USA As Represented by Secretary of the Navy

Charles M Bachmann

Thomas L Ainsworth

A method for exploiting the nonlinear structure of hyperspectral imagery employs a manifold coordinate system that preserves geodesic distances in the high-dimensional hyperspectral data space. Data representing physical parameters such as a scene is divided into a set of smaller tiles. The manifolds derived from the individual tiles are then aligned and stitched together to complete the scene. Coordinates are derived for a very large although not complete representative subset of the data termed the 'backbone'. Manifold coordinates are derived for this representative backbone and then the remaining samples inserted into the backbone using a reconstruction principle using the property of local linearity everywhere on the manifold to reconstruct the manifold coordinates for the samples not originally belonging to the backbone. The output is a global manifold coordinate system, which for topographical image data depicts clearer detail of land and water portions of a scene.

Method for image data processing

According to the invention, an apparatus for classifying and sorting input data in a data stream includes a processor having a classifier input control with a first input and second input, an adaptive classifier, a ground truth data input, a ground truth resampling buffer, a source data re-sampling buffer, and an output. The processor is configured for sampling the input data with the input control, comparing one or more classes of the sampled input data with preset data classifications for determining the degree of mis-classification of data patterns, determining a probability proportional to the degree of mis-classification as a criterion for entry into a resampling buffer, entering data patterns causing mis-classification in a resampling buffer with a probability value proportional to the degree of mis-classification, comparing the data patterns to a ground truth source and aligning the data patterns with their associated data pattern labels employing the same decision outcome based on a mis-classification probability as applied to the resampling buffer to form a set of training data, and updating the adaptive classifier to correlate with the training data. These steps are repeated until a sufficient degree of data classification optimization is realized, with the output being an optimized data stream.

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Burke, VA, United States of America

Charles M Bachmann