Vision scientist Lothar Spillmann at the University of Freiburg in Germany stumbled upon the illusion while browsing Ouchi's book on Japanese Optical and Geometrical Art.
德国弗莱堡大学视觉科学家洛萨·斯皮尔曼在浏览ouchi的一本书《日本光学和几何学艺术》时，偶然见到这一错觉。
Vision scientist Lothar Spillmann at the University of Freiburg in Germany stumbled upon the illusion while browsing Ouchi's book on Japanese Optical and Geometrical Art.
德国弗莱堡大学视觉科学家洛萨·斯皮尔曼在浏览ouchi的一本书《日本光学和几何学艺术》时，偶然见到这一错觉。
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