Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method and system for forming image by backprojection










Image Number 5 for United States Patent #5805098.

The method and system quickly and simultaneously generate multi-resolution and high-resolution imagery from projection data obtained, e.g., through synthetic aperture radar, magnetic resonance imaging, x-ray CAT scans, seismic imaging, sonar imaging, and acoustic imaging. The backprojector technique is modified by a quadtree decomposition of the image area. The sensor elements are grouped into subapertures, and an image is formed in each subaperture by backprojection. The subapertures are grouped into larger subapertures and an image is formed in each of the larger subapertures by backprojection. This operation is repeated until a single large subaperture is defined which covers the entire antenna array. In this way, common additions are factored, computed once and reused many times. A set of N projections can produce an N.times.N image through O(N.sup.2 log N) operations.








 
 
  Recently Added Patents
Ionic compound, anti-static pressure-sensitive adhesive and polarizer comprising the same
Flavonoid dimers and methods of making and using such
End to end email monitor
Method and apparatus for executing load distributed printing
Multiple CQI feedback for cellular networks
Motor with power-generation coil module
Mobile phone
  Randomly Featured Patents
Audio renderings for expressing non-audio nuances
Electric cutout
Mortise lock latch assembly
Broad-band non-grounded type ultrashort-wave antenna
Process of fabricating a semiconductor device having cobalt niobate gate electrode structure
LFA-1 alpha subunit antibodies and methods of use
Method and apparatus for high resolution profiling in semiconductor structures
Ground wire connector
Post brace assembly
Twin carriage system