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- W3217251271 abstract "Optical flow estimation is an important yet challenging problem in the field of video analytics. The features of different semantics levels/layers of a convolutional neural network can provide information of different granularity. To exploit such flexible and comprehensive information, we propose a semi-supervised Feature Pyramidal Correlation and Residual Reconstruction Network (FPCR-Net) for optical flow estimation from frame pairs. It consists of two main modules: pyramid correlation mapping and residual reconstruction. The pyramid correlation mapping module takes advantage of the multi-scale correlations of global/local patches by aggregating features of different scales to form a multi-level cost volume. The residual reconstruction module aims to reconstruct the sub-band high-frequency residuals of finer optical flow in each stage. Based on the pyramid correlation mapping, we further propose a correlation-warping-normalization (CWN) module to efficiently exploit the correlation dependency. Experiment results show that the proposed scheme achieves the state-of-the-art performance, with improvement by 0.80, 1.15 and 0.10 in terms of average end-point error (AEE) against competing baseline methods - FlowNet2, LiteFlowNet and PWC-Net on the Final pass of Sintel dataset, respectively." @default.
- W3217251271 created "2021-12-06" @default.
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- W3217251271 date "2020-01-17" @default.
- W3217251271 modified "2023-10-17" @default.
- W3217251271 title "FPCR-Net: Feature Pyramidal Correlation and Residual Reconstruction for Optical Flow Estimation" @default.
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- W3217251271 doi "https://doi.org/10.48550/arxiv.2001.06171" @default.
- W3217251271 hasPublicationYear "2020" @default.
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