Heading backward: Perceived direction of movement in contracting and expanding optical flow fields
نویسندگان
چکیده
منابع مشابه
Heading direction of a mobile robot from the optical flow
If a camera, mounted on a mobile robot, moves on a straight line, the optic flow field is a diverging vector field, of which the singularity is called “focus of expansion” (FOE). An object that is seen in this FOE is located on the future path of the camera. However, a mobile robot usually moves on a curved path such that the future path is no longer a point in the image domain, but a line. All...
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Five experiments examined circular heading perception with optical flows that departed from the canonical form. Noncanonicity was achieved through nonrigidity of the environment (Experiments 1 and 2), oscillations of the point of observation (Experiment 3), and the bending of light (Experiments 4 and 5). In Experiments 1 and 2, perception was impaired more by nonrigidity of the ground plane tha...
متن کاملComputation of Heading Direction from Optic Flow in Visual Cortex
We have designed a neural network which detects the direction of egomotion from optic flow in the presence of eye movements (Lappe and Rauschecker, 1993). The performance of the network is consistent with human psychophysical data, and its output neurons show great similarity to "triple component" cells in area MSTd of monkey visual cortex. We now show that by using assumptions about the kind o...
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ژورنال
عنوان ژورنال: Psychonomic Bulletin & Review
سال: 1997
ISSN: 1069-9384,1531-5320
DOI: 10.3758/bf03214342