Name
Title | ||
|---|---|---|
Analysis of salt-damaged paddy field using SPOT5 satellite images in Yamagata Prefecture |
Abstract | ||
|---|---|---|
In this paper we propose a new method for estimating the degree of salt-damage over a widespread area using SPOT5 satellite images. In the method, the paddy field pixel data are normalized and plotted in the spectral feature space of NDVI (Normalized Differential Vegetation Index) and NDGI (Normalized Differential Green Index). In the feature space, normal paddies clustered along a standard line, whereas the damaged paddies, at an early stage, shifts at the under side of the standard line. Thus the degree of early-stage damage can be detected from the difference from the standard line. The resultant degree of damages are shown in color and plotted on the map. In order to comparatively evaluate our method, we also examined other methods using reflectance of NIR or NDVI. In the comparison, we confirmed that the newly proposed method showed the best match to the ground truth observation. Subsequently, we attempted to apply the method to the images taken after "Tsunami" in Sumatera for testing the availability. |
Year | DOI | Venue |
|---|---|---|
2005 | 10.1109/IGARSS.2005.1526362 | Geoscience and Remote Sensing Symposium, 2005. IGARSS '05. Proceedings. 2005 IEEE International |
Keywords | Field | DocType |
typhoons,paddy field,image analysis,testing,satellites,reflectivity,agricultural engineering,pixel | Feature vector,Satellite,Normalization (statistics),Paddy field,Computer science,Remote sensing,Ground truth,Normalized Difference Vegetation Index,Pixel,Reflectivity | Conference |
Volume | ISBN | Citations |
3 | 0-7803-9050-4 | 1 |
PageRank | References | Authors |
4.48 | 1 | 4 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Hoshino, S. | 1 | 1 | 4.48 |
| Naoko Kosaka | 2 | 16 | 11.70 |
| Uto, Kuniaki | 3 | 18 | 11.93 |
| Minekawa, Y. | 4 | 5 | 9.37 |