Title : 
A novel coupled transmission-reflection tomography and the V-line Radon transform
         
        
            Author : 
Moayedi, F. ; Azimifar, Zohreh ; Fieguth, Paul ; Kazemi, A.
         
        
            Author_Institution : 
Sch. of Electr. & Comput. Eng., Shiraz Univ., Shiraz, Iran
         
        
        
        
        
        
            Abstract : 
This paper presents a novel tracker, based on combining a linear chain conditional random field (CRF) adaptive multi resolution segmentation with an unscented Kalman filter (UKF). Specifically, the proposed method combines multiple features and multiple resolutions to facilitate video tracking. The advantages of our method lie in its speed and robust ness. Speed is dramatically improved by taking into account multiple resolutions in one dimensional CRF-based segmentation. Robustness is achieved by using multiple cues. The performance of the proposed method is demonstrated in human head tracking with a non-stationary camera. Results show that we are able to maintain real-time processing on quite generous video sequences. The paper argues that our approach is faster, more efficient and more robust than the conventional UKF.
         
        
            Keywords : 
adaptive Kalman filters; image resolution; image segmentation; image sequences; object tracking; video signal processing; CRF; UKF; adaptive multi-resolution; conditional random field; contour tracking; human head tracking; image segmentation; non-stationary camera; unscented Kalman filter; video sequences; video tracking; Detectors; Image reconstruction; Mathematical model; Mirrors; Tomography; Transforms; Radon transform; X-ray imaging; mirrors; reflection; tomography;
         
        
        
        
            Conference_Titel : 
Image Processing (ICIP), 2011 18th IEEE International Conference on
         
        
            Conference_Location : 
Brussels
         
        
        
            Print_ISBN : 
978-1-4577-1304-0
         
        
            Electronic_ISBN : 
1522-4880
         
        
        
            DOI : 
10.1109/ICIP.2011.6116537