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










Image Number 13 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
Uniform light source for an imaging instrument
Method for forming a molded component for an item
Computer system with reservation control
Communication system
Method for manufacturing semiconductor device and method for growing graphene
Internal combustion engine
Differentiating decompensation detection based on co-morbidities in heart failure
  Randomly Featured Patents
Curved walls from flat prefabricated panel formed from three-diamensional metal screen with formed plastic filling
Membrane drying process and system
Ceiling fan blade
Thin film brazing of superabrasive tools
Higher actives dispersion polymer to aid clarification, dewatering, and retention and drainage
Baby bottle
Collapsible three-stage golf cart
Ink jet recording apparatus and method
Plasma-assisted high-power microwave generator
Vehicle seat reclining device