کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6949790 | 1451292 | 2013 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Glacier surface velocity estimation using repeat TerraSAR-X images: Wavelet- vs. correlation-based image matching
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
سیستم های اطلاعاتی
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![عکس صفحه اول مقاله: Glacier surface velocity estimation using repeat TerraSAR-X images: Wavelet- vs. correlation-based image matching Glacier surface velocity estimation using repeat TerraSAR-X images: Wavelet- vs. correlation-based image matching](/preview/png/6949790.png)
چکیده انگلیسی
GSV estimation was performed using two methods, the comparison of which was a major goal of this study: traditional cross-correlation optimisation and a dense image matching algorithm based on complex wavelet decomposition. Each method was found to have unique advantages and disadvantages, but it was concluded that for GSV monitoring, cross-correlation is probably preferable to the wavelet-based approach. While it generates fewer estimates per unit area, this is not necessarily a critical requirement for all glaciological applications, and the method requires less initial “tuning” (calibration) than the wavelet algorithm, making it a slightly better tool in operational contexts. Also, the use of the highest-resolution spotlight datasets is recommended over stripmap mode images when large-area coverage is less critical. The comparative lack of visible features at the resolution of the stripmap images made reliable GSV estimation difficult, with the exception of several small areas dominated by large crevasses.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: ISPRS Journal of Photogrammetry and Remote Sensing - Volume 82, August 2013, Pages 49-62
Journal: ISPRS Journal of Photogrammetry and Remote Sensing - Volume 82, August 2013, Pages 49-62
نویسندگان
Adrian Schubert, Annina Faes, Andreas Kääb, Erich Meier,