Abstract：
:To determine the physical size and global three-dimensional (3-D) shape of an object, retinal size and retinal disparity have to be scaled in accordance with the object's distance. We examined whether the distance used for scaling retinal disparity is the same as the distance used for scaling retinal size. Subjects adjusted the 3-D shape (size and depth) of a computer-simulated ellipsoid to match a tennis ball. Analysis of the errors when only the ellipsoid was visible in an otherwise completely dark room suggests that the distance used for scaling retinal disparity is indeed the same as that used for scaling retinal size. This was confirmed by showing that the correspondence between the distance used for scaling retinal disparity and that used for scaling retinal size does not improve when more information about distance is available (room lights on), although both distances are then much closer to the simulated distance. Finally, we show that this correspondence is not due to the use of distance-invariant higher order binocular information.
journal_name
Vision Resjournal_title
Vision researchauthors
van Damme W,Brenner Edoi
10.1016/s0042-6989(96)00213-1subject
Has Abstractpub_date
1997-03-01 00:00:00pages
757-64issue
6eissn
0042-6989issn
1878-5646pii
S0042-6989(96)00213-1journal_volume
37pub_type
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