{'fraction_non_alphanumeric': 0.019969278033794162, 'fraction_numerical': 0.0, 'mean_word_length': 5.721649484536083, '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}}
Perceptual Quality of Color Images of Natural Scenes Transformed in CIELUV Color Space

Transformations of digitized color images in perceptually-uniform CIELUV color space and their perceptual relevance were investigated. Chroma veriation was chosen as the first step of a series of investigations into possible transformations (including lightness, hue-angle, chroma, ect.) To obtain the information about the perceptual consequences of the chosen transormations, perceptual image quality, naturalnessm and colorfoulness were measured by means of scaling. the results suggest that in general a more colorful image than the original one is preferred.