Pictures like fig.1 are called "stereograms". In this text, I would like to explain why stereograms look 3D.

像图1这样的图片叫做“立体图”，在这篇文章中，我将向你解释为什么立体图看起来有3D的效果。

youdao

In addition, all stereograms of mine are made in "parallel method", but they are enjoyable enough in "crossing method".

另外，我所有的立体图都是通过“平行法”来制作的，但是也可通过“交叉法”来审视它们。

youdao

Perception: Visual Scene Analysis, Object Recognition, Auditory Scene Analysis, Depth Perception, Stereo Vision, Stereograms.

知觉：视觉景象分析、物体辨识、听觉景象分析、深度知觉、立体视觉、立体图。

youdao

Perception: Visual Scene Analysis, Object Recognition, Auditory Scene Analysis, Depth Perception, Stereo Vision, Stereograms.

知觉：视觉景象分析、物体辨识、听觉景象分析、深度知觉、立体视觉、立体图。

youdao