4DM presents and exhibits at the CDA 2010 Annual Conference, Oct 4th–6th in Niagara Falls, Ontario

The Canadian Dam Association 2010 Annual Conference will take place in Niagara Fall, Ontario. 4DM is presenting two papers on at the conference; “Application of LiDAR Technology for Hydroelectric Operations” and “Niagara Pump Generating Station Inundation Mapping and Consequence Analysis with ArcGIS and MIKE 21″. These papers highlight examples of two projects where 4DM and OPG have worked collaboratively together over the past year. 4DM will also be exhibiting at the conference showcasing expertise in water resources, environment and property mapping. Attendees at the conference will have an opportunity to learn more about 4DM’s products and services.

Dr. Zhen (John) Xiong completed post doctoral work at the University of New Brunswick and joins 4DM Inc. enhancing the company’s photogrammetry and remote sensing capabilities

Dr Zhen Xiong holds a PhD degree in Geomatics from the University of New Brunswick, where he specialized in photogrammetry and remote sensing.

Dr. Xiong has over fifteen years of experience in the areas of photogrammetry and remote sensing. He finished twenty two engineering projects and twenty eight research projects in photogrammetry, remote sensing, surveying, and mapping. He developed more than twenty software programs, and two patent pending techniques in DEM generation, image orthorectification, image matching and sensor modeling. Dr. Xiong is the co-author of more than thirty peer-reviewed papers and book chapters. He is the first place co-recipient of 2009 ASPRS president award for “An Initial Study on Vehicle Information Extraction from Single Pass Quickbird Satellite Imagery,” PE&RS, (74) 11, 1401-1411.

Dr. Xiong has extensive experience in building extraction from both optical imagery and LiDAR point cloud. He developed a program for automatic building extraction from LiDAR point cloud based on elevation, slope, and azimuth features. Prior to that, he developed a program to extract buildings from stereo IKONOS images automatically. He has published several papers on building extraction from remote sensing data.

Dr. Xiong joined 4DM inc. as a senior remote sensing scientist with his main focus is on technical development of both active remote sensing and passive remote sensing, such as LiDAR data processing, RADARSAT image processing, multispectral classification, DEM generation and image orthorectification.