Contribution of self-motion in depth perception from shading.

本研究探讨了在类似于运动视差的情况下，手的主动运动在深度知觉中的有效性。观察者通过手电筒或激光笔照射3D球形表面，同时向后移动他的手并用力。指针的阴影或运动轨迹会随着手的运动而变化，研究发现，这种不涉及观察位置移动的自运动信息对深度感知的产生并不是很有用。然而，经过一周的训练后，它变得微不足道。

This study examined the effectiveness of active movement of hand in depth perception in situations similar to that of motion parallax. The observer shone 3D spherical surface by either a flashlight or a laser pointer while moving his hand back and force. The shading or motion trajectory of pointer changes according to the hand motion.It was found that such self-motion information which does not involve movement of observing position is not very useful to generate depth perception. However, it becomes marginally effective after a training of one-week period.