The generation of high-resolution orthoimages based on TLS data and close-range images – the case study

Abstract

The development of high-resolution geometric documentation plays a fundamental role in the conservation works and managing cultural heritage objects. Nowadays, orthoimages are increasingly being used for these purposes, as it is a combination of geometric accuracy (derived, among other things, from terrestrial laser scanning data and/or photogrammetric methods) and visual quality (based on information from images). The objective of this article is present the methodology of orthoimages generation based on the integration of data acquired by the Z+F 5006h terrestrial laser scanner and the Canon EOS 5D Mark II digital camera. In this investigation, the methodology of high-resolution and high-quality orthoimages was presented. The modified version of the Structure-from-Motion processed the data, and MultiView Stereo approaches based on integrating TLS data with close-range images and extended data analysis. The primary objective of the performed works presented in this paper was to optimise the quality of the high-resolution orthoimages