Abstract
Methods of pattern recognition by digital processing are applied to analyze edges, lines, density of lines and standard deviations of the LANDSAT Thematic Mapher image in Mt. Takakuma area of South Kyushu, Japan. Mt. Takakuma area is composed of the sediments of Cretaceous to Quaternary in about 20 kin times 24 km square area and centrally intruded by the Takakumayama Granite of Miocene age. Peripheral area of the Granite includes the auriferous tungsten deposits which are mined out. Edges and lines extracted in image mostly coincide to the geological structures of faults, joints, cracks, sedimentary bedding strikes, and so on firstly because the frequency of the direction of lines are concordant to the general tendency of the studied geological structures, secondly because the lines and edges are more or less similar in result, and thirdly because some of the long continuing edges and lines are concordant to the major faults. Areal features represented by the textural standard deviations and densities of lines coincide to the geological zones of formations. The areal features by the computer pattern recognition is useful for the geological analysis. Combined image of lines, density of lines, and standard deviations are newly proposed for the advanced structural analysis.
