Search Results for author: Peirong Liu

Found 9 papers, 2 papers with code

Efficient conditioned face animation using frontally-viewed embedding

no code implementations16 Mar 2022 Maxime Oquab, Daniel Haziza, Ludovic Schwartz, Tao Xu, Katayoun Zand, Rui Wang, Peirong Liu, Camille Couprie

As the quality of few shot facial animation from landmarks increases, new applications become possible, such as ultra low bandwidth video chat compression with a high degree of realism.

Fluid registration between lung CT and stationary chest tomosynthesis images

no code implementations6 Mar 2022 Lin Tian, Connor Puett, Peirong Liu, Zhengyang Shen, Stephen R. Aylward, Yueh Z. Lee, Marc Niethammer

We demonstrate our approach for the registration between CT and stationary chest tomosynthesis (sDCT) images and show how it naturally leads to an iterative image reconstruction approach.

Computed Tomography (CT) Image Reconstruction

Deep Decomposition for Stochastic Normal-Abnormal Transport

no code implementations CVPR 2022 Peirong Liu, Yueh Lee, Stephen Aylward, Marc Niethammer

Extensive comparisons demonstrate that our model successfully distinguishes stroke lesions (abnormal) from normal brain regions, while reconstructing the underlying velocity and diffusion tensor fields.

Optical Flow Estimation Time Series +1

Accurate Point Cloud Registration with Robust Optimal Transport

2 code implementations NeurIPS 2021 Zhengyang Shen, Jean Feydy, Peirong Liu, Ariel Hernán Curiale, Ruben San Jose Estepar, Raul San Jose Estepar, Marc Niethammer

Finally, we showcase the performance of transport-enhanced registration models on a wide range of challenging tasks: rigid registration for partial shapes; scene flow estimation on the Kitti dataset; and nonparametric registration of lung vascular trees between inspiration and expiration.

Point Cloud Registration Scene Flow Estimation

Self-appearance-aided Differential Evolution for Motion Transfer

no code implementations9 Oct 2021 Peirong Liu, Rui Wang, Xuefei Cao, Yipin Zhou, Ashish Shah, Maxime Oquab, Camille Couprie, Ser-Nam Lim

Image animation transfers the motion of a driving video to a static object in a source image, while keeping the source identity unchanged.

Image Animation

Discovering Hidden Physics Behind Transport Dynamics

no code implementations CVPR 2021 Peirong Liu, Lin Tian, Yubo Zhang, Stephen R. Aylward, Yueh Z. Lee, Marc Niethammer

To help with identifiability, we develop an advection-diffusion simulator which allows pre-training of our model by supervised learning using the velocity and diffusion tensor fields.

Optical Flow Estimation Time Series +1

Perfusion Imaging: A Data Assimilation Approach

no code implementations6 Sep 2020 Peirong Liu, Yueh Z. Lee, Stephen R. Aylward, Marc Niethammer

In this work we therefore propose a data-assimilation approach (PIANO) which estimates the velocity and diffusion fields of an advection-diffusion model that best explains the contrast dynamics.

Computed Tomography (CT)

Deep Modeling of Growth Trajectories for Longitudinal Prediction of Missing Infant Cortical Surfaces

no code implementations6 Sep 2020 Peirong Liu, Zhengwang Wu, Gang Li, Pew-Thian Yap, Dinggang Shen

Charting cortical growth trajectories is of paramount importance for understanding brain development.

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