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
Assay for the diagnosis of flaviviral infection using antibodies with high affinity for NS1 protein of flavivirusi in hexameric form
Carbon dioxide capture system and methods of capturing carbon dioxide
Liquid crystal display backlight control
Methods and apparatuses for configuring and operating graphics processing units
Method and system for triggering message waiting indicator delivery
Systems and methods for building axes, co-axes and paleo-geographic coordinates related to a stratified geological volume
Opportunistic modem
  Randomly Featured Patents
Fuel filler port device of fuel tank for straddled vehicle
Method for the control of phytopathogenic fungi using phenylalkoxyphenylurea compounds
Driving device
Method of determining invaded formation properties including resistivity dielectric constant and zone diameter
Intimate garment protector
Process for manufacture of uniformly sized metal spheres
Sealed dispensing closure with a sealed penetrator
Method of and apparatus for marine seismic surveying
NMOS data storage cell for clocked shift register applications
Fluid applicator