@ARTICLE{Yuan:ITS2020, iet:/content/journals/10.1049/iet-its.2020.0439, author = {Yuan Hu}, author = {Hubert P. H. Shum}, author = {Edmond S. L. Ho}, keywords = {dash camera video;control signal;vehicle control;self-supervised deep network;self-driving cars;monocular dash camera;flow predictor;multitask deep learning;motion-based feature;optical flow features;consecutive images;supervised multitask deep network;}, ISSN = {1751-956X}, language = {English}, abstract = {The control of self-driving cars has received growing attention recently. Although existing research shows promising results in the vehicle control using video from a monocular dash camera, there has been very limited work on directly learning vehicle control from motion-based cues. Such cues are powerful features for visual representations, as they encode the per-pixel movement between two consecutive images, allowing a system to effectively map the features into the control signal. The authors propose a new framework that exploits the use of a motion-based feature known as optical flow extracted from the dash camera and demonstrates that such a feature is effective in significantly improving the accuracy of the control signals. The proposed framework involves two main components. The flow predictor, as a self-supervised deep network, models the underlying scene structure from consecutive frames and generates the optical flow. The controller, as a supervised multi-task deep network, predicts both steer angle and speed. The authors demonstrate that the proposed framework using the optical flow features can effectively predict control signals from a dash camera video. Using the Cityscapes data set, the authors validate that the system prediction has errors as low as 0.0130 rad/s on steer angle and 0.0615 m/s on speed, outperforming existing research.}, title = {Multi-task deep learning with optical flow features for self-driving cars}, journal = {IET Intelligent Transport Systems}, issue = {13}, volume = {14}, year = {2020}, month = {December}, pages = {1845-1854(9)}, publisher ={Institution of Engineering and Technology}, copyright = {© The Institution of Engineering and Technology}, url = {https://digital-library.theiet.org/content/journals/10.1049/iet-its.2020.0439} }