A looming-recession threshold.
When the origin of magnification-minification of an outline rectangle had a horizontal locus which exceeded one-fourth of the rectangle's horizontal dimension, 16 observers of 21 reported apparent depth characteristic of looming and recession.
Steele
K M
KM
Appalachian State University, USA.
Stritto
M E
ME
Brigner
W L
WL
D000328:Adult; D003867:Depth Perception; D005260:Female; D006801:Humans; D008297:Male; D009949:Orientation; D010364:Pattern Recognition, Visual; D011594:Psychometrics; D012684:Sensory Thresholds; D012858:Size Perception