DEVELOPING A MONITORING WORKFLOW FOR THE TEMPLES OF JAVA

Abstract. Indonesia is rich in cultural diversity. Although Islam is the main religion, the most famous sites in Indonesia are the ancient temples (Candis) on Java and Bali. The Candis in Java represent a challenging ancient architectural heritage and are important features for the Javanese population to identify with their own culture, even today as the Buddhist and Hindu religions have almost disappeared from everyday life. The temples of Borobudur and Prambanan are on the UNESCO World Heritage List and are among Indonesia's most popular tourist destinations. In addition, there are numerous smaller temples and temple complexes for whose preservation is challenged by recurring earthquakes. Continuous monitoring of the monuments, especially with regard to structural stability, is therefore essential. In cooperation of the TU Wien with the Universitas Gadjah Mada, Yogyakarta and local authorities, a possible workflow for a future surveying and continuous monitoring of the monuments was tested. With the help of 3D laser scanning and photogrammetry the most reliable and economical method for the continuous observation of the temples shall be developed taking into account the local conditions. In a cooperation of lecturers of the participating universities and students, as well as experts of the responsible temple authority ten temples were measured in order to test the envisaged workflows and their reliability This paper shows the approach and exemplary results.