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360° Depth Estimation from Multiple Fisheye Images with Origami Crown Representation of Icosahedron Bird’s-eye View Image Generation with Camera Malfunction in Irradiation Environment Simultaneous tele-visualization of construction machine and environment using body mounted cameras Visualization of Obstacles on Bird’s-eye ViewUsing Depth Sensor for Remote Controlled Robot Acceptance and Practical Use of Assistive Technologies for Frail Seniors and Caregivers: Interview Surveys on Nursing Homes

Ren Komatsu

Robotics Projects & Research Papers

Ren Komatsu

Robotics Projects & Research Papers

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Publication

Octave Deep Plane-Sweeping Network: Reducing Spatial Redundancy for Learning-Based Plane-Sweeping Stereo

In this paper, we propose the octave deep plane-sweeping network (OctDPSNet). OctDPSNet is a novel learning-based plane-sweeping stereo, which drastically reduces the required GPU memory and computation time while achieving…

Publication

Free viewpoint image generation system using fisheye cameras and a laser rangefinder for indoor robot teleoperation

In robot teleoperation, a lack of depth information often results in collisions between the robots and obstacles in its path or surroundings. To address this issue, free viewpoint images can…

Publication

Stereo camera visual SLAM with hierarchical masking and motion-state classification at outdoor construction sites containing large dynamic objects

At modern construction sites, utilizing GNSS (Global Navigation Satellite System) to measure the real-time location and orientation (i.e. pose) of construction machines and navigate them is very common. However, GNSS…

Publication

Path Planning for Localization of Radiation Sources Based on Principal Component Analysis

In this paper, we propose a path planning method for the localization of radiation sources using a mobile robot equipped with an imaging gamma-ray detector, which has a field of…

Publication

Leakage Position Estimation of Cooling Water Using a Stereo Camera for Fukushima Daiichi Nuclear Power Plant

In this study, a new method of estimating the leakage positions of cooling water using a stereo camera for the Fukushima Daiichi Nuclear Power Plant (FDNPP) is proposed. A stereo…

Publication

Radiation distribution estimation with a non-directional detector using a plane source model

The Fukushima Daiichi nuclear disaster occurred during the Great East Japan Earthquake. Inside the reactor, materials with high radioactivity were scattered entirely, leading to a severe condition that restricted the…

Publication

Applying Albedo Estimation and Implicit Neural Representations to Well-Posed Shape From Shading

We present a method that improves the accuracy of depth maps by combining albedo estimation and implicit neural representations to the well-posed shape from shading. Because the estimation of depth…

Selected Papers

ROBOMECH Journal 2020: Free Viewpoint Image Generation System Using Fisheye Cameras and a Laser Rangefinder for Indoor Robot Teleoperation

Robot teleoperation is often challenging due to lack of depth information, which can lead to collisions with obstacles. Free viewpoint images can address this issue by providing operators with a…

Selected Papers

IEEE Access 2019: Octave Deep Plane-sweeping Network: Reducing Spatial Redundancy for Learning-based Plane-sweeping Stereo

We propose the octave deep plane-sweeping network (OctDPSNet). OctDPSNet is a novel learning-based plane-sweeping stereo, which drastically reduces the required GPU memory and computation time while achieving a state-of-the-art depth…

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Research

  • Robotics for Constructions
  • Robotics for Nuclear Application
  • Dense Depth Prediction Using Multiple Fisheye Cameras
  • Free Viewpoint Image Generation for Robot Teleoperation

Selected Papers

  • IROS 2020: 360° Depth Estimation from Multiple Fisheye Images with Origami Crown Representation of Icosahedron
  • ROBOMECH Journal 2020: Free Viewpoint Image Generation System Using Fisheye Cameras and a Laser Rangefinder for Indoor Robot Teleoperation
  • IEEE Access 2019: Octave Deep Plane-sweeping Network: Reducing Spatial Redundancy for Learning-based Plane-sweeping Stereo

Ren Komatsu

Robotics Projects & Research Papers

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