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Staff photo Ola Ringdahl

Ola Ringdahl

Contact

E-mail
ola.ringdahl@umu.se
Location
Plan 2, MIT-huset, C241 Umeå universitet, 901 87 Umeå
Phone
+46 90 786 57 22

Works at

Affiliation
Senior research engineer at Department of Computing Science
Affiliation
Senior lecturer (associate professor) at Department of Computing Science
2019
Detection and classification of Root and Butt-Rot (RBR) in Stumps of Norway Spruce Using RGB Images and Machine Learning
Sensors, MDPI 2019, Vol. 19, (7)
Ostovar, Ahmad; Talbot, Bruce; Puliti, Stefano; et al.
2019
Evaluation of approach strategies for harvesting robots: Case study of sweet pepper harvesting
Journal of Intelligent and Robotic Systems, Springer Netherlands 2019, Vol. 95, (1) : 149-164
Ringdahl, Ola; Kurtser, Polina; Edan, Yael
2019
Using RGB images and machine learning to detect and classify Root and Butt-Rot (RBR) in stumps of Norway spruce
Forest Operations in Response to Environmental Challenges
Ringdahl, Ola; Ostovar, Ahmad; Talbot, Bruce; et al.
2018
Adaptive Image Thresholding of Yellow Peppers for a Harvesting Robot
Robotics, MDPI 2018, Vol. 7, (1)
Ostovar, Ahmad; Ringdahl, Ola; Hellström, Thomas
2017
Strategies for selecting best approach direction for a sweet-pepper harvesting robot
Towards Autonomous Robotic Systems: 18th Annual Conference, TAROS 2017, Guildford, UK, July 19–21, 2017, Proceedings, Cham: Springer 2017 : 516-525
Ringdahl, Ola; Kurtser, Polina; Edan, Yael
2016
Human Detection Based on Infrared Images in Forestry Environments
Image Analysis and Recognition (ICIAR 2016): 13th International Conference, ICIAR 2016, in Memory of Mohamed Kamel, Póvoa de Varzim, Portugal, July 13-15, 2016, Proceedings : 175-182
Ostovar, Ahmad; Hellström, Thomas; Ringdahl, Ola
2016
Operational flow of an autonomous sweetpepper harvesting robot
The 5th Israeli Conference on Robotics 2016, 13-14 April 2016, Air Force Conference Center Hertzilya, Israel
Ringdahl, Ola; Kurtser, Polina; Barth, Ruud; et al.
2015
CROPS: Clever Robots for Crops
Engineering & Technology Reference, Vol. 1, (1)
Bontsema, Jan; Hemming, Jochen; Pekkeriet, Erik; et al.
2015
Estimating the position of the harvester head: a key step towards the precision forestry of the future?
Croatian Journal of Forest Engineering, Zagreb, Croatia: Croatian Journal of Forest Engineering 2015, Vol. 36, (2) : 147-164
Lindroos, Ola; Ringdahl, Ola; Pedro, La Hera; et al.
2014
CROPS: high tech agricultural robots
The European Society of Agricultural Engineers 2014
Bontsema, J.; Hemming, J.; Pekkeriet, E.; et al.
2014
Using ROS for agricultural robotics: design considerations and experiences
RHEA-2014 : 509-518
Barth, Ruud; Baur, Jörg; Buschmann, Thomas; et al.
2013
A software framework for agricultural and forestry robots
Industrial robot, Emerald Group Publishing Limited 2013, Vol. 40, (1) : 20-26
Hellström, Thomas; Ringdahl, Ola
2013
Enhanced Algorithms for Estimating Tree Trunk Diameter Using 2D Laser Scanner
Remote Sensing, Basel: MDPI 2013, Vol. 5, (10) : 4839-4856
Ringdahl, Ola; Hohnloser, Peter; Hellström, Thomas; et al.
2012
A software framework for agricultural and forestry robotics
Proceedings of the first International Conference on Robotics and associated High-technologies and Equipment for agriculture: Applications of automated systems and robotics for crop protection in sustainable precision agriculture, Pisa: Pisa University Press 2012 : 171-176
Hellström, Thomas; Ringdahl, Ola
2012
Estimating wheel slip for a forest machine using RTK-DGPS
Journal of terramechanics, Vol. 49, (5) : 271-279
Ringdahl, Ola; Hellström, Thomas; Wästerlund, Iwan; et al.
2012
Potentials of possible machine systems for directly loading logs in cut-to-length harvesting
Canadian Journal of Forest Research, Canadian Science Publishing 2012, Vol. 42, (5) : 970-985
