Illumination Color from the Blurred Inter-reflection of a Reference Nose. - Mohamed Abdellatif; Yutaka Tanaka; Akio Gofuku; Isaku Nagai (ACCV (1), 1998)

Color Constancy Using the Inter-Reflection from a Reference Nose. - Mohamed Abdellatif; Yutaka Tanaka; Akio Gofuku; Isaku Nagai (Int. J. Comput. Vis., 2000)

Mobile Robot with Floor Tracking Device for Localization and Control. - Isaku Nagai; Yutaka Tanaka (J. Robotics Mechatronics, 2007)

Noncontact position estimation device with optical sensor and laser sources for mobile robots traversing slippery terrains. - Isaku Nagai; Keigo Watanabe; Keiji Nagatani; Kazuya Yoshida (IROS, 2010)

Development of a Visual Odometry System for a Wheeled Robot on Loose Soil using a Telecentric Camera. - Keiji Nagatani; Ayako Ikeda; Genya Ishigami; Kazuya Yoshida; Isaku Nagai (Adv. Robotics, 2010)

A nonholonomic control method for stabilizing an X4-AUV. - Zainah Md. Zain; Keigo Watanabe; Kiyotaka Izumi; Isaku Nagai (Artif. Life Robotics, 2011)

Propulsion movement control using CPG for a Manta robot. - Masaaki Ikeda; Keigo Watanabe; Isaku Nagai (SCIS&ISIS, 2012)

Tip-over stability prediction for a holonomic omnidirectional transport mobile robot. - M. Juhairi Aziz Safar; Keigo Watanabe; Shoichi Maeyama; Isaku Nagai (SCIS&ISIS, 2012)

Underactuated control for a fire truck-type mobile robot using an invariant manifold theory. - Keigo Watanabe; Yuka Ueda; Isaku Nagai (SCIS&ISIS, 2012)

A study of tipping stability for omnidirectional mobile robot with active dual-wheel caster assemblies. - M. Juhairi Aziz Safar; Keigo Watanabe; Shoichi Maeyama; Isaku Nagai (Artif. Life Robotics, 2012)

Exponential Stabilization of Second-Order Nonholonomic Chained Systems. - Zainah Md. Zain; Keigo Watanabe; Kiyotaka Izumi; Isaku Nagai (ICIRA (2), 2013)

A CPG design of considering the attitude for the propulsion control of a Manta robot. - Masaaki Ikeda; Shigeki Hikasa; Keigo Watanabe; Isaku Nagai (IECON, 2013)

Tip-over stability control for a holonomic omnidirectional mobile robot with active dual-wheel caster assemblies using SGCMG. - M. Juhairi Aziz Safar; Keigo Watanabe; Shoichi Maeyama; Isaku Nagai (IROS, 2013)

Study on mobile mechanism of a climbing robot for stair cleaning: a translational locomotion mechanism and turning motion. - Takahisa Kakudou; Keigo Watanabe; Isaku Nagai (Artif. Life Robotics, 2013)

A discontinuous exponential stabilization law for an underactuated X4-AUV. - Zainah Md. Zain; Keigo Watanabe; Kiyotaka Izumi; Isaku Nagai (Artif. Life Robotics, 2013)

Positioning device for outdoor mobile robots using optical sensors and lasers. - Isaku Nagai; Genki Yamauchi; Keiji Nagatani; Keigo Watanabe; Kazuya Yoshida (Adv. Robotics, 2013)

Controllers based on an invariant manifold approach for stabilizing a nonholonomic mobile robot. - Yin Yin Aye; Keigo Watanabe; Shoichi Maeyama; Isaku Nagai (SCIS&ISIS, 2014)

An error model of chained form with two inputs for a generalized stabilization problem. - Keigo Watanabe; Tsuyoshi Goto; Kimiko Motonaka; Shoichi Maeyama; Isaku Nagai (SCIS&ISIS, 2014)

A pectoral fin analysis for diving rajiform-type fish robots by fluid dynamics. - Masaaki Ikeda; Shigeki Hikasa; Keigo Watanabe; Isaku Nagai (Artif. Life Robotics, 2014)

Motion Analysis of a Manta Robot for Underwater Exploration by Propulsive Experiments and the Design of Central Pattern Generator. - Masaaki Ikeda; Shigeki Hikasa; Keigo Watanabe; Isaku Nagai (Int. J. Autom. Technol., 2014)

Image-based neural network controllers for mobile robots to track a human. - Masaaki Ikeda; Hikaru Fujioka; Keigo Watanabe; Shoichi Maeyama; Isaku Nagai (ASCC, 2015)

Laser odometry taking account of the tilt on the laser sensor. - Rui Saito; Keigo Watanabe; Isaku Nagai (ASCC, 2015)

The design and production of thrusters for an AUV without rudders. - Ge Ri Le Tu; Keigo Watanabe; Isaku Nagai (ASCC, 2015)

