GAMES Webinar 2019 – 86期 | 陈启峰(香港科技大学),许佳(腾讯AI Lab)

 

【GAMES Webinar 2019-86期】
报告嘉宾:陈启峰,香港科技大学
报告时间:2019年3月14日 晚8:00-8:45(北京时间)
主持人:周晓巍,浙江大学(个人主页:http://www.cad.zju.edu.cn/home/xzhou
报告题目:New Perspectives for Processing and Synthesizing Images and Videos
报告摘要:
In this talk, I will talk about new perspectives in my recent research on processing and synthesizing images and videos. I will present new approaches for extreme low-light image reconstruction and digital zoom based on raw Bayer mosaic images, deep learning based scheme for accelerating image and video processing, parametric and semi-parametric methods for synthesizing images from semantic layouts, recent video synthesis research on future video prediction and video colorization.
讲者简介:
Dr. Qifeng Chen is an assistant professor of CSE and ECE at HKUST. He received his Ph.D. in computer science from Stanford University in 2017, and a bachelor’s degree in computer science and mathematics from HKUST in 2012. His research interests are computer vision, machine learning, optimization, and computer graphics. Four of his papers were selected for full oral presentations in ICCV’15, CVPR’16, ICCV’17, and CVPR’18. He is named one of 35 Innovators under 35 in China in 2018 by MIT Technology Review. He won the Google Faculty Research Awards in 2018. In 2011, he won the 2nd place worldwide at the ACM-ICPC World Finals. He also earned a gold medal at IOI 2007. He co-founded the startup Lino in 2017.
讲者个人主页:https://cqf.io/

报告嘉宾:许佳,腾讯AI Lab
报告时间:2019年3月14日 晚8:45-9:30(北京时间)
主持人:周晓巍,浙江大学(个人主页:http://www.cad.zju.edu.cn/home/xzhou
报告题目:Learning Optical Flow with Limited Data
报告摘要:
In this talk, I will talk about our recent efforts on learning optical flow from unlabeled data. I will first present DDFlow, which distills reliable predictions from a teacher network, and uses these predictions as annotations to guide a student network to learn optical flow. Unlike existing work relying on handcrafted energy terms to handle occlusion, our approach is data-driven, and learns optical flow for occluded pixels. This enables us to train our model with a much simpler loss function, and achieve a much higher accuracy. We conduct a rigorous evaluation on the challenging Flying Chairs, MPI Sintel, KITTI 2012 and 2015 benchmarks, and show that our approach significantly outperforms all existing unsupervised learning methods. Second, I will introduce our latest SelFlow, a self-supervised optical flow learning method. SelFlow enhances DDFlow with more advanced occlusion hallucination, and utilizes temporal information from multiple frames for better flow estimation. This self-training approach provides a great initialization for supervised training. Our fine-tuned models achieve state-of-the-art results on all leading benchmarks. Most notably, SelFlow achieves EPE=4.26 on the Sintel benchmark, outperforming all submitted methods.
讲者简介:
Dr. Jia Xu is a principal researcher at Tencent AI Lab. He obtained his Ph.D. in Computer Sciences from the University of Wisconsin-Madison. Before returning to China, Jia was a senior research scientist in Intel Visual Computing Lab in USA. Jia works on computer vision and deep reinforcement learning, with applications in game AI. He has won the Sintel Optical Flow Benchmark in 2016 and 2018, and the Visual Doom Game AI Competition 2018.
讲者个人主页:http://pages.cs.wisc.edu/~jiaxu/

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Liu, Ligang

刘利刚,中国科学技术大学教授、博导。分别于1996年及2001年于浙江大学获得应用数学学士及博士学位。从事计算机图形学研究,已在该领域顶级期刊ACM Transactions on Graphics上发表论文三十余篇。曾于微软亚洲研究院、浙江大学、哈佛大学工作或访问。曾获微软青年教授奖、陆增镛CAD&CG高科技奖一等奖、国家自然科学奖二等奖等奖项。任多个国内外会议的大会共同主席或论文共同主席及多个国际学术期刊编委。负责创建了中科大《计算机图形学前沿》暑期课程及CCF CAD&CG专委图形学在线交流平台GAMES。

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