Dataset and stimuli: Perception of saturation in natural objects

<strong>This dataset contains observer data and stimulus information for the below publication. Refer to this manuscript for more details.</strong> Laysa Hedjar, Matteo Toscani, and Karl R. Gegenfurtner, "Perception of saturation in natural objects," Journal of the Optical Society of American A <strong>40</strong>(3), A190-A198 (2023), doi:10.1364/JOSAA.476874. Participant data is available in two files: <em>fruit_pt_data.csv </em>and <em>blob_pt_data.csv</em> <em>fruit_pt_data.csv</em>: fruit name: name of fruit pair object or swatch: whether the stimulus pair were whole objects or 8x8 swatches participant ID: given participant identification number proportion positive: proportion of trials in which participant chose the positive stimulus as more saturated (out of 10 total trials per stimulus pair) <em>blob_pt_data.csv</em>: blob hue (radians - LAB): hue in radians of the blob pair, as defined in LAB-LCH color space object or swatch: whether the stimulus pair were whole objects or 8x8 swatches matched or unmatched: whether the stimulus pair were matched in terms of blob ID (refers to spatial configuration) positive stimulus ID: identification number of the positive LC-slope stimulus (refers to spatial configuration) negative stimulus ID: identification number of the negative LC-slope stimulus (refers to spatial configuration) note that the above two IDs should be identical if the stimulus is a 'matched' pair participant ID: given participant identification number proportion positive: proportion of trials in which participant chose the positive stimulus as more saturated (out of 5 total trials per stimulus pair) Stimuli pngs are in the zip file s<em>timuli.zip</em>. Pngs are not gamma-corrected. Blob and fruit stimulus sets are separated by folder; object and swatch stimulus sets are also separated by folder. Fruit pngs are labeled: fruit_[object/swatch]_[fruitName]-[negative/positive].png For blob pngs, six possible spatial configurations for each hue were used. An ID was given for each configuration. Blob pngs are labeled: blob_[object/swatch]_hue[hueInRadians]_ID[1-6]-[negative/positive].png Statistics of the stimulus images are presented in the files <em>fruit_stats_objects.csv</em>, <em>fruit_stats_swatches.csv</em>, <em>blob_stats_objects.csv</em>, and <em>blob_stats_swatches.csv</em>. Each column represents a different stimulus image. Each row represents a different statistic taken across the distribution of pixels. Calculations were made in CIELAB-LCH color space ('white point' defined as white of monitor: CIE1931 xyY 0.3328, 0.3343, 142.35).