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Terrain Classification From Body-Mounted Cameras During Human Locomotion

Author:
Anantrasirichai, Nantheera   Burn, Jeremy   Bull, David  


Journal:
IEEE Transactions on Cybernetics


Issue Date:
2015


Abstract(summary):

This paper presents a novel algorithm for terrain type classification based on monocular video captured from the viewpoint of human locomotion. A texture-based algorithm is developed to classify the path ahead into multiple groups that can be used to support terrain classification. Gait is taken into account in two ways. Firstly, for key frame selection, when regions with homogeneous texture characteristics are updated, the frequency variations of the textured surface are analyzed and used to adaptively define filter coefficients. Secondly, it is incorporated in the parameter estimation process where probabilities of path consistency are employed to improve terrain-type estimation. When tested with multiple classes that directly affect mobility-a hard surface, a soft surface, and an unwalkable area-our proposed method outperforms existing methods by up to 16%, and also provides improved robustness.



Page:
2249-2260


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