An optimization of Iineament extraction using TM data

Abstract

Two types of Laplacian Edge enhancement processing were applied on three different surface characters, Rock exposed, Mountainous vegetated, and Flat vegetated, of LANDSAT TM data to clarify several relations between data processing parameters and surface characteristics. As a result, several interesting features were confirmed on the trend of extracted lineaments, (1) Vertical and horizontal Edge enhancement was the best way to exrtact lineaments for every type of areas. Length and the numbers of these extracted lineaments were relatively short and large. (2) Omni-directional Edge enhancement generally gives too much enhancement, and mostly long and less Lineaments were extracted by the reduction of the topographic features.