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Use of the Wavelet Transform for Digital Terrain Model Edge Detection (Special Issue—Wavelet Analysis)

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Document pages: 9 pages

Abstract: The purpose of this work is to analyze thefeasibility of using the wavelet transform in the edge detection of digitalterrain models (DTM) obtained by Laser Scanner. The Haar wavelet transform andthe edge detection method called Wavelet Transform Modulus Maxima (WTMM), bothimplemented in Matlab language, were used. In order to validate and verify theefficiency of WTMM, the edge detection of the same DTM was performed by theRoberts, Sobel-Feldman and Canny methods, chosen due to the wide use in thescientific community in the area of Image Processing and Remote Sensing. Thecomparison of the results showed superior performance of WTMM in terms ofprocessing time.

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