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Authors: Yuan Liu and Paul Siebert

Affiliation: University of Glasgow, United Kingdom

ISBN: 978-989-758-003-1

Keyword(s): Feature Extraction, Local Matching, Object Detection, Edge Detection, Edge Contour Labelling, Segmentation Features, HexHoG Descriptors.

Related Ontology Subjects/Areas/Topics: Computer Vision, Visualization and Computer Graphics ; Features Extraction ; Image and Video Analysis ; Segmentation and Grouping ; Shape Representation and Matching

Abstract: The ability to detect and localize an object of interest from a captured image containing a cluttered background is an essential function for an autonomous robot operating in an unconstrained environment. In this paper, we present a novel approach to refining the pose estimate of an object and directly labelling its contours by dense local feature matching. We perform this task using a new image descriptor we have developed called the HexHoG. Our key novel contribution is the formulation of HexHoG descriptors comprising hierarchical groupings of rotationally invariant (S)HoG fields, sampled on a hexagonal grid. These HexHoG groups are centred on detected edges and therefore sample the image relatively densely. This formulation allows arbitrary levels of rotation-invariant HexHoG grouped descriptors to be implemented efficiently by recursion. We present the results of an evaluation based on the ALOI image dataset which demonstrates that our proposed approach can significantly improve a n initial pose estimation based on image matching using standard SIFT descriptors. In addition, this investigation presents promising contour labelling results based on processing 2892 images derived from the 1000 image ALOI dataset. (More)

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Paper citation in several formats:
Liu, Y. and Siebert, P. (2014). Contour Localization based on Matching Dense HexHoG Descriptors.In Proceedings of the 9th International Conference on Computer Vision Theory and Applications - Volume 2: VISAPP, (VISIGRAPP 2014) ISBN 978-989-758-003-1, pages 656-666. DOI: 10.5220/0004744006560666

@conference{visapp14,
author={Yuan Liu. and Paul Siebert.},
title={Contour Localization based on Matching Dense HexHoG Descriptors},
booktitle={Proceedings of the 9th International Conference on Computer Vision Theory and Applications - Volume 2: VISAPP, (VISIGRAPP 2014)},
year={2014},
pages={656-666},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004744006560666},
isbn={978-989-758-003-1},
}

TY - CONF

JO - Proceedings of the 9th International Conference on Computer Vision Theory and Applications - Volume 2: VISAPP, (VISIGRAPP 2014)
TI - Contour Localization based on Matching Dense HexHoG Descriptors
SN - 978-989-758-003-1
AU - Liu, Y.
AU - Siebert, P.
PY - 2014
SP - 656
EP - 666
DO - 10.5220/0004744006560666

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