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Mizutani Lab
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A lab that uses radar and lasers to visualize what lies inside roads and bridges.
AboutAbout the lab
Building a better future with signal processing.
Using sensing technology, signal processing, and machine learning, the Mizutani Lab studies systems that detect and diagnose infrastructure in real time.
The targets are road surfaces and underground areas, bridges, tunnels, and railways across the country.
From data measured with ground-penetrating radar, mobile mapping laser scanners, and high-resolution cameras, the lab produces information on both the surface and the interior of infrastructure.
At the Komaba Research Campus Open House, the lab also holds a hands-on event using radar.
Key terms
- Ground-penetrating radar
- A device that sends radio waves into the ground and examines what lies underground from the waves that bounce back
- Mobile mapping laser scanner
- A technology that uses a laser device mounted on a vehicle or similar platform to measure the three-dimensional shape of its surroundings while moving
- Digital signal processing
- A technology that uses computers to process signals measured by sensors, for example to remove noise or extract features
NewsLab news
A paper on automatic evaluation of overhead catenary wire shape has been accepted by Results in Engineering
A paper by a doctoral student and Associate Professor Mizutani has been published in IEEE GRSL
A doctoral student won First Prize at the OHOW student competition
A paper on automatic evaluation of road surface cracks has been published in a Wiley journal
ResearchResearch themes
The lab aims at "large-scale construction of quantitative infrastructure information through real-time spatial analysis." It develops systems that detect and diagnose roads, underground areas, bridges, tunnels, and railways using radar, lasers, and cameras together with AI and digital signal processing.
*Illustrative imageInvestigating beneath roads with ground-penetrating radar
Targeting roads across the country, the lab uses ground-penetrating radar to investigate beneath the road surface and underground, producing information about the interior of infrastructure that cannot be seen from the outside.
*Illustrative imageMeasuring bridges and tunnels with lasers and cameras
Using mobile mapping laser scanners and high-resolution cameras, the lab measures the surfaces of bridges, tunnels, and other structures at large scale and compiles the results as infrastructure information.
*Illustrative imageAutomatically evaluating railway overhead catenary wires
Railways are also a target of measurement. The lab studies methods for automatically evaluating the shape of overhead catenary wires on electrified railways in India.
*Illustrative imageInterpreting data with signal processing and AI
The lab analyzes the measured data with digital signal processing, machine learning, and deep learning, making it possible to detect and diagnose infrastructure quantitatively and in real time.
MembersFaculty
The members of the Mizutani Lab include faculty, project researchers, secretaries, international researchers, commissioned and collaborative researchers, and doctoral and master's students.As of 2025
- Associate ProfessorTsukasa MizutaniPublications ↗
- Project Assistant ProfessorTomoaki TakedaPublications ↗
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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: “Ouster OS1-64 lidar point cloud of intersection of Folsom and Dore St, San Francisco” Daniel L. Lu / CC BY 4.0 (cropped)
- Investigating beneath roads with ground-penetrating radar: “Using ground-penetrating radar - Flickr - The Official CTBTO Photostream” The Official CTBTO Photostream / CC BY 2.0 (cropped)
- Measuring bridges and tunnels with lasers and cameras: “Austin Texas LiDAR Point Cloud (Highway 183)” Rebecca equator / CC BY-SA 4.0 (cropped)
- Automatically evaluating railway overhead catenary wires: “Memari railway station on the Howrah–Bardhaman main line 03” Pinakpani / CC BY-SA 4.0 (cropped)
- Interpreting data with signal processing and AI: “Mars2020-RIMFAX-sample-radargram-glacier-Svalbard-full” Nasa / Public domain (cropped)
- Related lab (コンクリート研究室): “Dogawa Dam” 河川一等兵 / CC BY-SA 4.0 (cropped)
- Related lab (酒井研究室): “20mm-aggregate” Billbeee at English Wikipedia / CC BY 3.0 (cropped)
- Related lab (建設マネジメント/開発システム研究室): “Tsurumi-tsubasa-bridge” LERK / CC BY 2.5 (cropped)
- Related lab (岸研究室): “Detail of vertical crack in concrete retaining wall at Medway Park Sports Centre, Gillingham, Kent, England” Sunolafjagtenben-hur / CC0 (cropped)
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