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Permalink: http://hdl.handle.net/1866/16375

Feature-based tracking of urethral motion in low-resolution trans-perineal ultrasound

Article [Accepted Manuscript]
Thumbnail
Feature-based tracking of urethral motion in low resolution trans-perineal ultrasound.pdf (652.4Kb)
Is part of
Engineering in Medicine and Biology Society ; 2011
2011-12-01
Author(s)
Jean, Frédéric
Branzan Albu, Alexandra
Dumoulin, Chantal
Affiliation
  • Faculté de médecine - École de réadaptation
Keywords
  • Feature extraction
  • Ultrasonic imaging
  • Tracking
  • Video sequences
  • Vectors
  • Transforms
  • Error analysis
Abstract(s)
This paper describes a novel algorithm for tracking the motion of the urethra from trans-perineal ultrasound. Our work is based on the structure-from-motion paradigm and therefore handles well structures with ill-defined and partially missing boundaries. The proposed approach is particularly well-suited for video sequences of low resolution and variable levels of blurriness introduced by anatomical motion of variable speed. Our tracking method identifies feature points on a frame by frame basis using the SURF detector/descriptor. Inter-frame correspondence is achieved using nearest-neighbor matching in the feature space. The motion is estimated using a non-linear bi-quadratic model, which adequately describes the deformable motion of the urethra. Experimental results are promising and show that our algorithm performs well when compared to manual tracking.
Jean, Frédéric ; Branzan Albu, Alexandra ; Dumoulin, Chantal (2011) Feature-based tracking of urethral motion in low resolution trans-perineal ultrasound. Engineering in Medicine and Biology Society, 2011, 6639-6642.
Other location(s)
http://dx.doi.org/10.1109/IEMBS.2011.6091637
Collections
  • Faculté de médecine - Travaux et publications [217]

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