本文指出,图形识别实质上是图形空间中的表象变换(坐标系变换)。由于表象变换是通过么正变换实现的,用光学方法进行图形识别是比较合适的。本文着重讨论了如何只根据所需识别的标准图形组,构造光学系统,即用光学方法直接实现投影变换的方法。并进一步发展了文献[3]中的优化方法。 This paper points out that pattern recognition is essentially an image transformation (transformation of coordinate system) in graphics space. As the appearance of the transformation is what is achieved through the transformation, the optical method of image recognition is more appropriate. This article focuses on how to construct an optical system based only on the standard pattern group that needs to be identified, that is, the method of using the optical method to directly transform the projection. And further developed the optimization method in [3].