Abstract
Lineaments observed from LANDSAT imagery have much more geological significance when they are longer and more straight. The line pair method was proposed in this paper in order to extract such longer lineaments. In this method, local statistics calculated from pixels on the orthogonal line pair centered on each pixel are used. From several experiments, the line pair method was found to be able to estimate considerably large areas with relatively small amounts of computations.
This method was applied to a geological interpretation of a LANDSAT image of the middle part of Korea. In this experiments, it was found that the length and the rotation angle of the orthogonal line pair have much influence on the result. In order to get the best result, a method of choosing the proper line length and the rotation angle was investigated.
As a result, this method was proved to be very useful for the recognition of structural elements such as faults and other geological boundaries, etc.
