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Object Detection in High-Resolution Remote Sensing Images Using Rotation Invariant Parts Based Model

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5 Author(s)
Wanceng Zhang ; Key Lab. of Technol. in Geo-spatial Inf. Process. & Applic. Syst., Beijing, China ; Xian Sun ; Kun Fu ; Chenyuan Wang
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In this letter, we propose a rotation invariant parts-based model to detect objects with complex shape in high-resolution remote sensing images. Specifically, the geospatial objects with complex shape are firstly divided into several main parts, and the structure information among parts is described and regulated in polar coordinates to achieve the rotation invariance on configuration. Meanwhile, the pose variance of each part relative to the object is also defined in our model. In encoding the features of the rotated parts and objects, a new rotation invariant feature is proposed by extending histogram oriented gradients. During the final detection step, a clustering method is introduced to locate the parts in objects, and that method can also be used to fuse the detection results. By this way, an efficient detection model is constructed and the experimental results demonstrate the robustness and precision of our proposed detection model.

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Geoscience and Remote Sensing Letters, IEEE  (Volume:11 ,  Issue: 1 )