Multigrid
Speckle-Constrained Filtering of Ultrasound Images
CVPR '05 Proceedings of the 2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR'05) - Volume 2 - Volume 02
Highly Accurate Optic Flow Computation with Theoretically Justified Warping
International Journal of Computer Vision
Speckle Simulation Based on B-Mode Echographic Image Acquisition Model
CRV '07 Proceedings of the Fourth Canadian Conference on Computer and Robot Vision
Coronary Occlusion Detection with 4D Optical Flow Based Strain Estimation on 4D Ultrasound
FIMH '09 Proceedings of the 5th International Conference on Functional Imaging and Modeling of the Heart
A Multi-scale Feature Based Optic Flow Method for 3D Cardiac Motion Estimation
SSVM '09 Proceedings of the Second International Conference on Scale Space and Variational Methods in Computer Vision
Inter-frame Enhancement of Ultrasound Images Using Optical Flow
IVIC '09 Proceedings of the 1st International Visual Informatics Conference on Visual Informatics: Bridging Research and Practice
Multiple combined constraints for optical flow estimation
ISVC'07 Proceedings of the 3rd international conference on Advances in visual computing - Volume Part II
A Variational Model to Remove the Multiplicative Noise in Ultrasound Images
Journal of Mathematical Imaging and Vision
Large Displacement Optical Flow: Descriptor Matching in Variational Motion Estimation
IEEE Transactions on Pattern Analysis and Machine Intelligence
A Database and Evaluation Methodology for Optical Flow
International Journal of Computer Vision
SIFT Flow: Dense Correspondence across Scenes and Its Applications
IEEE Transactions on Pattern Analysis and Machine Intelligence
Histogram-based optical flow for functional imaging in echocardiography
CAIP'11 Proceedings of the 14th international conference on Computer analysis of images and patterns - Volume Part I
IEEE Transactions on Information Technology in Biomedicine
Motion Detail Preserving Optical Flow Estimation
IEEE Transactions on Pattern Analysis and Machine Intelligence
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Motion estimation on ultrasound data is often referred to as `Speckle Tracking' in clinical environments and plays an important role in diagnosis and monitoring of cardiovascular diseases and the identification of abnormal cardiac motion. The impact of physical effects in the process of data acquisition raises many problems for conventional image processing techniques. The most significant difference to other medical data is its high level of speckle noise, which has completely different characteristics from other noise models, e.g., additive Gaussian noise. In this paper we address the problem of multiplicative speckle noise for motion estimation techniques that are based on optical flow methods and prove that the influence of this noise leads to wrong correspondences between image regions if not taken into account. To overcome these problems we propose the use of local statistics and introduce an optical flow method which uses histograms as discrete representations of local statistics for motion analysis. We show that this approach is more robust under the presence of speckle noise than classical optical flow methods.