제목 | A Study on Urban Change Detection Using D-DSM from Stereo Satellite Data | ||
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국/내외 | 국내 | 작성일 | 2019-12-05 |
Unlike aerial images covering small region, satellite data show high potential to detect urban scale geospatial changes. The change detection using satellite images can be carried out using single image or stereo images. The single image approach is based on radiometric differences between two images of different times. It has limitations to detect building level changes when the significant occlusion and relief displacement appear in the images. In contrast, stereo satellite data can be used to generate DSM (Digital Surface Model) that contain information of relief-corrected objects. Therefore, they have high potential for the object change detection. Therefore, we carried out a study for the change detection over an urban area using stereo satellite data of two different times. First, the RPC correction was performed for two DSMs generation via stereo image matching. Then, D-DSM (Differential DSM) was generated by differentiating two DSMs. The D-DSM was used for the topographic change detection and the performance was checked by applying different height thresholds to D-DSM. |
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출처 | 한국측량학회지 |
이전글 | 저해상도 지형 자료를 활용한 KOMPSAT-3A 스테레오 영상 기반의 DTM 생성 방법 |
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다음글 | Local-Based Iterative Histogram Matching for Relative Radiometric Normalization |
2023-11-14
2023-09-18
2023-09-14
지리
2024-04-24
토양
2024-04-19
토양
2024-04-19
2019-07-25
2019-02-07
카테고리 | 재난재해 |
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위성정보 | KOMPSAT-3 |
생성일 | 2015-03-24 |
ProductID | K3_20150505073608_15817_06161210 |
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국가(영문) | Nepal |
국가 | 네팔 |
지역 | Pokhara |
레벨 | 1R |