Open AccessMonocular location primitives used to evaluate horizontal disparity in local stereopsis
Author(s) -
Valdas Petrauskas,
Henrikas Vaitkevičius,
V. Mildažis
Publication year - 1995
Publication title -
psichologija
Language(s) - English
Resource type - Journals
eISSN - 2345-0061
pISSN - 1392-0359
DOI - 10.15388/psichol.1995.13.9041
Subject(s) - centroid , luminance , monocular , stereopsis , depth perception , artificial intelligence , optics , optometry , computer vision , distribution (mathematics) , perception , mathematics , physics , geodesy , geography , computer science , psychology , medicine , mathematical analysis , neuroscience
Depth perception of two point-like stimuli presented dixoptically was studied as a function of luminance distribution within the pair of stimuli in each half-field. The dots subtended approximately l arcminute and were separated by 3, 4, 5 or 6 arcminutes. The depth changed gradually unless the separation between the stimuli exceeded 4 arcminutes. The depth change cannot be derived solely on the basis of disparity change. The results may be accounted for if assumed that disparity is evaluated by the difference in the weighted mean (centroid) of luminance distribution over corresponding left and right retinal regions.