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19 September 2016 Research of building information extraction and evaluation based on high-resolution remote-sensing imagery
Qiong Cao, Lingjia Gu, Ruizhi Ren, Lang Wang
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Proceedings Volume 9976, Imaging Spectrometry XXI; 99760Y (2016) https://doi.org/10.1117/12.2235376
Event: SPIE Optical Engineering + Applications, 2016, San Diego, California, United States
Abstract
Building extraction currently is important in the application of high-resolution remote sensing imagery. At present, quite a few algorithms are available for detecting building information, however, most of them still have some obvious disadvantages, such as the ignorance of spectral information, the contradiction between extraction rate and extraction accuracy. The purpose of this research is to develop an effective method to detect building information for Chinese GF-1 data. Firstly, the image preprocessing technique is used to normalize the image and image enhancement is used to highlight the useful information in the image. Secondly, multi-spectral information is analyzed. Subsequently, an improved morphological building index (IMBI) based on remote sensing imagery is proposed to get the candidate building objects. Furthermore, in order to refine building objects and further remove false objects, the post-processing (e.g., the shape features, the vegetation index and the water index) is employed. To validate the effectiveness of the proposed algorithm, the omission errors (OE), commission errors (CE), the overall accuracy (OA) and Kappa are used at final. The proposed method can not only effectively use spectral information and other basic features, but also avoid extracting excessive interference details from high-resolution remote sensing images. Compared to the original MBI algorithm, the proposed method reduces the OE by 33.14% .At the same time, the Kappa increase by 16.09%. In experiments, IMBI achieved satisfactory results and outperformed other algorithms in terms of both accuracies and visual inspection
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Qiong Cao, Lingjia Gu, Ruizhi Ren, and Lang Wang "Research of building information extraction and evaluation based on high-resolution remote-sensing imagery", Proc. SPIE 9976, Imaging Spectrometry XXI, 99760Y (19 September 2016); https://doi.org/10.1117/12.2235376
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KEYWORDS
Remote sensing
Image enhancement
Image segmentation
Satellites
Image quality
Detection and tracking algorithms
Image resolution
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