Hello, my name is Xingzhe (兴哲)   Xie (解).

I am a postdoctoral researcher in TELIN-IPI-imec  of Ghent University . My PhD thesis was mainly about trajectory analysis, including both human and vehicle trajectories. Currently I am working on air pollution assessment and prediction. My research interests include data mining, time series analysis, road mapping, image processing, machine learning, etc.

Research

Trajectory analysis

I mainly focuses on trajectory similarity measure, trajectory clustering and trajectory averaging through alignment. Specifically I deploy the techniques mainly in two applications:

Road network inference

In this application, I detect the three main components of the road network: intersections, their connectivity and the geometric representation of the connecting road segments. Moreover, I also work on statistical analysis of the trajectories and on route planning based on the extracted road network.

Work cycle optimization

In this application, I cluster the worker trajectories into different types of executed work cycles and generate a prototypical route for each type of executed work cycle, and build the prototypical velocity and dwell time along each route. These will be used to guide the factory workers to execute their work cycles more efficiently.

Image/Video Processing

I mainly focuses on face tracking and head pose estimation, for the following applications:

Mimicry detection

In this application, I work on detecting whether the interviewee and interviewer mimicry each other during an interview, through smile and head pose analysis.

Best view detection

In this application, I focus on finding the common viewing areas by analyzing the head orientation of the participants in the meeting, and selecting the best view of a multi-camera system for remote meeting participants.

Knowledge discovery and Data mining

I mainly focuses on time series analysis, pattern recognition and machine learning:

Air pollution prediction

I mainly focuses on air pollution assessment and prediction, including both indoor and outdoor environments. Specifically I work on traffic-related pollution predition for outdoor environment.

Projects

Coming soon...

Publications

PhD Dissertation

  • Xie, X. (2016). Human and vehicle trajectory analysis. Ghent University. Faculty of Engineering and Architecture, Ghent, Belgium.  

Journal papers

  • Xie, X., Liao, W., Aghajan, H., Veelaert, P., & Philips, W. (2017). Detecting road intersections from GPS traces using longest common subsequence algorithm. ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION, 6(1). 
  • Xie, X., Wong, K., Aghajan, H., Veelaert, P., & Philips, W. (2016). Road network inference through multiple track alignment. TRANSPORTATION RESEARCH PART C-EMERGING TECHNOLOGIES, 72, 93–108. 
  • Xie, X., Wong, K., Aghajan, H., Veelaert, P., & Philips, W. (2015). Inferring directed road networks from GPS traces by track alignment. ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION, 4(4), 2446–2471.  
  • Nyan, B. B., Deboeverie, F., Eldib, M., Guan, J., Xie, X., Niño Castañeda, J., Van Haerenborgh, D., et al. (2014). Human mobility monitoring in very low resolution visual sensor network. SENSORS, 14(11), 20800–20824. 
  • Xie, X., Wang, H., & Luo, Q. (2011). Obstacle detection for patrol robot using Bumblebee2 stereo vision system. In Applied Mechanics and Materials (Vol. 48, pp. 749-752). Trans Tech Publications. 
  • Jiang, M., Wang, H. Zhang, H, & Xie, X. (2011). Applying improved genetic algorithm to global path planning for mobile robot. Computer Applications and Software, 8, 033. 
  • Luo, Q., ZHANG, H., Wang, H., & Xie, X. (2011). Application of improved artificial potential field approach in local path planning for mobile robot. Computer Engineering and Design, 4, 067. 
  • XIE, X., WANG, H., LIU, R., & LIU, M. (2010). Obstacle height detection based on binocular stereovision. Transducer and Microsystem Technologies, 7, 041. 

