ブライアン・メイさんのインスタグラム写真 - (ブライアン・メイInstagram)「OK ! One for the Stereoscopists out there ! Anyone for a 3-D puzzle ? This ‘wire’ cube (in mono) is a simple example of a ‘bistable’ image - we can see it in two completely different ways - but not both at the same time. My best friend Tom, always a source of inspiration, wrote to me to ask if I thought that a stereoscopic version would also be bistable. My immediate reaction was that the stereoscopic versions would be completely stable, and shatter the ambiguity. But when I drew 2 stereoscopic versions - one for each perceived state, It didn’t turn out like I expected. I wonder what you guys see ? Figure 1 (swipe for parallel view or cross-eyed) is the view from above - which from the start I found easier to see. Figure 2 is with the cube viewed from underneath. When I free-viewed these, it was immediately easy for me to see the first version quite stable in 3-D. But figure 2, which I imagined would also be perfectly stable, didn’t behave as expected. I found that I was feeling some confusion, and the cube basically looked flat. I guess my brain was so reluctant to see the second configuration, that it ignored the parallax information coming at me. In figure 3, I greyed out the rear edges in figure 2, to try to suggest to my brain that they were definitely behind. But it still didn’t work. So then I took the rear edges out completely, and, hey presto! Suddenly I could see without any problem the cube viewed from underneath. But the strangest thing was that when I now looked back up at figure 3, and even figure 2, they became easy to view as well! I guess my conclusion is that the brain perceives depths in mysterious ways, responding to many different clues - light and shade, parallax, and also preconceptions ? What do you think . Tell me ! Bri」9月29日 16時11分