011037527594, 'fraction_numerical': 0.0, 'mean_word_length': 5.305555555555555, '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}}
Signal Perturbation Theory Applied to Boundary Detection

This paper is concerned with accurate detection of the location of boundaries of images projected on a discrete array of photosensors or scanned by a television camera. A model is developed for the detection system and it is shown that proper application of a triangular perturbation signal can yield a linear transfer characteristic between the actual boundary location and the detector output.