Tennis
In this research we measured a visual motion induced mislocalization in professional tennis.
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The demo above shows two dots moving toward each other that bounce in physical alignment. Most
observers perceive the bounce locations to be misaligned (the dot on top appears shifted to the left (see left image) or to the right
(see right image) of the one on the bottom). The misalignment is entirely a visual illusion caused by the motion of the dot.
2008
Perceptual mislocalization of bouncing balls by professional tennis
referees
The perceived position of a moving object depends on the object’s motion and the motion of other
objects in the scene [1]. Here, we report a real-world example of how this causes a perceptual error
for professional tennis referees, which players could exploit to their advantage.
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For supplemental data, click here.