TITLE:
Use of the Wavelet Transform for Digital Terrain Model Edge Detection (Special Issue—Wavelet Analysis)
AUTHORS:
Clovis Gaboardi
KEYWORDS:
Digital Terrain Model, Edge Detection, Wavelets Transform, Canny, Roberts, Sobel, Sobel-Feldman
JOURNAL NAME:
Journal of Applied Mathematics and Physics,
Vol.6 No.10,
October
24,
2018
ABSTRACT: The purpose of this work is to analyze the
feasibility of using the wavelet transform in the edge detection of digital
terrain models (DTM) obtained by Laser Scanner. The Haar wavelet transform and
the edge detection method called Wavelet Transform Modulus Maxima (WTMM), both
implemented in Matlab language, were used. In order to validate and verify the
efficiency of WTMM, the edge detection of the same DTM was performed by the
Roberts, Sobel-Feldman and Canny methods, chosen due to the wide use in the
scientific community in the area of Image Processing and Remote Sensing. The
comparison of the results showed superior performance of WTMM in terms of
processing time.