根据数学形态学的基本思想,采用离焦的卷积光学系统,利用电子俘获材料的饱和特性和图像减法功能实现图像微分。这一种方案具有清晰度高、实时性、全并行性的优点,取阈和减法运算都用一片电子俘获薄膜来实现。

Based on the concept of mathimatical morphology, the real time image differentiation taking use of the saturate property and image subtraction ability of electron trapping materials is performed by using a defocused convolver. This method shows many attractive advanteges such as high resolution, real time parallelism and incoherence. The thresholding and subtraction are performed by a single ET device.