Mountain Areas Extraction by Introduction of Wavelet Transform and Its Application to Ridge Lines Detection

Search this article

Description

Ridge lines are useful geometric feature for image analysis, in which mountain ridge lines are important in obtaining Digital Elevation Models (DEMs). This paper presents a wavelet-based method to detect mountain ridge lines for synthetic aperture radar (SAR) images. First, ridge lines of mountains as high frequency signals are emphasized by wavelet transform; then average variance judgement and histogram analysis, which are supplement of wavelet transform, are used to extract temporal mountain areas (MA) and final MA respectively; finally, Laplacian of Gaussian (LoG) filter is used to detect ridge lines in the final MA. The method is illustrated by 550×550 ERS-1/SAR data and satisfactory results are presented.

Journal

References(4)*help

See more

Details 詳細情報について

Report a problem

Back to top