Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Object tracking technique using polyline contours










Image Number 2 for United States Patent #6259802.

A technique of tracking an object of interest in a sequence of images using active polyline contours. An image processor converts a sequence of images into digital image data related to light intensity at the pixels of each image. A computer stores the digital image data and forms an initial polyline that substantially outlines an edge of the object in a first image. The computer forms input polylines for each of the subsequent images which substantially outline the edge in the corresponding images and are derived from the optimal polyline of each previous such image. The computer processes the digital image data, performing a graph exploration procedure that starts with the initial polyline in the first image and the input polylines in the subsequent images. The graph exploration procedure searches polylines in a predefined search space to find the corresponding optimal polylines. The computer evaluates edge strength of the different polylines with respect to the light intensity of its underlying pixels to obtain corresponding contour costs. The polyline with the smallest contour cost is selected as the optimal contour for each of the images. The set of optimal contours are used to track the object of interest.








 
 
  Recently Added Patents
Neurostimulation system
Methods and apparatus for adapting network characteristics in telecommunications systems
Disk array apparatus and firmware update method therefor
Pharmaceutical compositions of paclitaxel, paclitaxel analogs or paclitaxel conjugates and related methods of preparation and use
Medical injector
Method for transmitting a signal
Switching element for a valve train of an internal combustion engine
  Randomly Featured Patents
Method for preparing cavities in teeth for restoration
Icemaker external intrusion protection
Method and system for optimally scheduling a web conference managed by a web application
Rock auger with pilot drill
Interface for a variable direction-of-view endoscope
Container
Method for purification of bases from materials comprising base and salt
Process of manufacture of polyhydric alcohol bromohydrins
Method for the modification of the expression characteristics of an endogenous gene of a given cell line
Hydraulic control system of automatic transmission for vehicle