Control of the position and attitude of a tethered quadrotor considering the influence of a tether. - Keigo Watanabe; Yusuke Ouchi; Keisuke Kinoshita; Isaku Nagai (ASCC, 2015)

Comparison of an X4-AUV performance using a direct Lyapunov - PD controller and backstepping approach. - Zainah Md. Zain; NurFadzillah Harun; Keigo Watanabe; Isaku Nagai (ASCC, 2015)

Closed-loop control experiments for a blimp robot consisting of four-divided envelopes. - Keigo Watanabe; Naoto Okamura; Isaku Nagai (IECON, 2015)

Path tracking by a mobile robot equipped with only a downward facing camera. - Isaku Nagai; Keigo Watanabe (IROS, 2015)

Generation of time-varying target lines for an automatic parking system using image-based processing. - Yin Yin Aye; Keigo Watanabe; Shoichi Maeyama; Isaku Nagai (ROBIO, 2015)

Invariant manifold-based stabilizing controllers for nonholonomic mobile robots. - Yin Yin Aye; Keigo Watanabe; Shoichi Maeyama; Isaku Nagai (Artif. Life Robotics, 2015)

Development of an omnidirectional mobile platform with a rocker-bogie suspension system. - Yuki Mori; Keigo Watanabe; Isaku Nagai (IECON, 2016)

Path estimation of a shopping cart using a particle filter and an environment map. - Daiki Sasakura; Keigo Watanabe; Isaku Nagai (IECON, 2016)

Development of a camera-mounted tethered Quadrotor for inspecting infrastructures. - Keigo Watanabe; Keisuke Kinoshita; Isaku Nagai; Maki K. Habib (IECON, 2016)

A Localization Method Using a Dynamical Model and an Extended Kalman Filtering for X4-AUV. - Keigo Watanabe; Takanori Yamaguchi; Isaku Nagai (ICIRA (1), 2017)

System Construction for Distributedly Controlling the Thrusters of X4-AUV. - Xiongshi Xu; Keigo Watanabe; Isaku Nagai (ICIRA (1), 2017)

Attitude control of a camera mounted-type tethered quadrotor for infrastructure inspection. - Keigo Watanabe; Nao Moritoki; Isaku Nagai (IECON, 2017)

An automatic parking system using an optimized image-based fuzzy controller by genetic algorithms. - Yin Yin Aye; Keigo Watanabe; Shoichi Maeyama; Isaku Nagai (Artif. Life Robotics, 2017)

Influence on the propulsive performance due to the difference in the fin shape of a robotic manta. - Masaaki Ikeda; Kota Mikuriya; Keigo Watanabe; Shigeki Hikasa; Yukito Hamano; Isaku Nagai (Artif. Life Robotics, 2017)

Development and Flight Experiments of a Bluff-bodied X4-Blimp. - Keigo Watanabe; Kenjiro Niwa; Isaku Nagai (ARSO, 2019)

A Method of Recognizing Obstacles for a Small-sized Autonomous Underwater Vehicle X4-AUV. - Keigo Watanabe; Shingo Sugano; Isaku Nagai (ARSO, 2019)

An improvement of flight performance in the level flight of tilted quadrotors by attaching a fixed-wing. - Yoshikazu Nakamura; Atsushi Arakawa; Keigo Watanabe; Isaku Nagai (Artif. Life Robotics, 2019)

Indoor Self-Localization Using Multiple Magnetic Sensors. - Isaku Nagai; Jun Sakai; Keigo Watanabe (J. Robotics Mechatronics, 2019)

Formulation of Fault-tolerant Control for Hyper-redundant Multi-copters. - Takuro Inohara; Keigo Watanabe; Isaku Nagai (ROBIO, 2021)

Load-swing suppression control using an omnidirectionally movable multi-rotor in 2D-horizontal plane. - Ryota Mino; Shinsuke Kanda; Keigo Watanabe; Isaku Nagai (Artif. Life Robotics, 2021)

Feedback linearization control for a tandem rotor UAV robot equipped with two 2-DOF tiltable coaxial-rotors. - Xiongshi Xu; Keigo Watanabe; Isaku Nagai (Artif. Life Robotics, 2021)

Flight control system design for a tandem rotor UAV robot in the presence of wind field disturbances. - Xiongshi Xu; Keigo Watanabe; Isaku Nagai (Artif. Life Robotics, 2021)

Anti-disturbance control of a quadrotor manipulator with tiltable rotors based on integral sliding mode control. - Shilin Yi; Keigo Watanabe; Isaku Nagai (Artif. Life Robotics, 2021)

Wall-surface Running Control of a Tandem Type UAV with Tiltable Rotors. - Keigo Watanabe; Hideaki Komura; Xiongshi Xu; Isaku Nagai (SICE, 2023)