Portofolio of Kandai Watanabe


I am a Ph.D. student at University of Colorado Boulder. My interest lies in the field between Control Theory and Reinforcement Learning, to make robots learn motions.

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About Me

I am a 1st year Ph.D student in Human Interaction Robotics (HIRO) Group at University of Colorado Boulder. Before joining the group, I got my bachelor’s and master’s degree at Keio University, where I gained my research experience at Takahashi Laboratory.

At Takahashi lab, my research was to design and build a controller for a drone so that people do no get virtual reality sickness when they control it in first-person view (FPV). You can check the paper here. My strength is the ability to build end-to-end systems from hardware to software (also including human in the loop).

Now at CU Boulder, my research is about motion learning and task learning for robots. Especially, I am interested in the intersection between Control Theory and Reinforcement Learning. In other words, intersection between classic model-based control and computer science approach.


Action acquisition using Bayesian optimization

bopt_dmp Make the robot learn a motion in small number of iterations (30 iterations)

Suppression of Virtual Reality Sickness on Drone

Head-synced Drone Control for Reducing Virtual Reality Sickness Kandai Watanabe, Masaki Takahashi, Journal of Intelligent & Robotic Systems (2019): 1-12.


Developed a drone controller that aims to suppress the movement that may induce the virtual reality sickness.

Image Recognition of an Eggplant for Manipulation Task


Implemented a convolutional neural network to detect an eggplant. Implemented on ROS. It can detect an object, get the depth information and the likelihood of the object.

Simulation of Inverted Pendulum using a simple Neural Network

YouTube Link


The neural network was used to decide on when to transition from the unstabilized controller to the stabilized controller.

CFD Analysis of Water Bubble

YouTube Link

The circle represents the water bubble. The simulation represents how the water bubble hits the surface. Navier-Stoke Equation with the assumption of constant viscosity was used as a simulation.

Websites for Developmental Disorders

https://h-navi.jp/ webpage I developed an advertising webpage, introducing facilities friendly to people with developmental disabilities.