Illusion using movies #13

since February 5, 2020

Warning: This page includes real animations. Please do not keep watching them for a long time. Although this page has carefully avoided the known harmful stimuli, unknown ones might happen to be included. Never copy them.


Differences in perceived speed pic.twitter.com/V42VxQDRZ3

— Akiyoshi Kitaoka (@AkiyoshiKitaoka) February 4, 2020

"Illusion of perceived speed"

When observers take a train and see the front scene with a video camera, the speed of the train appears to be slower when the camera zoomed in. In contrast, the speed appears to be faster when the camera zoomed out.

Copyright Akiyoshi Kitaoka 2020 (February 4)

speedillusion-IMG_6690.mp4




cf. expansion of logarithmically-drawn, concentric sinusoidal-lumimance gratings (1 Hz; 'expansion ratio = 1.414 (left) and 2 (right)')


Movie illusion 12

Movie illusion 11

Movie illusion 10

Movie illusion 9

Movie illusion 8

Movie illusion 7

Movie illusion 6

Movie illusion 5

Movie illusion 4

Movie illusion 3

Movie illusion 2

Movie illusion


Top page