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Deep-learning Optical Flow Outperforms PIV in Obtaining Velocity Fields from Active Nematics
April 25, 2024, 7:43 p.m. | Phu N. Tran, Sattvic Ray, Linnea Lemma, Yunrui Li, Reef Sweeney, Aparna Baskaran, Zvonimir Dogic, Pengyu Hong, Michael F. Hagan
cs.LG updates on arXiv.org arxiv.org
Abstract: Deep learning-based optical flow (DLOF) extracts features in adjacent video frames with deep convolutional neural networks. It uses those features to estimate the inter-frame motions of objects at the pixel level. In this article, we evaluate the ability of optical flow to quantify the spontaneous flows of MT-based active nematics under different labeling conditions. We compare DLOF against the commonly used technique, particle imaging velocimetry (PIV). We obtain flow velocity ground truths either by performing …
abstract article arxiv cond-mat.soft convolutional neural networks cs.lg deep learning features fields flow networks neural networks objects optical optical flow pixel type video
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