Autocorrelation function and spatial image recognition using a heterodyne interferometer
Abstract
A method for identifying stationary spatial objects using a heterodyne interferometer is considered. The method is based on measurements of the uniform linear motion of interference fringes on a photographic plate. The linear motion measurements are used to derive expressions for the amplitude and phase of the autocorrelation function of the object. Experiments have been carried out in order to test the effectiveness of the method in identifying rectangular objects under a layer of scattering material. It is shown that the dimensions of the rectangular objects were measurable even in the presence of scattering.
- Publication:
-
Zhurnal Tekhnicheskoi Fiziki
- Pub Date:
- July 1985
- Bibcode:
- 1985ZhTFi..55.1448I
- Keywords:
-
- Autocorrelation;
- Image Reconstruction;
- Interferometers;
- Optical Heterodyning;
- Two Dimensional Bodies;
- Coherent Light;
- Image Processing;
- Instrumentation and Photography