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

作　　者：Clovis Gaboardi 

机构地区：[1]Military Engineers Corps of Brazilian Army (retired), Independent Researcher, Sã o José dos Campos, SP, Brazil

出　　处：《Journal of Applied Mathematics and Physics》2018年第10期1997-2005,共9页应用数学与应用物理（英文）

摘　　要：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.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.

关 键 词：Digital TERRAIN Model Edge Detection WAVELETS TRANSFORM CANNY Roberts SOBEL Sobel-Feldman 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]