News

***** We are routinely seeking motivated and capable people to join or visit us for creative research and development in many subject areas of geospatial science and technology.  Contact Dr. Shan for inquiry. *****

Dec. 2022, Congratulations to Xiangxi Tian, whose work “Detection of Signal and Ground Photons from ICESat-2 ATL03 Data” is published by IEEE Transactions on Geoscience and Remote Sensing. Link.

Dec. 2022, Congratulations to Jie Shan, whose work “Democratizing Photogrammetry: an Accuracy Perspective” is published by Geo-spatial Information Science.

Aug. 2022 Congratulations to Shuang Li, whose work "Adaptive Geometric Interval Classifier" is published by ISPRS International Journal of Geo-Information. Link. 

Mar. 2022 Congratulations ! Agustin Quinones, a recent Ph.D student, was awarded the Graduate School Summer Research Grant for the Summer 2022 semester.

Jan. 2022, Congratulations to Zhixin Li, whose work “RANSAC-based Multi Primitive Building Reconstruction from 3D Point Clouds” is published by ISPRS Journal of Photogrammetry and Remote Sensing. Link

Celebrate, Sharing and Thank You !

Year 2021 is almost over in a largely the same way as 2020. A slight difference is that we taught in person in classroom with masks, while most of year 2020 was virtual. It seems we are getting slightly better, or become used to the COVID. As for research, some of the achievements could be shared as below.

In lidar system and data processing across different platforms, we have developed a georeferencing and self-calibration approach for airborne lidar system by using only digital elevation models; the method is accurate and reliable. Collaborating with leading industry we are able to evaluate the potential of Doppler lidar to detect and track static and moving objects. The work demonstrates the prospect for this new technology. Our long time work on urban scene reconstruction from point clouds has been extended considerably. Common to several of our recent publications, the central idea is to introduce model fitting into building/object reconstruction (airborne and indoor). We have tested hundreds of buildings to demonstrate its superior performance. Finally, our work in lidar has been extended or returned to earth observation from space. We presented a comprehensive evaluation on recent ICESat-2 data products considering multiple factors, including time, season, viewing direction, terrain, as well as landcover. As a result, initial correction model was developed.

For geospatial data science, we have been focused on methodologic development for exploration of urban structure and dynamics using big data. Local regression (geographically weighted regression), kernel method, and network representation have been studied and applied to traffic accident modeling, urban hotspot detection, periodic visiting patterns, and COVID pandemic.

Most of the aforementioned work can be found on Google Scholar. Thank you, the team for the hardwork, as well as the collaborators and the sponsoers. All the best wishes for the coming new year !

Oct. 2021, Congratulations to Mengchi Ai and Zhixin Li, whose work “Topologically Consistent Reconstruction for Complex Indoor Structures from Point Clouds” is published by Remote Sensing. Link

Sept. 2021, Congratulations to Wenyuan Zhang and Zhixin Li, whose work “Optimal Model Fitting for Building Reconstruction from Point Clouds” is published by the IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing. Link

Jul. 2021, Congratulations to Xiaoyi, whose work “Detection and Tracking of Pedestrians Using Doppler LiDAR” is published in Remote Sensing at https://www.mdpi.com/2072-4292/13/15/2952.

Jun. 2021, Congratulations ! Yujua Zhu (co-advised with GDSP faculty) has been selected to the "2021 Esri Innovation Program Students of the Year". Her work is on "Mapping COVID-19 Pandemic and Lockdown in Chicago". The Storymap is the 2nd on the list at https://storymaps.arcgis.com/collections/e4b934a7b30b46dfbf8464e22f468ea5. For the Geodata Science for Professionals (GDSP) program at Purdue, you may visit https://www.eaps.purdue.edu/gdsp/index.html.

Apr. 2021 Congratulations ! Shuang Li, a recent Ph.D student, was awarded the Frederick N. Andrews Fellowship managed by the Graduate School.

Apr. 2021 Peter Sawall passed his Master defense. Congratulations!

Apr. 2021 Yujia Zhu passed her Master defense. Congratulations!

