10On-Board Flood Change Detection Using SAR Images
10.1INTRODUCTION
A change detection refers to the use of images from the same region acquired by multiple phases to determine and analyze changes. Since synthesis aperture sensors (SAR) are able to acquire data in all weather conditions, SAR image-based change detection has become a magnet in remote sensing research and is widely used in the field of natural disaster monitoring and evaluation. The existing change detection methods can be divided into three categories, pixel-based change detection (PBCD), object-based change detection (OBCD) and the hybrid change detection (HCD). The PBCD method is simple, fast and effective, but it is susceptible to noise (
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