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https://hdl.handle.net/20.500.14279/23635
Τίτλος: | Global optimization for motion estimation with applications to ultrasound videos of carotid artery plaques | Συγγραφείς: | Murillo, Sergio Pattichis, Marios S. Soliz, Peter Barriga, Simon E. Loizou, Christos P. Pattichis, Constantinos S. |
Major Field of Science: | Engineering and Technology | Field Category: | Medical Engineering | Λέξεις-κλειδιά: | Motion estimation;motion analysis;Ultrasound video motion;Atherosclerotic plaques | Ημερομηνία Έκδοσης: | Φεβ-2010 | Πηγή: | SPIE Medical Imaging, 2010, 14–15 February, San Diego, California, United States | Conference: | SPIE Medical Imaging | Περίληψη: | Motion estimation from digital video is an ill-posed problem that requires a regularization approach. Regularization introduces a smoothness constraint that can reduce the resolution of the velocity estimates. The problem is further complicated for ultrasound videos (US), where speckle noise levels can be significant. Motion estimation using optical flow models requires the modification of several parameters to satisfy the optical flow constraint as well as the level of imposed smoothness. Furthermore, except in simulations or mostly unrealistic cases, there is no ground truth to use for validating the velocity estimates. This problem is present in all real video sequences that are used as input to motion estimation algorithms. It is also an open problem in biomedical applications like motion analysis of US of carotid artery (CA) plaques. In this paper, we study the problem of obtaining reliable ultrasound video motion estimates for atherosclerotic plaques for use in clinical diagnosis. A global optimization framework for motion parameter optimization is presented. This framework uses actual carotid artery motions to provide optimal parameter values for a variety of motions and is tested on ten different US videos using two different motion estimation techniques. © 2010 Copyright SPIE - The International Society for Optical Engineering. | URI: | https://hdl.handle.net/20.500.14279/23635 | ISBN: | 9780819480309 | DOI: | 10.1117/12.844496 | Rights: | © SPIE | Type: | Conference Papers | Affiliation: | University of New Mexico VisionQuest Biomedical Intercollege University of Cyprus |
Publication Type: | Peer Reviewed |
Εμφανίζεται στις συλλογές: | Δημοσιεύσεις σε συνέδρια /Conference papers or poster or presentation |
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