Abstract
Studies of the human visual system have led to neural network models for computing with a variety of architectures and algorithms that can exploit invariants in image processing, feature extraction,1 and subsequently fault-tolerant associative memory for pattern recognition. Scale and rotation invariance is achieved by image data flowing through a nonuniform polar exponential sampling grid to a uniform output space.2 Image domain bandpassing techniques are then used to extract invariant feature information from which fault-tolerant associative memory using the outer product formulism is applied to handwritten character recognition.
© 1986 Optical Society of America
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