An important task in many vision applications is that of rapidly estimating the orientation of an object with respect to some frame of reference. Because of their speed and parallel processing capabilities, optical co...
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It is shown that proper selection of constraint phases in minimum variance synthetic discriminant functions can further reduce the output variance due to input noise. It is demonstrated with the help of examples that ...
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It is shown that proper selection of constraint phases in minimum variance synthetic discriminant functions can further reduce the output variance due to input noise. It is demonstrated with the help of examples that this reduction in variance can range from being negligible to being significant. The exact amount of reduction depends on the constraint magnitudes, training images, and the noise covariance matrix.
An analog optical matrix-vector processor with 10-bit accuracy is described. The operating mode of the various components of the system and the system architecture are reviewed. The system is capable of handling bipol...
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A 3-D distortion-invariant multi-class object identification problem is addressed. Our new, fast and robust string-code generation technique (using optical and digital methods) makes the rule-based system quite practi...
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An important step in multitarget tracking (MTT) is the assignment of measurement/target pairing probabilities, i.e., the probability that a certain measurement is associated with a particular target. This is one of th...
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We detail the use of an optical linear algebra processor for a finite element processing application. A linear time-varying structural mechanics finite element earthquake case study is described. The structure respons...
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A model-based optical processor is introduced for the acquisition and tracking of a satellite in close proximity to an imaging sensor of a space robot. The type of satellite is known in advance, and a model of the sat...
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Coherent optical processors are described that optically generate feature spaces in parallel at high speed. A wedge ring detector sampled Fourier feature space is described, since it provides dimensionality reduction ...
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A new and efficient real time technique to produce a string code description of the contour of an object, such as an (angle, length) = (φ, s) feature space for the arcs describing the contour, is detailed. We demonst...
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Synthetic Discriminant Functions (SDF's) constitute an approach to distortion-invariant pattern recognition when sufficiently descriptive training images are available. Traditionally, the SDF's have been desig...
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