• Corpus ID: 32088003

SAR Image Enhancement : Combining Image Filtering and Segmentation

@inproceedings{Beaulieu2001SARIE,
  title={SAR Image Enhancement : Combining Image Filtering and Segmentation},
  author={Jean-Marie Beaulieu},
  year={2001}
}

• Jean-Marie Beaulieu
• Published 2001
• Environmental Science

SAR images are generally affected by speckle noise due to the interference of reflected waves from many elementary scatterers. The speckle complicates image interpretation and reduces the effectiveness of automatic image analysis techniques. A good filter should maintain the signal mean value and reduce the speckle while preserving the edges. Adaptive filters use an estimation of the variation coefficient. The utilization of fixed size windows produces poor estimates. We examine new ways to use image segmentation techniques to improve image filtering processes. In a complex task, the objectives of the first step should be limited in order to obtain reliable results that will be the base of next steps. We use a region growing process to reduce extremum values as a pre-processing step to SAR image filtering.