Abstract
Existing methods for incorporating subspace model constraints in contour tracking use only partial information from the measurements and model distribution. We propose a complete fusion formulation for robust contour tracking, optimally resolving uncertainties from heteroscedastic measurement noise, system dynamics, and a subspace model. The resulting non-orthogonal subspace projection is a natural extension of the traditional model constraint using orthogonal projection. We build models for coupled double-contours, and exploit information from the ground truth initialization through a strong model adaptation. Our framework is applied for tracking in echocardiograms where the noise is heteroscedastic, each heart has distinct shape, and the relative motions of epi- and endocardial borders reveal crucial diagnostic features. The proposed method significantly outperforms the traditional shape-space-constrained tracking algorithm. Due to the joint fusion of heteroscedastic uncertainties, the strong model adaptation, and the coupled tracking of double-contours, robust performance is observed even on the most challenging cases.
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Zhou, X.S., Comaniciu, D., Krishnan, S. (2004). Coupled-Contour Tracking through Non-orthogonal Projections and Fusion for Echocardiography. In: Pajdla, T., Matas, J. (eds) Computer Vision - ECCV 2004. ECCV 2004. Lecture Notes in Computer Science, vol 3021. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-24670-1_26
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DOI: https://doi.org/10.1007/978-3-540-24670-1_26
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