In the following paper, an application of Unmanned Aerial Vehicle (UAV) for agricultural purposes will be presented. The field of interest to be monitored is situated in the Western part of the Czech Republic. It is located in the area of the Vysoké Sedliště village, close to the city of Planá. There are two main crops cultivated in the areacorn and barley. The surrounding territory is mostly covered with grass. The research team carried out numerous unmanned flights with a fixed-wing platform with two different sensorsmultispectral and thermal. Three vegetation indices were computed. Moreover, two thermal maps are presented to indicate the relation between vegetation and soil temperature.

The following paper aims to test and evaluate the accuracy of UAV data for volumetric measurements to the conventional GNSS techniques. For this purpose, an appropriate open pit quarry has been chosen. Two sets of measurements were performed. Firstly, a stockpile was measured by GNSS technologies and later other terrestrial GNSS measurements for modelling the berms of the quarry were taken. Secondly, the area of the whole quarry including the stockpile site was mapped by a UAV flight. Having considered how dynamic our world is, new techniques and methods should be presented in numerous fields. For instance, the management of an open pit quarry requires gaining, processing and storing a large amount of information which is constantly changing with time. Fast and precise acquisition of measurements regarding the process taking place in a quarry is the key to an effective and stable maintenance. In other words, this means getting an objective evaluations of the processes, using up-to-date technologies and reliable accuracy of the results. Often legislations concerning mine engineering state that the volumetric calculations are to present ±3% accuracy of the whole amount. On one hand, extremely precise measurements could be performed by GNSS technologies, however, it could be really time consuming. On the other hand, UAV photogrammetry presents a fast, accurate method for mapping large areas and calculating stockpiles volumes. The study case was performed as a part of a master thesis.

A locality that we studied was an archaeological site located near the village of Ctiněves, in the district of Litoměřice in the Czech Republic. The archaeological site is a polycultural site. It is very significant and plays an important role in the Czech archaeology. During our research, we found that cropmarks that were visible in 2016s were not visible in 2017 at all. This has brought us to study climate conditions and their influence on cropmarks. We studied nine other archaeological sites in the neighborhood of our site. During this research, we were looking for cropmarks and what kind of crop was planted there. We were searching for a correlation between climate conditions and cropmark visibility in this part of the study. Our second part of the study focused on the crop used at the site and whether there was an influence on the cropmarks. We tested grain, corn and rapeseed oil. Grain had the best results for cropmark visibility in our case. Rapeseed oil results suggested that cropmarks are significantly reduced. Our last area of interest dealt with using a thermal imager for archaeological features detection on the site without crops. We made several flights with the thermal imager, some of them before sunrise and some after sunrise. Our results showed several types of features on a football pitch, which is located on part of the archaeological site.

Documentation of a historical building is very important process preceding to every restoration or reconstruction work. It helps to preserve even minor information about objects shape, state, position and is often used for work advancement planning. Documentation is usually done using precise 3D model creation from which demanded cuts like ground plan are created. This papers shows how new geomatics methods can be used for 3D model creation and its placement in the area, that can be very interesting in terms of north-south position. As a case study two historical churches located in Czech Republic (towns of Holubice and Kralovice) has been used. Photogrammetry and laser scanning methods for 3D model creation are introduced.

Commission VI, WG VI/4KEY WORDS: Syria, documentation, Aleppo, Great Omayyad mosque, analogue photos, IBMR ABSTRACT:In 1999, a big project for the documentation of the Great Omayyad mosque in Aleppo / Syria under UNESCO was conducted. By end of the last century, still analogue cameras were still being used, like the UMK Zeiss, RolleiMetric System. Digital cameras and digital automatic data processing were just starting to be on the rise and laser scanning was not relevant. In this situation, photogrammetrical measurement used stereo technology for complicated situations, and object and single-image technology for creating photoplans. Hundreds of photogrammetric images were taken. However, data processing was carried out on digital stereo plotters or workstations; it was necessary that all analogue photos were converted to digital form using a photogrammetric scanner. The outputs were adequate to the end of the last century. Nowadays, after 19 years, the photogrammetric materials still exist, but the technology and processing is completely different. Our original measurement is historical and nowadays quite obsolete. So we was it decided to explore the possibilities of the new processing of historical materials. Why? The reason is that in the last few years there has been civil war in Syria and the above mentioned monument was severely damaged. The existing historical materials therefore provide a unique opportunity for possible future reconstruction. This paper refers to the completion of existing materials, their evaluation and possibilities of new processing with today's technologies.

No abstract

No abstract

Abstract. The aim of this contribution is an analysis of related technologies for data capturing for creating a digital twin of selected construction. As a case project a baroque church was selected. Four technologies were used for object modelling: TLS (terrestrial laser scanning), digital close-range photogrammetry SfM (structure from motion) as a terrestrial and aerial (drone) technology, and PLS (personal mobile laser scanner). It was possible to combine data from drone and terrestrial photogrammetry, the model was compared to TLS and proved to be sufficiently accurate. The data from the PLS were more complex (inside and outside) but did not contain higher parts of the building. However, it suitably complemented the entire interior. The complex model can be made as joined model from all devices and it is suitable for export to virtual reality (VR).