1. Robust Optical Flow Estimation in Cardiac Ultrasound Images Using a Sparse Representation
- Author
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Olivier Lairez, Jean-Yves Tourneret, Adrian Basarab, Nora Ouzir, CoMputational imagINg anD viSion (IRIT-MINDS), Institut de recherche en informatique de Toulouse (IRIT), Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées, Université Toulouse III - Paul Sabatier (UT3), Institut des Maladies Métaboliques et Cardiovasculaires (I2MC), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, Institut National Polytechnique (Toulouse) (Toulouse INP), Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Institut National de la Santé et de la Recherche Médicale - INSERM (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université Toulouse - Jean Jaurès - UT2J (FRANCE), Université Toulouse 1 Capitole - UT1 (FRANCE), and Centre Hospitalier Universitaire de Toulouse - CHU Toulouse (FRANCE)
- Subjects
Computer science ,Optical flow ,ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION ,Image processing ,Regularization (mathematics) ,030218 nuclear medicine & medical imaging ,03 medical and health sciences ,0302 clinical medicine ,Robustness (computer science) ,Motion estimation ,Image Interpretation, Computer-Assisted ,Image Processing, Computer-Assisted ,Sparse regularization ,[INFO.INFO-IM]Computer Science [cs]/Medical Imaging ,Humans ,Computer Simulation ,Electrical and Electronic Engineering ,Ultrasonography ,Imagerie médicale ,Robust motion estimation ,Radiological and Ultrasound Technology ,Reproducibility of Results ,Heart ,Dictionary learning ,Sparse approximation ,Vision par ordinateur et reconnaissance de formes ,Informatique ,Echocardiography, Doppler ,Apprentissage ,Computer Science Applications ,Weighting ,Optical flow estimation ,Motion field ,Robust motion estima-tion ,Echocardiography ,Cardiac ultrasound ,Artifacts ,Algorithm ,Algorithms ,Software - Abstract
International audience; This paper introduces a robust 2-D cardiac motion estimation method. The problem is formulated as an energy minimization with an optical flow-based data fidelity term and two regularization terms imposing spa- tial smoothness and the sparsity of the motion field in an appropriate cardiac motion dictionary. Robustness to outliers, such as imaging artefacts and anatomical motion boundaries, is introduced using robust weighting functions for the data fidelity term as well as for the spatial and sparse regularizations. The motion fields and the weights are com- puted jointly using an iteratively re-weighted minimization strategy. The proposed robust approach is evaluated on syn- thetic data and realistic simulation sequences with available ground-truth by comparing the performance with state-of- the-art algorithms. Finally, the proposed method is validated using two sequences of in vivo images. The obtained results show the interest of the proposed approach for 2-D cardiac ultrasound imaging.
- Published
- 2019