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Spectral–spatial feature combination for hyperspectral image analysis has become an important research topic in hyperspectral remote sensing applications. A simple and straightforward way to integrate spectral–spatial features is to concatenate heterogeneous features into a long vector. Then, the dimensionality reduction techniques, i.e., feature selection, are applied before subsequent utilizations...
This paper presents a novel approach for classifying arm gestures by building a three-layer semantic classification tree. We first extract three semantic features that explicitly contain communicative information and have outstanding descriptive ability. Based on the analysis of human body parts and the spatial-temporal characteristic of gestures, collaboration between two arms, key posture, as well...
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