Characteristic of interference color in rock forming mineral images

Characteristic of interference color in rock forming mineral image has been studied for the mineral identification. The interference color data are obtained from thin section images under polarizing microscope through video camera and a frame grabber card. The data have been collected for the isotropic (garnet), anisotropic non pleochroic (quartz), and anistropic pleochroic (biotite) minerals. The method of analysis is started with the study of the interference color theory. The correlation of theory and observation data in RGB and HIS color model using digital technique has been explained. The isotropic (garnet), anisotropic non pleochroic (quartz), and anistropic pleochroic (biotite) minerals have the specific characteristic either in RGB or HIS color model. The result of this study is a conclusion that characteristic of interference color in rock forming mineral is one of the significant parameters for mineral identification using digital image processing technique.