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光学图象差异检测是光学信息处理的一个重要分支,在图象特征(例如指纹)识别、遥感资料判读、城乡规划以及目标(例如天体或细胞等)移位、增生、消失与胀缩等的监测,集成电路产品缺陷的检验等很多重要部门都有实际应用。自D.Gabor等第一次提出利用复振幅进行图象的加减处理以来,关于图象差异的光学检测方法已有好几种。J.F.Ebersole曾对此作过较全面的评述。其中在相干光图象差别信息处理方面有:全息法、干涉仪法、光栅编码法等。由于相干光处理不可避
Optical image difference detection is an important branch of optical information processing. It is widely used in image features (such as fingerprinting) recognition, remote sensing data interpretation, urban and rural planning and target (such as celestial or cell) displacement, proliferation, disappearance and expansion Monitoring, testing of integrated circuit product defects and many other important departments have practical application. Since D. Gabor et al. First proposed the use of complex amplitudes for the addition and subtraction of images, there are several methods of optical detection of image differences. J.F. Ebersole made a more comprehensive review of this. Which coherent light image difference in information processing are: holography, interferometry, grating coding method. Due to coherent light processing inevitable