An optical illusion work 'Transforming garage roof' where the shape of the roof is different when viewed from the front and what is reflected in the mirror
Mr. Kokichi Sugihara, who works as a special research professor at Meiji University, presented a work called 'Transforming Garage Roof ' in which the shape of the roof looks different when viewed from the front and when viewed in the mirror using
'Ambiguous Objects' that change their appearances in a mirror --Kokichi Sugihara's Homepage (Japanese)
Normally, the shape of an object does not change when reflected in a mirror. However, Mr. Sugihara has created an optical illusion work in which the shape of the roof differs depending on the viewing angle, and publishes it on his blog.
The following is the 'transforming garage roof' announced by Mr. Sugihara. When viewed from the front, the roof is rounded, but when viewed from the back in the mirror, the roof has a zigzag shape.
Ambiguous Garage Roof-YouTube
You can see what the actual roof shape of 'Transforming Garage Roof' looks like in one shot by watching the following movie.
The 'transforming garage roof' is a rounded roof when viewed from the front, but it is a zigzag roof when viewed from the back.
If you rotate the base on which the roof is placed, you will see that the shape of the roof is quite distorted.
The mirror does not have any work done on it, it looks like a 'rounded roof' from a certain angle and a 'zigzag roof' from another angle.
The reason for this is that we want to understand that the human brain has a flat cut that extends vertically from the center of the roof edge (red line).
By taking advantage of this characteristic, the edge of the roof is cut in a zigzag pattern so that it looks like a 'rounded roof' or a 'zigzag-shaped roof' from a specific angle.
won second place in the 2015 Best Illusion of the Year Contest .
The 'Transforming Garage Roof'
Using the characteristics used in the 'Transforming Garage Roof', several optical illusion works that change the image seen from the front and the image seen from the back reflected in the mirror have been released.
Ambiguous Cylinder Illusion, ' won second place in the 2016 Best Illusion of the Year Contest,and is in STL format for actual output with a 3D printer.The data is open to the public.
The illusion of a cylinder whose cross-sectional shape changes depending on the viewing angle, '
Ambiguous Cylinder Illusion-YouTube
In the case of the optical illusion of a cylinder, the cross section is designed to look like a circle when looking down from an angle of 45 degrees to the left and a diamond when looking down from an angle of 45 degrees to the right.
Therefore, it is important to note that the mirror must be tilted slightly downwards to allow both sections to be seen from one point of view.