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Remote Sens. 2017, 9(10), 1030; doi:10.3390/rs9101030

Scene Semantic Understanding Based on the Spatial Context Relations of Multiple Objects

1,2,* , 1,2,* and 3
1
State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China
2
Collaborative Innovation Center of Geospatial Technology, Wuhan University, Wuhan 430079, China
3
Department of Geography & Resource Management, The Chinese University of Hong Kong, Hong Kong, China
*
Authors to whom correspondence should be addressed.
Received: 18 August 2017 / Revised: 17 September 2017 / Accepted: 28 September 2017 / Published: 9 October 2017
(This article belongs to the Section Remote Sensing Image Processing)
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Abstract

As a result of the large semantic gap between the low-level features and the high-level semantics, scene understanding is a challenging task for high satellite resolution images. To achieve scene understanding, we need to know the contents of the scene. However, most of the existing scene classification methods, such as the bag-of-visual-words model (BoVW), feature coding, topic models, and neural networks, can only classify the scene while ignoring the components and the semantic and spatial relations between these components. Therefore, in this paper, a bottom-up scene understanding framework based on the multi-object spatial context relationship model (MOSCRF) is proposed to combine the co-occurrence relations and position relations at the object level. In MOSCRF, the co-occurrence relation features are modeled by the fisher kernel coding of objects (oFK), while the position relation features are represented by the multi-object force histogram (MOFH). The MOFH is the evolution of the force histogram between pairwise objects. The MOFH not only has the property of being invariant to rotation and mirroring, but also acquires the spatial distribution of the scene by calculating the acting force between multiple land-cover objects. Due to the utilization of the prior knowledge of the objects’ information, MOSCRF can explain the objects and their relations to allow understanding of the scene. The experiments confirm that the proposed MOSCRF can reflect the layout mode of the scene both semantically and spatially, with a higher precision than the traditional methods. View Full-Text
Keywords: scene understanding; object-oriented classification; co-occurrence relations; position relations; multi-object force histogram scene understanding; object-oriented classification; co-occurrence relations; position relations; multi-object force histogram
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Zhong, Y.; Wu, S.; Zhao, B. Scene Semantic Understanding Based on the Spatial Context Relations of Multiple Objects. Remote Sens. 2017, 9, 1030.

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