Cleaning a white board with REEM

David Martínez reports on his Master Thesis about Automatic Control and Robotics

Hello! I’m David Martínez, a Master’s degree student in Automatic Control and Robotics in the UPC. I joined the REEM@IRI team to do my master thesis in robotics. REEM@IRI is a collaboration between PAL Robotics , IRI and AESS to develop the skills needed by the humanoid service robot REEM – from the Barcelonese company PAL Robotics – to take part in the Robocup@HOME, competition, where robots have to solve everyday tasks, which include people recognition and speech interaction, robot navigation in a domestic environment, and object recognition and grasping.

Robot REEM from PAL Robotics, used in this project

For my master thesis, I worked on the open challenge of the Robocup@HOME where each team can demonstrate new and different skills. We chose to develop surface cleaning skills, which included erasing painted surfaces and cleaning small objects, like lentils or rice.

The method developed has 3 different parts: the perception to get a representation of the environment, a set of actions that are used to clean, and a planner to select the best action sequence for each state. REEM was equipped with a RGBD camera for the perception, and cleaning tools, like for example a cloth, to perform the actions successfully.

– To get observations of the environment, a RGBD camera is used, which provide both depth and color information. Depth is used to segment the dirty surfaces, while color is used to detect the dirty areas and represent them with a set of ellipses.

Perception made

– We also defined a set of actions to clean, which consist in sequences of movements over the dirty areas to clean them. Each action gets better results with different types of dirty areas, making all actions useful for some kind of dirt.

Actions planned to clean a round drawing on the board

– We wanted to choose good action sequences to minimize the time spent cleaning, but we had uncertainty in the perceptions, and also stochastic actions. We decided to used PRADA planner, a fast probabilistic planner, to select good sequences for any given dirty surface. It improved significantly the results in complex tasks over using simple reactive methods.

The final result can be seen here:

REEM cleaning a whiteboard

It has been a very good experience being part of the REEM@IRI team. I have had the opportunity to learn a lot of things, worked with advanced real robots capable of performing many skills, met great people and I have had a very good time. I would like to thank everyone in the team, especially Dr. Ricardo Téllez from PAL Robotics, and Doctor Guillem Alenya from IRI who did a great job coordinating the efforts of the team, and I am looking forward to see what awesome skills we will make for future Robocup competitions.

Cheers,
David

For more information on this project, please visit our blog and contact page to get in touch with us.

Related articles
SAFE-LY Project: Improving Patient Safety with Healthcare Robotics
Read More

SAFE-LY Project: Improving Patient Safety with Healthcare Robotics

The healthcare sector is increasingly recognising the importance of robotics in enhancing patient safety and care. With the global healthcare…
PROCARED blog by PAL Robotics
Read More

PRO-CARED pilots: robot ARI as education robot helping students with Catalan language

Integrating robots into education brings a number of potential benefits to the sector, such as enhancing the learning experience for…
Banner for the European Robotics Forum (ERF) 2024 event, highlighting the theme 'Let's talk about collaboration' set against a dark blue background. The event is scheduled from 13-15 March in Rimini, Italy, with the logo of EU Robotics and a decorative pattern of stars in varying sizes and colors. Text also mentions PAL as the gold sponsor of the event.
Read More

European Robotics Forum – ERF2024

The most prominent conference in the European robotics community, the European Robotics Forum, is back for its 15th edition, taking…