Abstract
An image processing method for resolution enhancement of remotely sensed satellite images, which is a useful means of watershed monitoring, was proposed in this study. The enhancement of the spectral information of each pixel was attempted here, although conventional methods can only provide intensity information. The proposed method can enhance the spatial resolution of multispectral image data using panchromatic image data that has higher resolution in the same targeted area, incorporating the category expansion procedure to estimate the spectral characteristics of the pixels. A case study of the Lake Kasumigaura Area with SPOT HRV (High Resolution Visible) image demonstrated that the resolutions of multispectral images can be enhanced from 20m to 10m with 95% accuracy.
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