Authors:
Arnau Ramisa
1
;
Ramón López de Mántaras
1
;
David Aldavert
2
and
Ricardo Toledo
2
Affiliations:
1
Artificial Intelligence Research Institute, Spain
;
2
Computer Vision Center, Spain
Keyword(s):
Affine covariant regions, local descriptors, interest points, matching, robot navigation, panoramic images.
Related
Ontology
Subjects/Areas/Topics:
Image Processing
;
Informatics in Control, Automation and Robotics
;
Mobile Robots and Autonomous Systems
;
Robotics and Automation
;
Vision, Recognition and Reconstruction
Abstract:
Invariant (or covariant) image feature region detectors and descriptors are useful in visual robot navigation because they provide a fast and reliable way to extract relevant and discriminative information from an image and, at the same time, avoid the problems of changes in illumination or in point of view. Furthermore, complementary types of image features can be used simultaneously to extract even more information. However, this advantage always entails the cost of more processing time and sometimes, if not used wisely, the performance can be even worse. In this paper we present the results of a comparison between various combinations of region detectors and descriptors. The test performed consists in computing the essential matrix between panoramic images using correspondences established with these methods. Different combinations of region detectors and descriptors are evaluated and validated using ground truth data. The results will help us to find the best combination to use i
t in an autonomous robot navigation system.
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