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A new multiscale edge detection technique [for synthetic aperture radar images]

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4 Author(s)
Han Chunming ; Inst. of Remote Sensing Applications, Acad. Sinica, Beijing, China ; Guo Huadong ; Wang Changlin ; Tan Qulin

An effective algorithm using the multiscale technique for detecting edges in synthetic aperture radar (SAR) images is presented utilizing the empirical mode decomposition (EMD). Since EMD is a one-dimensional data processing method, EMD is employed to image in two directions: horizontally (0°) and vertically (90°) to obtain two directionally smoothed images at different scales. In this way, different scales of image data were obtained. In order to obtain edge points of single pixel width, the grad of different image scales is computed. The edge map is extracted from different image scales based on a uniform space condition. Application of this method to SAR images has shown that the effectiveness of the method is quite satisfactory.

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Geoscience and Remote Sensing Symposium, 2002. IGARSS '02. 2002 IEEE International  (Volume:6 )

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