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Mathematical Problems in Engineering
Volume 2012 (2012), Article ID 240476, 14 pages
http://dx.doi.org/10.1155/2012/240476
Research Article

Robot Navigation Control Based on Monocular Images: An Image Processing Algorithm for Obstacle Avoidance Decisions

Department of Information Systems and Computing, Brunel University, Uxbridge UB8 3PH, UK

Received 21 June 2012; Accepted 10 August 2012

Academic Editor: Zidong Wang

Copyright © 2012 William Benn and Stanislao Lauria. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper covers the use of monocular vision to control autonomous navigation for a robot in a dynamically changing environment. The solution focused on using colour segmentation against a selected floor plane to distinctly separate obstacles from traversable space: this is then supplemented with canny edge detection to separate similarly coloured boundaries to the floor plane. The resulting binary map (where white identifies an obstacle-free area and black identifies an obstacle) could then be processed by fuzzy logic or neural networks to control the robot’s next movements. Findings show that the algorithm performed strongly on solid coloured carpets, wooden, and concrete floors but had difficulty in separating colours in multicoloured floor types such as patterned carpets.