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Arai Lab
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A lab that tackles social problems with robots that use vision.
AboutAbout the lab
Robots that see and grasp, tackling social problems.
The Arai Lab (Intelligent Robotics Lab) uses robotics, control theory, machine learning, and image processing to research robot systems that solve social problems.
The lab's research centers on the core technologies robots need to handle objects, such as 3D measurement, environment and object recognition, grasp planning, and visual servoing, as well as robot systems that integrate them.
The lab also applies this set of technologies to research on biological image recognition and multi-agent systems.
The lab builds systems such as automated disassembly of e-waste and bin picking, in which a robot grasps and removes objects from a pile.
Key terms
- Active visual servoing
- A theory proposed by this lab that extends visual servoing, a framework for controlling robots using visual information.
- Bin picking
- The task of grasping and removing one object from a pile of objects. It is needed in logistics warehouses and factory production lines.
- E-waste
- Waste from electrical and electronic components. The amount discarded is increasing every year, and a higher recycling rate is needed.
NewsLab news
A master's student won the Sponsor Award at SICE FESTIVAL 2026
A fourth-year undergraduate student won an Excellence Award at ROOB2026
The lab's research won 2nd place in the Manufacturing DX category of the NEDO Challenge
A master's student won the Outstanding Poster Award at the master's mid-term presentation
A master's student won an Outstanding Presentation Award at the SICE System Integration Division Annual Conference (SI2025)
ResearchResearch themes
The lab develops robot systems that solve social problems, drawing on robotics, control theory, machine learning, and image processing. In particular, it studies the core technologies robots need to handle objects, such as 3D measurement, environment and object recognition, grasp planning, and visual servoing, as well as robot systems that integrate them.
*Illustrative imageE-Waste Disassembly (Bolt Removal)
A camera, a projector, and an electric screwdriver are mounted on the tip of a robot arm, and the robot removes bolts automatically under vision control. Aiming for a general-purpose disassembly system that needs no positioning jigs, the lab achieved automated removal by positioning the electric screwdriver with active visual servoing.
*Illustrative imageE-Waste Disassembly (Wire Cutting)
A camera and a cutting tool are mounted on the tip of a robot arm, and the system recognizes wires and cutting positions and then cuts them. Deformable objects such as wires have no CAD data and are hard to recognize, but the lab achieved automated cutting using instance segmentation and keypoint detection.
*Illustrative imagePicking Transparent and Glossy Objects
To have robots pick up glossy or highly transparent objects that are difficult to measure in 3D, the lab studies methods for 3D reconstruction of a scene. 3D reconstruction is performed from images taken from multiple positions by a hand-eye camera, and the robot picks up the objects based on the result. Because it uses a monocular camera, it can be implemented at low cost.
*Illustrative imageBin Picking and Kitting
This is a robot system that grasps one object from a pile and arranges it at a specified position. It is considered essential for automating logistics warehouses and for high-mix low-volume production in factories, and the lab conducts research on 3D measurement and recognition, grasping, motion planning, and active visual servoing.
MembersFaculty
The members of the Arai Lab are faculty, master's students, and undergraduate students.As of 2026
- Associate ProfessorShogo Arai
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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: “NIST Dexterous Manipulation Testbed ( )” National Institute of Standards and Technology / Public domain (cropped)
- E-Waste Disassembly (Bolt Removal): “Revox B215 - e-waste - old capacitors” Retired electrician / CC0 (cropped)
- E-Waste Disassembly (Wire Cutting): “Flush cutting wire cutters” Twotonetoo / CC BY-SA 4.0 (cropped)
- Picking Transparent and Glossy Objects: “Amazon Robot Picking Up Box” Ckalafatis24 / CC BY-SA 4.0 (cropped)
- Bin Picking and Kitting: “Robot Arm (NIH BioArt 457)” Courtesy of NIAID Ryan Kissinger / Public domain (cropped)
- Related lab (岡田研究室): “Harmonic Analysis of Impeller” Ajay B. Harish / CC BY-SA 4.0 (cropped)
- Related lab (松崎研究室): “HD2-400 x 3 Molding Press” Sam D. Wilbur / CC BY-SA 4.0 (cropped)
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