最后采用了PROM器件作为空间调制器，在实时相干光系统中进行边缘增强效应处理，获得了轮廓清晰的物体图。

Finally, with PROM device as spatial modulator and edge enhanced processing in a real time coherent optical system, a clear image of object can be produced.

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介绍利用阶跃滤波器实现二值图像边缘增强的光学方法。

This paper deals with a optical method of edge enhancement of the binary image using the step filter.

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