LiteFlowNet: A Lightweight Convolutional Neural Network for Optical Flow Estimation Tak-Wai Hui, Xiaoou Tang, and Chen Change Loy CUHK-SenseTime Joint Lab, The Chinese University of Hong Kong IEEE Conference on Computer Vision and Pattern Recognition (CVPR) 2018, Spotlight Presentation, Salt Lake City, Utah Abstract FlowNet2, the state-of-the-art convolutional neural network (CNN) for optical flow