misc. backward scattering
Raskar博士在屏幕后方放置了一块散射器，以取代将来生产版本中的光学传感器。
In place of the light sensors that would be engineered into a production version, Dr Raskar USES a diffuser placed behind the screen, upon which the tiny images from the individual pinholes are cast.
不存在相干的反射能量，能量向各个方向散射，包括传播方向的后方。
No coherent reflected energy can be identified and the energy is scattered in all directions, including back in the direction from which it came.
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