About Me
I’m an applied scientist at Amazon Alexa. I was a postdoctoral research scientist at Digital Video and MultiMedia Lab at the Columbia University in the city of New York, supervised by Prof. Shih-Fu Chang. I obtained a Ph.D. from Tsinghua University, Beijing, China, in 2016, supervised by Prof. Shengjin Wang. My research interests include local feature detection and description, large scale image retrieval and image forensics. Here is my full resume.
News
Jun. 2020
I have one paper accepted by IEEE Journal of Selected Topics in Signal Processing
May. 2020
I'll be serving as a Special Session Chair in WIFS 2020
Feb. 2020
I'll be serving as an AC in ACMMM 2020
Sep. 2019
I have one paper accepted in WIFS 2019
Experience
Amazon Alexa
Cambridge, MA, USA
Applied Scientist
Nov. 2019 - Present
Columbia University
New York, New York, USA
Postdoctoral Research Scientist
July 2016 - Oct. 2019
Tencent, Inc.
Beijing, China
Research Intern
Nov. 2015 - May 2016
JD.com
Beijing, China
Research Intern
Aug. 2015 - Nov. 2015
Education
Tsinghua University
Beijing, China
Ph.D., Electrical Engineering
Sep. 2013 - Jul. 2016
Columbia University
New York, New York, USA
Visiting Scholar
Nov. 2014 - May 2015
Tsinghua University
Beijing, China
M.S., Electrical Engineering
Sep. 2010 - Jul. 2013
Tsinghua University
Beijing, China
B.S., Electronic Engineering
Sep. 2006 - Jul. 2010
Projects
Visual Political Literacy Project
Danesfield
Events
NYC Media Lab’s Annual Summit 2019
Brooklyn, NY
Sep. 2019
We will host a demo "Political Visual Literacy App"
CVPR 2019
Long Beach, CA
Jun. 2019
I co-organized the 2nd Landmark Recognition Workshop
CVPR 2018
Salt Lake City, UT
Jun. 2018
I co-organized the 1st Landmark Recognition Workshop
Selected Publication
Xu Zhang, Zhaohui H. Sun, Svebor Karaman, Shih-Fu Chang
Discovering Image Manipulation History byPairwise Relation and Forensics Tools
IEEE Journal of Selected Topics in Signal Processing
Xu Zhang, Svebor Karaman, Shih-Fu Chang
Detecting and Simulating Artifacts in GAN Fake Images
WIFS 2019
Mang Ye, Xu Zhang, Pong C. Yuen, and Shih-Fu Chang
Unsupervised Embedding Learning via Invariant and Spreading Instance Feature
CVPR 2019
Matthew J. Leotta, Chengjiang Long, Bastien Jacquet, Matthieu Zins, Dan Lipsa, Jie Shan, Bo Xu, Zhixin Li, Xu Zhang, Shih-Fu Chang, Matthew Purri, Jia Xue, Kristin Dana
Urban Semantic 3D Reconstruction From Multiview Satellite Imagery
CVPRW 2019. Best paper in the EarthVision 2019 Workshop
Xu Zhang, Felix X Yu, Sanjiv Kumar, Shih-Fu Chang
Learning Spread-out Local Feature Descriptors
ICCV 2017. Spotlight
Xu Zhang, Felix X Yu, Svebor Karaman, Shih-Fu Chang
Learning Discriminative and Transformation Covariant Local Feature Detectors
CVPR 2017
Xu Zhang, Felix X Yu, Ruiqi Guo, Sanjiv Kumar, Shengjin Wang, Shih-Fu Chang
Fast Orthogonal Projection Based on Kronecker Product
ICCV 2015
Xu Zhang, Felix Xinnan Yu, Svebor Karaman, Wei Zhang, Shih-Fu Chang
Heated-Up Softmax Embedding
arXiv 2018
Xu Zhang, Felix X Yu, Shih-Fu Chang, Shengjin Wang
Deep Transfer Network, Unsupervised Domain Adaptation
arXiv 2015
A Little More About Me
I’m a big fan of scuba diving, photography and volleyball.