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
Reducing energy and increasing speed by an instruction substituting subsequent instructions with specific function instruction
Method of forming solderable side-surface terminals of quad no-lead frame (QFN) integrated circuit packages
6-O-substituted benzoxazole and benzothiazole compounds and methods of inhibiting CSF-1R signaling
Format for providing traffic information and a method and apparatus for using the format
Terminal for flat test probe
Converter and measuring apparatus
Multiple-frequency inversion method and control apparatus for internal combustion engine driven generator
  Randomly Featured Patents
Spark-plug assembly for internal-combustion engine
Support structures using tubes having variable wall thicknesses
Integrated optics waveguide accelerometer with a proof mass adapted to exert force against the optical waveguide during acceleration
Method and apparatus for correcting image formation in accordance with a potential measurement and a density measurement selected along an axial direction of a photosensitive drum
Domain configuration in an ethernet OAM network having multiple levels
Tire conveyor assembly and components thereof
Palladium and germanium-containing catalysts and alkylaromatic transalkylation processes using such catalysts
Device for minimizing crosstalk in multiplexed addressing signals for an RMS-responding device
Production of silanes by acid hydrolysis of alloys of silicon and of alkaline-earth metals or alkaline-earth metal silicides
Computer based human-centered display system