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Three-dimensional Spatial Electro-optical Correlator
Correlation is essential in signal processing in general, and in optical image processing in particular. A spatial correlation is used extensively in various schemes of edge enhancement, pattern recognition, target tracking, and more. In most of these schemes the functions involved are at most 2-D. However, our real world is 3-D, and in some applications one needs to process 3-D objects in their natural 3-D environment. Pattern recognition and target tracking are examples of applications that can benefit from the use of 3-D correlation. In these applications one uses the information obtained from the 3-D shape of the target and learns its location in the 3-D space.
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