Conference papers

  • Xie, X., Liao, W., Aghajan, H., Veelaert, P., & Philips, W. (2016). A novel approach for inferring intersections from GPS traces. In Ji WU, Y. JIN, & J. SHI (Eds.). Presented at the 2016 IEEE Geoscience and Remote Sensing International Symposium, IEEE.
  • Xie, X., Van Cauwelaert, D., Slembrouck, M., Bauters, K., Cottyn, J., Van Haerenborgh, D., Aghajan, H., et al. (2015). Abnormal work cycle detection based on dissimilarity measurement of trajectories. 9th ACM international conference on Distributed Smart Cameras, Proceedings. Presented at the 9th International Conference on Distributed Smart Cameras.
  • Eldib, M., Deboeverie, F., Nyan, B. B., Guan, J., Xie, X., Van Haerenborgh, D., Aghajan, H., et al. (2015). A low-cost visual sensor network for elderly care. FallRisk en Little Sister Slotsymposium, Abstracts. Presented at the FallRisk en Little Sister Slotsymposium.
  • Xie, X., Deboeverie, F., Eldib, M., Philips, W., & Aghajan, H. (2014). PhD forum: analyzing behaviors patterns of the elderly from low-precision trajectories. 8th ACM/IEEE international conference on Distributed Smart Cameras, Abstracts. Presented at the 8th ACM/IEEE International Conference on Distributed Smart Cameras (ICDSC - 2014).
  • Xie, X., De Vylder, J., Van Cauwelaert, D., Veelaert, P., Philips, W., Aghajan, H., Slembrouck, M., et al. (2014). Average track estimation of moving objects using RANSAC and DTW. Eighth ACM/IEEE International Conference on Distributed Smart Cameras, Proceedings. Presented at the Eighth ACM/IEEE International Conference on Distributed Smart Cameras (ICDSC - 2014).
  • Xie, X., Veelaert, P., Philips, W., & Aghajan, H. (2014). Road network inference from GPS traces using DTW algorithm. 2014 IEEE 17TH INTERNATIONAL CONFERENCE ON INTELLIGENT TRANSPORTATION SYSTEMS (ITSC) (pp. 906–911). Presented at the IEEE 17th International Conference on Intelligent Transportation Systems (ITSC), IEEE.
  • Eldib, M., Nyan, B. B., Deboeverie, F., Xie, X., Aghajan, H., & Philips, W. (2014). Behavior analysis for aging-in-place using similarity heatmaps. 8th ACM/IEEE international conference on Distributed Smart Cameras, Proceedings (pp. 34:1–34:6). Presented at the 8th ACM/IEEE international conference on Distributed Smart Cameras (ICDSC - 2014), New York, NY, USA: ACM/IEEE.
  • Xie, X., Wong, K., Aghajan, H., & Philips, W. (2013). Analyzing cyclists’ behaviors and exploring the environments from cycling tracks. Cycling Data Challenge (CDC) workshop, Proceedings. Presented at the Cycling Data Challenge (CDC) workshop (AGILE - 2013).
  • Xie, X., Wong, K., Aghajan, H., & Philips, W. (2013). Smart route recommendations based on historical GPS trajectories and weather information. Mobile Ghent 2013, Abstracts. Presented at the Mobile Ghent 2013.
  • Xie, X., Grünwedel, S., Jelača, V., Niño Castañeda, J., Van Haerenborgh, D., Van Cauwelaert, D., Van Hese, P., et al. (2012). Learning about objects in the meeting rooms from people trajectories. 2012 Sixth international conference on distributed smart cameras (ICDSC). Presented at the 6th ACM/IEEE International conference on Distributed Smart Cameras (ICDSC 2012), New York, NY, USA: IEEE.
  • Grünwedel, S., Xie, X., Philips, W., Chen, C.-W., & Aghajan, H. (2012). A best view selection in meetings through attention analysis using a multi-camera network. 2012 Sixth international conference on distributed smart cameras (ICDSC). Presented at the 6th ACM/IEEE International conference on Distributed Smart Cameras (ICDSC 2012), New York, NY, USA: IEEE.
  • Wang, H., Xie, X., & Liu, R. (2010, July). Combination of RFID and vision for patrol robot navigation and localization. In Control Conference (CCC), 2010 29th Chinese (pp. 3649-3653). IEEE.
  • Xie, X., Wang, H., Liu, R., Xiang, W., & Jiang, M. (2010, October). 3D terrain reconstruction for patrol robot using point grey research stereo vision cameras. In Artificial Intelligence and Computational Intelligence (AICI), 2010 International Conference on (Vol. 1, pp. 47-51). IEEE.

About

Curriculum Vitae

I was born on Dec 30, 1986, in Dingzhou, China. I got my Bachelor degree in Bio-medical Engineering in 2008, and Master degree in Pattern Recognition and Intelligent Systems in 2012, from Southwest University of Science and Technology, Mianyang, Sichuan Province, China. I obtained my PhD degree in Computer Science Engineering in 2016 from Ghent University, under the supervision of Prof. Dr. ir. Wilfried Philips .

Activities

I do a lot of sports, such as badminton, cycling, ubound, squash, fitness, etc. I like cooking very much. I also learned myself knitting through YOUTUBE :).

Badminton

Like every other Chinese, I have been playing badminton since i was a little baby, but just for fun.

Cycling

I used to do mountain biking a lot in China. I have not done any biking any more since I came to Belgium. Recently I started road cycling.

Ubound

This is my favorite group sport in the gym. I love the crazy jumps.

Cooking

Cooking is very much like programming. Recipes are similar to programs in that they are executed step by step. Recipes are often shared. But just like programs, you need to change, remix and adapt them for your own use or taste. You also need to debug them: identify the error and fix it. From the perspective of debugging, programming is much easier than cooking. You may completely run your code again in seconds, but it takes at least minutes to do the cooking again. Besides, you cannot insert breakpoints into your recipes while cooking (TOO BAD).

Contact

Xingzhe Xie

TELIN-IPI-imec
Image Processing and Interpretation (IPI) Research Group
Department of Telecommunications and Information Processing (TELIN)
Ghent University
Technicum building - Room 1.19b
St-Pietersnieuwstraat 41, B-9000 Ghent, Belgium