Princeton > CS Dept > PIXL > Lunch Local Access 


The PIXL lunch meets every Monday during the semester at noon in room 402 of the Computer Science building. To get on the mailing list to receive announcements, sign up for the "pixl-talks" list at lists.cs.princeton.edu.

Upcoming Talks


Monday, September 24, 2018
Attentive Human Action Recognition
Minh Hoai Nguyen, Stony Brook University

Abstract
Enabling computers to recognize human actions in video has the potential to revolutionize many areas that benefit society such as clinical diagnosis, human-computer interaction, and social robotics. Human action recognition, however, is tremendously challenging for computers due to the subtlety of human actionsand thecomplexity of video data. Critical to the success of any human action recognition algorithm is its ability to attend to the relevant information during both training and prediction times.

In the first part of this talk, I will describe a novel approach for training human action classifiers, one that can explicitly factorize human actions from the co-occurring context. Our approach utilizes conjugate samples, which are video clips that are contextually similar to human action samples, but do not contain the actions. Our approach enables the classifier to attend to the relevant information and improve its performance in recognizing human actions under varying context.

In the second part of this talk, I will describe a method for early recognition of human actions, one that can take advantages of multiple cameras. To account for the limited communication bandwidth and processing power, we will learn a camera selection polity so that the system can attend to the most relevant information at each time step. This problem is formulated as a sequential decision process, and the attention policy is learned based on reinforcement learning. Experiments on several datasets demonstrate the effectiveness of this approach for early recognition of human actions.

Bio
Minh Hoai Nguyen is an Assistant Professor of Computer Science at Stony Brook University. He received a Bachelor of Software Engineering from the University of New South Wales in 2006 and a Ph.D. in Robotics from Carnegie Mellon University in 2012. His research interests are in computer vision and machine learning. In 2012, Nguyen and his coauthor received the Best Student Paper Award at the IEEE Conference On Computer Vision and Pattern Recognition (CVPR).


Monday, October 01, 2018
Linguang Zhang


Monday, October 08, 2018
Weifeng Chen


Monday, October 15, 2018
Yuting Yang


Monday, October 22, 2018
Aishwarya Agrawal, Georgia Tech


Monday, November 05, 2018
Fangyin Wei


Monday, November 12, 2018
Jiaqi Su, Elena Balashova


Monday, November 19, 2018
Nora Willett


Monday, November 26, 2018
Dawei Yang


Monday, December 03, 2018
Zachary Teed


Monday, December 10, 2018
Kaiyu Yang


Previous Talks


Monday, September 17, 2018
None

Abstract
We will assign future talks and briefly discuss what everyone has worked on over the summer.