Motion, Pursuit, Fixate, and Distractor (Visual Depth Perception 2)
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This Demonstration shows the retinal motion and pursuit rates for your choice of and in the case of a fixate and distractor on the axis and an observer moving at 6.5 cm/sec (interocular distance per second) to the right on the axis. The observer's eyes are "fixed" on the point (the "fixate" point). "Fixation" means the ray from TextData[""] through the eye node strikes the fovea at the center of the retina (see: Fixation and Distraction (Visual Depth Perception 5)).
Contributed by: Keith Stroyan (March 2011)
Open content licensed under CC BY-NC-SA
This Demonstration is for the case of a fixate and distractor on the axis and an observer moving at speed 6.5 cm/sec (interocular distance per second) to the right on the axis. Additional details of this framework are given in the Demonstration "Motion/Pursuit Law in 1D (Visual Depth Perception 1)". This Demonstration shows a different graphical representation of the dynamic quantities.
If you know , pursuit at speed is given by the formula
at . Once you know and , time zero motion is given by the formula
All the points on the red line have the same M/P ratio and same relative depth. The brown curves have the same and the vertical blue lines have the same .
The eye parameters , , , etc. are described in the Demonstration "Eye Parameters (Visual Depth Perception 6)" in the Related Links.