Title :
Simultaneous estimation of optical flow and object state: A modified approach to optical flow calculation
Author :
Pathirana, Pubudu N. ; Lim, Allan E K ; Carminati, John ; Premaratne, Malin
Author_Institution :
Deakin Univ., Geelong
Abstract :
Differential optical flow methods are widely used within the computer vision community. They are classified as being either local, as in the Lucas-Kanade method, or global, as in the Horn-Schunck technique. As the physical dynamics of an object is inherently coupled into the behavior of its image in the video stream, in this paper, we use such dynamic parameter information in calculating optical flow when tracking a moving object using a video stream. Indeed, we use a modified error function in the minimization that contains physical parameter information. Further, the refined estimates of optical flow is used for better estimation of the physical parameters of the object in the simultaneous estimation of optical flow and object state(SEOS).
Keywords :
computer vision; image sequences; object detection; state estimation; video streaming; Horn-Schunck technique; Lucas-Kanade method; computer vision community; moving object tracking; object state estimation; optical flow calculation; optical flow estimation; video stream; Computer vision; Image motion analysis; Nonlinear optics; Optical fiber networks; Optical filters; Optical noise; Optical sensors; Parameter estimation; State estimation; Streaming media; Optical flow; state estimation;
Conference_Titel :
Networking, Sensing and Control, 2007 IEEE International Conference on
Conference_Location :
London
Print_ISBN :
1-4244-1076-2
Electronic_ISBN :
1-4244-1076-2
DOI :
10.1109/ICNSC.2007.372853