人类：良好的双眼视觉→立体视觉 Our eyes are about 2%inches (~6.3cm)apart, the retina receives slightly different images of the world. The greater the difference between the two images,the closer the object is to the viewer. The more alike the two images,the further away the object is perceived Our eyes are about 2½ inches (~6.3cm) apart, the retina receives slightly different images of the world. The greater the difference between the two images, the closer the object is to the viewer. The more alike the two images, the further away the object is perceived. 人类: 良好的双眼视觉  立体视觉