RELIABILITY ANALYSIS OF SEGMENTATION METHOD TO IDENTIFY THE EXISTENCE OF RAILWAY LINES (CASE STUDY: RAILWAY LINES AT YOGYAKARTA INTERNATIONAL AIRPORT) Monica Maharani (a*), Riyas Syamsul Arif (b), Ahmad Rafi Muafa Syarif (a)
a) Teknik Geomatika, Universitas Pembangunan Nasional Veteran Yogyakarta
*monica.maharani[at]upnyk.ac.id
b) Teknik Geomatika, Universitas Gadjah Mada
Abstract
Segmentation method has shown a good level of success for detecting specific types of objects on the earths surface, but there has been no research examining the use of segmentation for detecting railway tracks. The purpose of this study is to test the reliability of the segmentation method in detecting specific objects in the form of railway track components using orthomosaic image data from aerial photography data acquisition with drones. The location chosen for the research was the construction of a new rail line from Kedundang station to Yogyakarta International Airport. This research using aerial photography equipped with GCP measurements using the RTK NTRIP GNSS receiver to obtain accurate coordinates. The results of the study showed that the segmentation method used couldnt detect railway track components perfectly. The components that couldnt be detected were railway track fasteners. However, the concrete and steel railway sleeper components could be detected well.
