Title
ASFlow: Unsupervised Optical Flow Learning With Adaptive Pyramid Sampling
Abstract
We present an unsupervised optical flow estimation method by proposing an adaptive pyramid sampling in the deep pyramid network. Specifically, in the pyramid downsampling, we propose a Content-Aware Pooling (CAP) module, which promotes local feature gathering by avoiding cross region pooling, so that the learned features become more representative. In the pyramid upsampling, we propose an Adaptive Flow Upsampling (AFU) module, where cross edge interpolation can be avoided, producing sharp motion boundaries. Equipped with these two modules, our method achieves the best performance for unsupervised optical flow estimation on multiple leading benchmarks, including MPI-Sintel, KITTI 2012 and KITTI 2015. Particularly, we achieve EPE=1.5 on KITTI 2012 and F1=9.67% KITTI 2015, which outperform the previous state-of-the-art methods by 16.7% and 13.1%, respectively.
Year
DOI
Venue
2022
10.1109/TCSVT.2021.3130281
IEEE Transactions on Circuits and Systems for Video Technology
Keywords
DocType
Volume
Unsupervised learning,optical flow,pyramid upsampling,pyramid downsampling
Journal
32
Issue
ISSN
Citations 
7
1051-8215
0
PageRank 
References 
Authors
0.34
12
6
Name
Order
Citations
PageRank
Shuaicheng Liu136328.26
Kunming Luo200.34
Ao Luo365.22
Chuan Wang411013.58
Fanman Meng500.34
Bing Zeng600.34