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
Method for delivering a volatile material
Image processing apparatus, image processing system, and image processing method
Fusion of road geometry model information gathered from disparate sources
Compounds, compositions and methods for reducing lipid levels
(4946
Camera with monitor
Wrench
  Randomly Featured Patents
Virtual workspace for tactual interaction
Vertical retrieve spinner device
Hyperspectral microscope for in vivo imaging of microstructures and cells in tissues
Apparatus for mixing gas and liquid
Combined golf club and fishing rod
Penguin roman stuffed toy
Roller skate braking assembly
Production of highly-dispersible water-soluble polymers
Automatic video projection screen
Toilet transfer systems and methods