Apr. 2021 Qing Su passed her Master defense. Congratulations!

Apr. 2021 Ce Wang’s paper “Non-stationary Modeling of Microlevel Road-curve Crash Frequency with Geographically Weighted Regression” is published by the ISPRS International Journal of Geo-Information. Link

Apr. 2021 Ce Wang successfully defended his Master's thesis. Congratulations!

Apr. 2021 Xiaoyi Peng successfully defended his Master's thesis. Congratulations!

Mar. 2021  Agustin Quinones has received the College of Engineering Outstanding Service Scholarship, for his service to the graduate community, the School, the CoE and the University. Congratulations!

Jan. 2021 Xiangxi Tian’s paper "Comprehensive Evaluation of the ICESat-2 ATL08 Terrain Product" was accepted by IEEE Transactions on Geoscience and Remote Sensing. Congratulations!  https://ieeexplore.ieee.org/abstract/document/9334397

Dec. 2020 Zilong Yang successfully defended his Master's thesis. Congratulations!

Nov. 2020 Qinghua Li’s paper “Georeferencing with Self-Calibration for Airborne Full-Waveform Lidar Data Using Digital Elevation Model” has been accepted by Photogrammetric Engineering & Remote Sensing. 

Nov. 2020 Zhixin Li has received a scholarship award from the Roland S. Corning II Memorial Fund.

Oct. 2020 Ce Wang, Xiaoyi Peng and Yujia Zhu's work about analyzing the impact of COVID-19 on human mobility is appeared in CE IMPACT magazine- Fall 2020. Link

Aug. 2020 Ce Wang and Zhixin Li will present their papers at the coming ISPRS Virtual Event (August 31 to September 2).

Aug. 2020 Xiangxi Tian et al.'s paper “Pavement Macrotexture Determination Using Multi-View Smartphone Images” was accepted by Photogrammetric Engineering and Remote Sensing.

May. 2020 Serkan Ural's paper “Min-cut based semantic building labeling for airborne lidar data” was accepted by XXIVth ISPRS Congress.

May. 2020 Xiaoyi Peng and Ce Wang's paper “Exploration of Municipal Mobility Using Smartphone GPS Data” was accepted by XXIVth ISPRS Congress.

May. 2020 Zhixin Li and Wenyuan Zhang's paper “Holistic parametric reconstruction of building models from point clouds” was accepted by XXIVth ISPRS Congress.

May. 2020 Paul M Cleary passed his Master defense. Congratulations!

May. 2020 Kevan Tissue passed his Master defense. Congratulations!

May. 2020 Dr. Shan has been appointed as Courtesy Professor of the Department of Earth, Atmospheric and Planetary Sciences (EAPS).

Jan. 2020 Dr. Shan receives ASPRS Fairchild Photogrammetric Award.Link

Nov. 2019 Zhixin Li passed his Master defense. Congratulations!

Nov. 2019 Xiangxi Tian passed her Master defense. Congratulations!

Nov. 2019 Dr. Shan's paper “Metaheuristic pansharpening based on symbiotic organisms search optimization” was accepted by ISPRS Journal of Photogrammetry and Remote Sensing.Link

Sept. 2019 Dr. Shan's paper “A Genetic Algorithm Solution to the Gram-Schmidt Image Fusion” was accepted by International Journal of Remote Sensing.Link

Aug. 2019 “Integrating Geospatial Information Across Disciplines" has been selected as one of the winning proposals for the second round of funding in the Education Ecosystem sector of Purdue's Integrative Data Science Initiative. Link

Jun. 2019 Bo Xu and Zhixin Li's paper on urban semantic 3D reconstruction has been awarded the best paper at the IEEE/ISPRS Workshop on Large Scale Computer Vision for Remote Sensing Imagery in conjunction with CVPR 2019. Link

Apr. 2019 Yuchi Ma passed his Master defense. Congratulations!

Dec. 2018 Ke Liu passed her Master defense. Congratulations ! 

Dec. 2018, Qinghua Li passed his Ph.D defense. Congratulations !