Acta Optica Sinica, Volume. 9, Issue 6, 533(1989)
Optical image subtraction with holographic filting
On the basis of two-time filting technique in Fourier optics, a new method for performing optical image subtraction is proposed. A matched holographic filter, a inverse holographic filter of a image and a 8f coherent optical information processing system are used in this scheme. Experiments show that this method is simple and feasible.
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Xu HAOFIAN, HUANG HONGXIN. Optical image subtraction with holographic filting[J]. Acta Optica Sinica, 1989, 9(6): 533