本文提供了一个用白光图像处理系统作立体投影的新方法,它包括将两张立体透明图像编码在一张感光片上和在白光图像处理系统的傅里叶频谱平面上采用偏振滤波的新技术。与一般传统的立体投影技术相比较,它可节省拷贝片一倍,并且只用一个投影光学系统。

Theory and experiments of a new stereoprojection technique that uses a white-light optical image processing system are described. The stereoprojection can be accomplished in two steps: (1) Spatial encoding of stereoscopically-coupled images, and (2) spatial polarization filtering at the Fourier plane in a white-light optical image processor. Comparing with existing stereoprojection methods, the present technique requires only one projector and a single piece of encoded film, therefore it is much simpler and more economical for practical applications. From the point of view of optical filtering at the Fourier plane, the polarization concept is new. If the spatial frequency of the Ronchi grating used in the encoding is high enough, there should be little loss in picture resolution.