Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Methods and systems for improved engine speed control during engine starting
Fabrication method of packaging substrate having through-holed interposer embedded therein
Method and apparatus for controlled reoxygenation
Image capture and identification system and process
Horse stationary tab
Inspection systems and methods for detecting defects on extreme ultraviolet mask blanks
Measurement system service for a vehicle instrument panel
  Randomly Featured Patents
Combined dispensing container and applicator for a cosmetic product
Snap handle assembly for an endoscopic instrument
Flash with consistent latency for read operations
Dual line slip printer
Method and apparatus in a wireless communication system for facilitating a handoff
Combating arthropods with substituted triazine-2,4-diones
Abdominal exercise apparatus and method
Injection molding system with high production efficiency and low system cost
Production of synthesis gas from heavy hydrocarbon fuels containing high metal concentrations
Fatty oil ex Helianthus annuus for the production of diperazelaic acid