Building extraction Composition of minerals Contour analysis Degree of weatherings Diffuse reflectivity Digital surface models Durability Engineering properties Error assessment Extraction Forestry Historic preservation Kuala Lumpur [West Malaysia] Malaysia Multiple loading Nanostructured materials Object extraction Object segmentation Optical radar Physical and mechanical properties Quartz Radar Rocks Slake durability indices Swelling potential Vertical accuracy Weathering Weathering grades West Malaysia accuracy assessment