A Motion Perception Experiment.

Motion detection can be hard in the absence of depth and position cues. Here are two videos that look like they show something moving. But they might also look like the camera is moving. Which is it? Object, camera, or both? Can you tell by examining the videos? (The object is rotating a little, and the camera can rotate to track the object - so ignore rotation - we are just interested in if it moves so as to change location) Here I’ll show the videos, let you think about it, and then I’ll reveal the answ