Title
Local N-ary Patterns: a local multi-modal descriptor for place categorization.
Abstract
This paper presents an effective integration method of multiple modalities such as depth, color, and reflectance for place categorization. To achieve better performance with integrated multi-modalities, we introduce a novel descriptor, local N-ary patterns (LTP), which can perform robust discrimination of place categorization. In this paper, the LNP descriptor is applied to a combination of two modalities, i.e. depth and reflectance, provided by a laser range finder. However, the LNP descriptor can be easily extended to a larger number of modalities. The proposed LNP describes relationships between the multi-modal values of pixels and their neighboring pixels. Since we consider the multi-modal relationship, our proposed method clearly demonstrates more effective classification results than using individual modalities. We carried out experiments with the Kyushu University Indoor Semantic Place Dataset, which is publicly available. This data-set is composed of five indoor categories: corridors, kitchens, laboratories, study rooms, and offices. We confirmed that our proposed method outperforms previous uni-modal descriptors.
Year
DOI
Venue
2016
10.1080/01691864.2015.1120242
ADVANCED ROBOTICS
Keywords
Field
DocType
place categorization,reflectance image,depth image,Local N-ary patterns,laser range finder
Modalities,Computer vision,Categorization,Multiple modalities,Pixel,Artificial intelligence,Engineering,Reflectivity,Modal
Journal
Volume
Issue
ISSN
30.0
6
0169-1864
Citations 
PageRank 
References 
1
0.36
21
Authors
4
Name
Order
Citations
PageRank
Hojung Jung182.51
Óscar Martínez Mozos242925.82
Yumi Iwashita321223.59
Ryo Kurazume462274.18