These talks will be self-contained presentations of mathematical concepts
and theorems. They are intended to be accessible to all mathematics students.
Tuesday 9th September, 2003
1:00 pm, Lecture Theatre S14
Range Data Segmentation for Robotic Applications
Mr Geoffrey Taylor
Department of Electrical and Computer Systems Engineering
Humanoid robots are a natural vehicle for human-machine cooperation in
an office/domestic environment. Our research aims to explore the
necessary building blocks for a humanoid robot to perform interactive
manipulation tasks (grasping and placing objects) in this type of
unstructured setting, with a focus on visual perception. An important
component is the robot's ability to locate and classify various
objects
(cups, bottles, books etc) required to complete a given task. For this
purpose, we developed a novel range data segmentation algorithm
capable
of identifying geometric primitives (planes, cylinders, cones and
spheres) in the robot's workspace. Our split-and-merge segmentation
algorithm is based on estimation of the number of non-zero principal
curvatures and local convexity at each range data element.
Experimental
comparison with existing methods shows that our approach has greater
robustness to noise and successfully models a variety of domestic
objects. We will also present an overview of our related robotics
research, including visually guided control of robotic limbs, robust
range data acquisition and object tracking.