My research is centered around computer vision and machine learning, especially visual perception (classification, detection, segmentation) and visual generation (summarization and synthesis). Most of my recent work is focused on self-supervised learning from unlabeled videos. Besides conducting basic research, I am also interested in making real-world impact with computer vision: Some of my work have been deployed to production at Yahoo, including video thumbnail detection at Flickr and Tumblr, video summary generation at Video Guide, and live stream video highlighting at Yahoo eSports.