Ringdahl, Ola; Hellström, Thomas; Lindroos, Ola
2012
Tree diameter estimation using laser scanner
Report / UMINF, 12.20
Hellström, Thomas; Hohnloser, Peter; Ringdahl, Ola
2011
Automation in forestry: development of unmanned forwarders
Report / UMINF, 11.03
Ringdahl, Ola
2011
Path tracking in forest terrain by an autonomous forwarder
Scandinavian Journal of Forest Research, Taylor & Francis 2011, Vol. 26, (4) : 350-359
Ringdahl, Ola; Lindroos, Ola; Hellström, Thomas; et al.
2010
Path tracking for autonomous forwarders in forest terrain
Precision Forestry Symposium: developments in Precision Forestry since 2006 : 42-43
Athanassiadis, Dimitris; Bergström, Dan; Hellström, Thomas; et al.
2009
Autonomous forest vehicles: historic, envisioned, and state-of-the-art
International Journal of Forest Engineering, Vol. 20, (1) : 33-38
Hellström, Thomas; Lärkeryd, Per; Nordfjell, Tomas; et al.
2009
Real-time path planning using a simulator-in-the-loop
International Journal Vehicle Autonomous Systems, Inderscience 2009, Vol. 7, (1/2) : 56-72
Hellström, Thomas; Ringdahl, Ola
2008
A Java-based middleware for control and sensing in mobile robotics
International Conference on Intelligent Automation and Robotics 2008 : 649-654
Hellström, Thomas; Johansson, Thomas; Ringdahl, Ola
2008
A simulator driven path planner for autonomous off-road vehicles – initial results
Proceedings of the Israel Conference on Robotics (ICR08)
Hellström, Thomas; Ringdahl, Ola
2008
Autonomous forest machines: Past present and future
Report / UMINF, 08.06
Hellström, Thomas; Lärkeryd, Pär; Nordfjell, Thomas; et al.
2008
Autonomous Forest Machines: Techniques and Algorithms for Unmanned Vehicles
VDM Verlag Dr. Müller Aktiengesellschaft & Co. KG 2008
Ringdahl, Ola; Hellström, Thomas
2008
Path planning for off-road vehicles with a simulator-in-the-loop
Report / UMINF, 08.07
Hellström, Thomas; Ringdahl, Ola
2007
A Software Framework for Control and Sensing in Mobile Robotics
Report / UMINF, 07.05
Hellström, Thomas; Johansson, Thomas; Ringdahl, Ola
2007
Techniques and Algorithms for Autonomous Vehicles in Forest Environment
Report / UMINF, 07.17
Ringdahl, Ola
2006
Autonomous Navigation in Forest Environment
Proceedings from the 23rd Anual workshop of the Swedish Artificial Intelligence Society (SAIS06), : -
Ringdahl, Ola; Hellström, Thomas
2006
Development of an Autonomous Forest Machine for Path Tracking
Field and Service Robotics: Results of the 5th International Conference, New York: Springer 2006 : 603-614
Hellström, Thomas; Johansson, Thomas; Ringdahl, Ola
2006
Follow the Past: a Path Tracking Algorithm for Autonomous Vehicles
International Journal of Vehicle Autonomous Systems, Inderscience 2006, Vol. 4, (2/3/4) : 216-224
Hellström, Thomas; Ringdahl, Ola
2006
Path tracking and localization techniques for forest environment.
Proceedings of the Israel Conference on Robotics (ICR06)
Hellström, Thomas; Ringdahl, Ola; Siddiqui, Arsalan
2005
Autonomous Path Tracking Using Recorded Orientation and Steering Commands
Proceedings of Towards Autonomous Robotic Systems 2005 (TAROS05)
Hellström, Thomas; Ringdahl, Ola
2005
Development of an Autonomous Path Tracking Forest Machine: a status report
Report / UMINF, 05.08
Georgsson, Fredrik; Hellström, Thomas; Johansson, Thomas; et al.
2005
Follow the Past - A Path Tracking Method Using Recorded Orientation and Steering Commands.
Proceedings of The Third Swedish Workshop on Autonomous Robotics (SWAR05) : -
Ringdahl, Ola; Hellström, Thomas
2004
Follow The Past: a Path Tracking Algorithm for Autonomous Forest Vehicles
Report / UMINF, 11
Hellström, Thomas; Ringdahl, Ola
2003
Path Tracking and Obstacle Avoidance for Forest Machines
UMNAD, 454/03
Ringdahl, Ola
View publications in DiVA

Research groups

Group member
Intelligent Robotics