Perception of fragmented images of three-dimensional objects as the observation angle changes.
Recognition thresholds for incomplete two-dimensional images of three-dimensional objects were measured as the observation angle was changed. A new experimental psychophysical method was developed and programmed for this purpose, this being a modification of the Gollin test, which measures perception thresholds of incomplete outline images. After training to a stimulus alphabet, observers' responses were found to be invariant to changes in the observation angles of three-dimensional objects from 15 degrees to 60 degrees. It is suggested that possible algorithms for the formation of models of three-dimensional images in the human visual system do not operate on the basis of simple section, but involve invariance mechanisms.
Chikhman
V N
VN
I. P. Pavlov Institute of Physiology, Russian Academy of Sciences, 6 Makarov Bank, 199034, St. Petersburg, Russia. niv@pavlov.infran.ru
Shelepin
Y E
YE
Foreman
N
N
Passmore
P
P
Pacemore
P
P
D006801:Humans; D021621:Imaging, Three-Dimensional; D010364:Pattern Recognition, Visual / Q000502:physiology; D014796:Visual Perception / Q000502:physiology*
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