2017 Volume 16 Issue 2 Pages 99-105
This study aims to examine the method to extract road network which is an important key for interpreting large scale forest exploitation from satellite data. Study site was selected in the forested area which extends over Kompong Thom and Preah Vihear provinces, Cambodia. Landsat-8 OLI data was used in this study. Edge preservation smoothing filter were apply to NDVI image. Road networks which ran east-west and north-south direction in large scale forest exploitation area were extracted by edge detection and filtering procedures. Road networks in young rubber forest were extracted in large scale forest exploitation area. However, the road networks in bare soil which is immediately after exploitation and in mature rubber forest were not detected by this procedure. The extracted road networks by this study would be used for automatic forest change detection procedure combined with other spectral information such as NDVI difference in further study.