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
Method for implementing dynamic pseudorandom keyboard remapping
Fluid conduit with PTC fabric heating
Water bottle warning triangle
Compositions of PD-1 antagonists and methods of use
Memory elements with increased write margin and soft error upset immunity
Organic electroluminescent element
Thermoplastic fluoropolymer composition
  Randomly Featured Patents
Dielectric antenna for high frequency wireless communication apparatus
Insulated conductor temperature limited heaters
Zoom lens barrel and camera incorporating such barrel
Apparatus for deflecting mass flows of rod-shaped articles
Process for manufacturing miniature ball bearings
Stretch wrap films
Method and apparatus for implementing deployment descriptors in an enterprise environment
Apparatus with vibration-damped component, especially a brake
Marking device
System and method for transmitting entertainment information to authorized ones of plural receivers