Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Simultaneous grayscale and geometric registration of images










Image Number 4 for United States Patent #7664302.

Simultaneous grayscale and geometric registration of images, such as mammograms, facilitates temporal comparison and enhances the speed and reliability of computer aided diagnosis (CAD) detection of medical abnormalities. The method generally includes optimizing a merit function, e.g., sum of squared errors, containing parameters associated with a transformation function for simultaneous geometric and grayscale registering of the images, the optimizing of the merit function being performed by determining optimal values of the parameters using data in the images and registering one image to the other by applying the geometric and grayscale transformation function using the optimal values of the parameters. The optimizing may be performed iteratively from coarse to fine resolutions using a modified Levenberg-Marquardt method for optimizing nonlinear parameters with linear regression for optimizing linear parameters. A final iteration may be performed after removing pixel value pairs from the images that correspond to outliers of a joint pixel value histogram.








 
 
  Recently Added Patents
Firewall-tolerant voice-over-internet-protocol (VoIP) emulating SSL or HTTP sessions embedding voice data in cookies
Cooler
Digital-to-analog converter and performing method thereof
Fusing apparatus and image forming apparatus provided with the same, and heating apparatus
Para-xylylene based microfilm elution devices
Method and system for producing fluoride gas and fluorine-doped glass or ceramics
Image capture and identification system and process
  Randomly Featured Patents
Background acoustic signal suppression in photoacoustic detector
Closed end regeneration method
Fuel consumption meter for internal combustion engines and method
Pharmaceutical methods of using 3-heteroarylalkyl-4-quinazolinones
Parachute trigger mechanism
Apolipoprotein A-I agonists and their use to treat dyslipidemic disorders
Snow thrower
Method and apparatus for maintaining packet order integrity in parallel switching engine
Rail cover with surface depressions
High performance supersonic bleed inlet