Abstract
Abstract. The digital documentation of architectural heritage is important for monitoring, preserving, managing as well as 3B BIM modelling, time-space VR (virtual reality) applications. The unmanned aerial vehicles (UAVs) have been widely used in these application thanks to rapid developments in technology which enable the high resolution images with resolutions in millimeters. Moreover, it has become possible to produce highly accurate 3D point clouds with structure from motion (SfM) and multi-view stereo (MVS), to obtain a surface reconstruction of a realistic 3D architectural heritage model by using high-overlap images and 3D modeling software such as Context capture, Pix4Dmapper, Photoscan. In this study, digital documentation of Otag-i Humayun (The Ottoman Empire Sultan's Summer Palace) located in Davutpaşa, Istanbul/Turkey is aimed using low cost UAV. The data collections have been made with low cost UAS 3DR Solo UAV with GoPro Hero 4 with fisheye lens. The data processing was accomplished by using commercial Pix4D software. The dense point clouds, a true orthophoto and 3D solid model of the Otag-i Humayun were produced results. The quality check of the produced point clouds has been performed. The obtained result from Otag-i Humayun in Istanbul proved that, the low cost UAV with fisheye lens can be successfully used for architectural heritage documentation.
Highlights
The preservation of the cultural heritage is one of the main issues for all countries
The main aim of this study is to evaluate the performance of the low cost light Unmanned Aerial Vehicles (UAVs) system with fisheye lens for architectural documentation
The performance of the low cost 3DR Solo rotarywing quadcopter UAV equipped with GoPro Hero 4 action camera fisheye lens mounted on 3-axis stabilized gimbals, Solo smart controller was tested for digital documentation of Otag-i Humayun as an architectural heritage located in Davutpaşa, Istanbul as study area
Summary
The preservation of the cultural heritage is one of the main issues for all countries. Documentation and inventory of the cultural heritage in Turkey needs to be completed as soon as possible for the efficient conservation interventions. The digital photogrammetry has been used successfully for documentation of the cultural heritage. The terrestrial laser scanning system is another tool for architectural heritage documentation as well as 3D modelling and visualization (Yastikli, 2007). UAV systems are frequently used in photogrammetry application because of the possibility of capturing cost effective data at high spatial and temporal resolution. The light UAV platform with amateur or SRL digital cameras and GNSS/INS systems, can be used for photogrammetric data acquisition. The low cost UAV systems can be used as a tool for architectural documentation instead of the terrestrial laser scanning system
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