光学模式识别在平面内必须解决四个问题:(1)平移不变;(2)旋转不变;(3)比例不变,(4)强度不变。迄今为止,国内外还没见报导能同时解决这四种畸变不变的滤波器。我们研制了这种滤波器,计算机模拟结果令人满意,并在光电混合图象识别 Optical pattern recognition must solve four problems in the plane: (1) the translation is constant; (2) the rotation is constant; (3) the proportion is constant; and (4) the intensity is not changed. So far, no reports at home and abroad have been able to solve these four distortion-invariant filters simultaneously. We developed this filter, the computer simulation results are satisfactory, and in the photoelectric hybrid image recognition