Ambiguous or reversible figures 6

since August 19, 2013


"Spinning Necker cube"

The Necker cube appears to rotate clockwise or counterclockwise as seen from above.

produced by Tadamasa Sawada: requested by Akiyoshi Kitaoka 2014 (June 25)



"Spinning Necker cube #2"

The Necker cube appears to rotate clockwise as seen from observer's side. There are two possible axes; one axis appears to alternate the other.

produced by Tadamasa Sawada: requested by Akiyoshi Kitaoka 2014 (June 25)





"Spinning skeleton"

The skeleton appears to rotate clockwise or counterclockwise as seen from above.

produced by Tadamasa Sawada
with permission on June 26, 2014

This animation was originally made for showing 3D shape recovery in Pizlo et al. ( 2010, 2014 ).





"Spinning praying mantis"

The praying mantis appears to rotate clockwise or counterclockwise as seen from the side.

produced by Tadamasa Sawada
with permission on June 26, 2014

This animation was originally made for showing 3D shape recovery in Pizlo et al. ( 2010, 2014 ).


Pizlo Z, Li Y, Sawada T, Kropatsch W & Steinman R M, 2010, "New Approach to the Perception of 3D Shape Based on Veridicality, Complexity, Symmetry and Volume" Vision Research 50(1) 1 – 11
Pizlo Z, Li Y, Sawada T & Steinman R M, 2014, "Making a Machine That Sees Like Us" Oxford University Press




I noticed that Kulpa (1987, Fig. 7a) should be credited to this image.


Kulpa Z, 1987, "Putting order in the impossible" Perception 16(2) 201 – 214

<June 12, 2014>


How about this?



"Upside-down reversible image of a kimono design"

Birds appear to be reversible. One appearance is "seen fron below" while the other is "seen from above".

modulated by Akiyoshi Kitaoka 2014 (May 7)



Parts


The original image is stored at the Ritsumeikan University Art Research Center. This image was produced in the early 20th century. The designer is unknown.

Thanks to Dr. Masako Yamamoto and professor Masaaki Kidachi




Original image





"Rotating birthday cake with depth reversals"

The idea of the famous reversible image using the shape of a piece of cake is applied.

Copyright Akiyoshi Kitaoka 2013 (August 19)


Ambiguous or reversible figures 5

Ambiguous or reversible figures 4

Ambiguous or reversible figures 3

Ambiguous or reversible figures 2

Ambiguous or reversible figures


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