Discriminative Kernel Feature Extraction and Learning for Object Recognition and Detection

Hong Pan, Søren Olsen, Yaping Zhu

2015

Abstract

Feature extraction and learning is critical for object recognition and detection. By embedding context cue of image attributes into the kernel descriptors, we propose a set of novel kernel descriptors called context kernel descriptors (CKD). The motivation of CKD is to use the spatial consistency of image attributes or features defined within a neighboring region to improve the robustness of descriptor matching in kernel space. For feature learning, we develop a novel codebook learning method, based on the Cauchy-Schwarz Quadratic Mutual Information (CSQMI) measure, to learn a compact and discriminative CKD codebook from a rich and redundant CKD dictionary. Projecting the original full-dimensional CKD onto the codebook, we reduce the dimensionality of CKD without losing its discriminability. CSQMI derived from Rényi quadratic entropy can be efficiently estimated using a Parzen window estimator even in high-dimensional space. In addition, the latent connection between Rényi quadratic entropy and the mapping data in kernel feature space further facilitates us to capture the geometric structure as well as the information about the underlying labels of the CKD using CSQMI. Thus the resulting codebook and reduced CKD are discriminative. We report superior performance of our algorithm for object recognition on benchmark datasets like Caltech-101 and CIFAR-10, as well as for detection on a challenging chicken feet dataset.

Paper Citation

in Harvard Style

Pan H., Olsen S. and Zhu Y. (2015). Discriminative Kernel Feature Extraction and Learning for Object Recognition and Detection . In Proceedings of the International Conference on Pattern Recognition Applications and Methods - Volume 1: ICPRAM, ISBN 978-989-758-076-5, pages 99-109. DOI: 10.5220/0005212900990109

in Bibtex Style

@conference{icpram15,
author={Hong Pan and Søren Olsen and Yaping Zhu},
title={Discriminative Kernel Feature Extraction and Learning for Object Recognition and Detection},
booktitle={Proceedings of the International Conference on Pattern Recognition Applications and Methods - Volume 1: ICPRAM,},
year={2015},
pages={99-109},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0005212900990109},
isbn={978-989-758-076-5},
}

in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Pattern Recognition Applications and Methods - Volume 1: ICPRAM,
TI - Discriminative Kernel Feature Extraction and Learning for Object Recognition and Detection
SN - 978-989-758-076-5
AU - Pan H.
AU - Olsen S.
AU - Zhu Y.
PY - 2015
SP - 99
EP - 109
DO - 10.5220/0005212900990109