Object detection in remote sensing imagery using a discriminatively trained mixture model |
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Institution: | 1. Vardhaman College of Engineering, Kacharam, Shamshabad – 501 218, Hyderabad, Telangana, India;2. Institute of Engineering and Technology, Sitapur Road-226021, Lucknow, Uttar Pradesh, India |
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Abstract: | Automatically detecting objects with complex appearance and arbitrary orientations in remote sensing imagery (RSI) is a big challenge. To explore a possible solution to the problem, this paper develops an object detection framework using a discriminatively trained mixture model. It is mainly composed of two stages: model training and object detection. In the model training stage, multi-scale histogram of oriented gradients (HOG) feature pyramids of all training samples are constructed. A mixture of multi-scale deformable part-based models is then trained for each object category by training a latent Support Vector Machine (SVM), where each part-based model is composed of a coarse root filter, a set of higher resolution part filters, and a set of deformation models. In the object detection stage, given a test imagery, its multi-scale HOG feature pyramid is firstly constructed. Then, object detection is performed by computing and thresholding the response of the mixture model. The quantitative comparisons with state-of-the-art approaches on two datasets demonstrate the effectiveness of the developed framework. |
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Keywords: | Object detection Remote sensing imagery Part-based model Mixture model |
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