Image analysis – Histogram processing – For setting a threshold
Patent
1990-06-04
1992-11-03
Moore, David K.
Image analysis
Histogram processing
For setting a threshold
382 49, 364827, G06K 946, G06K 966, G06K 954, G06K 960
Patent
active
051612046
ABSTRACT:
A method and apparatus under software control for pattern recognition utilizes a neural network implementation to recognize two dimensional input images which are sufficiently similar to a database of previously stored two dimensional images. Images are first image processed and subjected to a Fourier transform which yields a power spectrum. An in-class to out-of-class study is performed on a typical collection of images in order to determine the most discriminatory regions of the Fourier transform. A feature vector consisting of the highest order (most discriminatory) magnitude information from the power spectrum of the Fourier transform of the image is formed. Feature vectors are input to a neural network having preferably two hidden layers, input dimensionality of the number of elements in the feature vector and output dimensionality of the number of data elements stored in the database. Unique identifier numbers are preferably stored along with the feature vector. Application of a query feature vector to the neural network will result in an output vector. The output vector is subjected to statistical analysis to determine if a sufficiently high confidence level exists to indicate that a successful identification has been made. Where a successful identification has occurred, the unique identifier number may be displayed.
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Hunt Bobby R.
Hutcheson Timothy L.
Mohan Subramaniam
Narayanan Venkatesh
Or Wilson
Cammarata Michael
Moore David K.
Neuristics, Inc.
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