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Geoinformatics Lab
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The lab studies environmental change affecting people and nature across broad space and time.
AboutAbout the lab
Observing and analyzing land and the environment.
The Geoinformatics Lab studies methods for observing, analyzing, and evaluating the current state and changes of land and the environment, for the purposes of environmental conservation and disaster prevention.
It uses spatial information technologies such as satellite remote sensing, 3D photogrammetry, laser surveying, and geographic information systems.
Geographic information from regional to global scales and physical information on the atmosphere and on land and sea surfaces are essential basic data for considering harmony between humans and the natural environment.
The lab aims to clarify the principles and methods for collecting, processing, and providing this information.
Key terms
- Synthetic aperture radar
- A radar that uses radio waves to produce images of the ground surface, even through clouds and at night.
- Point cloud
- A huge collection of points with 3D coordinates, obtained from laser surveying or photographs.
- Walkability
- An index that objectively measures how walkable a city is, based on factors such as land-use mix and intersection density.
NewsLab news
Professor Junichi Susaki received the Best Reviewer of the ISPRS XXV Congress award
A master's student received the Presentation Paper Award at the Autumn Academic Conference of the Japan Society of Photogrammetry and Remote Sensing
A doctoral student received the Best Student Paper Award at APSAR 2025
Assistant Professor Yoshie Ishii received the Green Asia Award at the Asian Conference on Remote Sensing
ResearchResearch themes
The lab works with geographic information from regional to global scales and physical information on the atmosphere and on land and sea surfaces. It studies a series of methodologies (monitoring, modeling, prediction, planning, and management) along with the satellite remote sensing and geographic information systems that underlie them.
*Illustrative imageMeasuring ground motion with satellite radar
The lab develops differential InSAR methods that estimate the amount of ground deformation from synthetic aperture radar images taken by satellites at multiple times.
*Illustrative imageReconstructing buildings from 3D point clouds
The lab has proposed an algorithm that automatically generates 3D building models even in Japan's old townscapes, where buildings with inclined roofs stand densely packed. It also applies the algorithm to estimating the degree of enclosure, a measure of how enclosed a space feels, and to automatically extracting damaged buildings.
*Illustrative imageExtracting individual features from photographs
The lab has worked on methods for efficiently modeling buildings by terrestrial close-range photogrammetry.
*Illustrative imageMeasuring how walkable a city is
Focusing on walkability and its evaluation indices, which capture how walkable an area is objectively and across space, the lab uses geographic information systems to analyze the environmental factors associated with walking activity.
MembersFaculty
The members of the Geoinformatics Lab consist of faculty, technical staff, secretaries, and doctoral, master's, and undergraduate students.
- ProfessorJunichi Susaki
- Assistant ProfessorYoshie Ishii
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Minsk city (Belarus), Sentinel-2 satellite image” European Space Agency / CC BY-SA 3.0 igo (cropped)
- Measuring ground motion with satellite radar: “Volcanic uplift” Envisat satellite / CC BY-SA 3.0 igo (cropped)
- Reconstructing buildings from 3D point clouds: “Lidar 3D Model of London” Environment Agency / CC BY-SA 4.0 (cropped)
- Extracting individual features from photographs: “Aerial photograph of Foster City, CA” Mertbiol / CC0 (cropped)
- Measuring how walkable a city is: “Leith Walk - Lorne Street corner - geograph.org.uk - 7578433” Richard Webb / CC BY-SA 2.0 (cropped)
- Related lab (Landscape Design Lab): “Croix parc mallet stevens tunnel” Velvet / CC BY-SA 4.0 (cropped)
- Related lab (Earth Resource Systems Lab): “Mutnovsky geothermal power plant” -= Nikita Zhuravlev = / CC BY-SA 4.0 (cropped)
- Related lab (Environmental Quality Prediction Lab (Research Center for Environmental Quality Management)): “EPA GULF BREEZE LABORATORY, CHEMISTRY LAB. THE CHEMIST IS TESTING WATER SAMPLES FOR PESTICIDES - NARA - 546277” William C. Shrout / Public domain (cropped)
- Related lab (Disaster Prevention Hydraulic Engineering Lab): “Flood in River Bagmati” Gaurav Dhwaj Khadka / CC BY-SA 4.0 (cropped)
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