Resources Contact Us Home
Efficient imagery exploitation employing wavelet-based feature indices

Image Number 5 for United States Patent #7805005.

A wavelet-based band difference-sum ratio method reduces the computation cost of classification and feature extraction (identification) tasks. A Generalized Difference Feature Index (GDFI), computed using wavelets such as Daubechies wavelets, is employed in a method to automatically generate a large sequence of generalized band ratio images. In select embodiments of the present invention, judicious data mining of the large set of GDFI bands produces a small subset of GDFI bands suitable to identify specific Terrain Category/Classification (TERCAT) features. Other wavelets, such as Vaidyanathan, Coiflet, Beylkin, and Symmlet and the like may be employed in select embodiments. The classification and feature extraction (identification) performance of the band ratio method of the present invention is comparable to that obtained with the same or similar data sets using much more sophisticated methods such as discriminants, neural net classification, endmember Gibbs-based partitioning, and genetic algorithms.

  Recently Added Patents
Plants and seeds of corn variety CV577261
Light-emitting device package and method of manufacturing the same
Image forming apparatus and image forming method
Home appreciation participation notes
Water bottle warning triangle
System and method for storing redundant information
Integrated testing circuitry for high-frequency receiver integrated circuits
  Randomly Featured Patents
Control valve having a disc shaped throttle
Interfitting toy octopus
Method for controlling an ultrasonic machining process
Liquid purification system
Process for the production of new pepstatins having anti-pepsin activity
Swimming pool anchor and removal tool
Electronic notebook for data
Voice-over-ATM switch architecture allowing congestion-dependent transport of silence cells
Fluid control valve
Treating means for bodies of water