Robust Optical Flow Estimation in Cardiac Ultrasound Images Using a Sparse Representation.
Nora OuzirAdrian BasarabOlivier LairezJean-Yves TourneretPublished in: IEEE Trans. Medical Imaging (2019)
Keyphrases
- sparse representation
- optical flow estimation
- dictionary learning
- variational optical flow
- optical flow
- sparse coding
- illumination variations
- face recognition
- reconstruction error
- flow field
- motion model
- image classification
- signal processing
- coarse to fine
- stereo matching
- piecewise smooth
- cardiac ultrasound images
- high dimensional data
- image patches
- motion field
- image representation
- multiscale
- motion analysis
- multi frame
- dimensionality reduction
- multi class
- feature vectors
- image retrieval
- image sequences
- three dimensional