Motion/Pursuit Ratio and Depth in 1D (Visual Depth Perception 17)

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The relative error in using instead of the motion/pursuit law is . This Demonstration interactively computes the error.

Contributed by: Keith Stroyan (March 2011)
Open content licensed under CC BY-NC-SA


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Experimental evidence suggests that people underestimate relative depth for distractors beyond the fixate () and overestimate closeness (or for distractors nearer than the fixate. The motion/pursuit ratio has this relationship to the motion/pursuit depth formula, so it is possible that the ratio alone is a better estimate of the perceived depth.

The Demonstration "Motion/Pursuit Ratio and Depth in 2D (Visual Depth Perception 18)" (see Related Links) compares the motion/pursuit ratio and the motion pursuit law in two distractor dimensions.



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