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. Author manuscript; available in PMC: 2010 Jul 1.
Published in final edited form as: Vision Res. 2009 May 20;49(15):1969–1978. doi: 10.1016/j.visres.2009.05.008

Figure 5.

Figure 5

Curves of constant retinal image motion. Shown are curves of constant retinal motion equal to one degree per second for observer translation speed of 6.5 cm/sec. On the left, the viewing distance and relative depth pairs on this curve are shown. It shows that the same retinal image motion produces different relative depth (d/f) estimates depending on the viewing distance. On the right, the pursuit rate and relative depth pairs are shown. It shows that the same retinal image motion produces relative depth estimates scaled with the pursuit rate dα/dt. Retinal image motion alone does not determine relative depth, but the motion/pursuit law does.