Conjecture on the Visual Estimation of Relative Radial Motion

@article{Weinberger1971ConjectureOT,
  title={Conjecture on the Visual Estimation of Relative Radial Motion},
  author={H. Weinberger},
  journal={Nature},
  year={1971},
  volume={229},
  pages={562-562}
}
THE ability to estimate accurately the time interval until the juncture of an observer with an object moving with relative radial velocity towards the observer seems to be highly developed in humans and many animals. In many practical situations, of probable importance for survival, it is not the distance of the object from the observer which is of interest, nor is it the velocity of the object, but rather the ratio of the two, which gives the time taken by the object to reach the observer. The… Expand
5 Citations
Failure of Visual Estimation of Motion under Strobe
  • T. Croft
  • Computer Science, Medicine
  • Nature
  • 1971
TLDR
An observation seems to indicate that at least some retinal measurement of rate is necessary in impact estimation. Expand
Visual information of vehicle velocity acquired by pedestrians involved in road crossing accidents.
TLDR
A visual model uses the relationship between the tangential and normal components of the velocity to calculate the distance at which the velocity of the vehicle can be perceived by pedestrians, consistent with the timing at which a vehicle collides with a pedestrian most frequently in pedestrian accidents gleaned from accident statistics. Expand
Visual mechanism determining flight distance in Zebra danios (Brachydanio rerio Pisces).
  • L. Dill
  • Physics, Medicine
  • Nature: New biology
  • 1972
TLDR
It is conjectured that animals may be able to estimate the time to collision with an approaching object in the absence of knowledge of the size, velocity or distance of the object. Expand
The escape response of the zebra danio (Brachydanio rerio) I. The stimulus for escape
TLDR
The hypothesis was tested that zebra danios react to an approaching predator when the rate of change of the angle subtended by the predator at the prey's eye exceeds some threshold level and the reactive field was shown to be circular, demonstrating that the mechanism is not solely a binocular one. Expand
Video Game and Fuzzy Logic to Improve Amblyopia and Convergence Insufficiency
TLDR
This study proposed the development of virtual reality (VR) video game platform, guided through Fuzzy Logic, targeting casualties with amblyopia and Convergence Insufficiency condition, and showed that this program has the potential to be adopted for vision therapy. Expand