The demo code and network’s weights for PICTURE which is accepted in MICCAI 2022 . The zip file contains phantom data, network weights for PICTURE, pre-trained weights, and network model. The network used is MPWC-Net++  which is a modification of irrPWC-Net . If you use this code, please cite the following papers.
 Tehrani AK, Rivaz H. Physically Inspired Constraint for Unsupervised Regularized Ultrasound Elastography. accepted in MICCAI 2022.
 Tehrani AK, Rivaz H. MPWC-Net++: evolution of optical flow pyramidal convolutional neural network for ultrasound elastography. In Medical Imaging 2021: Ultrasonic Imaging and Tomography 2021 Feb 15 (Vol. 11602, p. 1160206). International Society for Optics and Photonics.
 Hur J, Roth S. Iterative residual refinement for joint optical flow and occlusion estimation. InProceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition 2019 (pp. 5754-5763).