What I love most about professor Kitaoka’s homegrown illusions, is their simplicity. Just look at the color-adapting sample he came up with all the way back in 2005. Even though the central square appears to be greenish, in reality it’s monochromatic. Meaning, the central square actually lacks color and its pattern is composed in gray-scale. If you wonder what “Tanuki” means, well it’s a wild animal that looks like a dog.
There are bunch more similar examples. Just check our archives, or see some of the older posts in this category. Once you zoom in the picture (and ignore the surrounding colors), you’ll be convinced the square is monochromatic. The hard part is zooming out again, and convincing yourself what you have just realized still holds.