The present paper illustrates the documentation activities developed since 2013 on Upper Kama territories, preliminary to an extensive and joint research action within the European project "PROMETHEUS" (2019-2021), which aims to produce digitized databases and models for the management of the main religious monuments present on this Russian area, nowadays endangered by risk of conservation. The project is funded by the EU program Horizon 2020 -R&I -RISE -Research & Innovation Staff Exchange Marie Skłodowska-Curie, and it is aimed at the definition of inter-sectoral collaboration protocols for the development and promotion of a new methodology for the development of reliable 3D databases and models of monumental complexes in Upper Kama region. The project, that involves the collaboration between three

<p><strong>Abstract.</strong> The present paper illustrates a part of the methodological process of image-based acquisition developed for the documentation of the historical city center of Bethlehem, in the Middle East territory. The first mission of research activities, developed inside the international cooperation project “Management and control of urban growth for the development of heritage and improvement of life in the city of Bethlehem” (2018–2021), coordinated by University of Pavia in collaboration with the Municipality of Pavia and financed with the contribution of AICS (Italian Agency for Cooperation and Development), has been carried on through combined application of digital instruments, TLS and UAV, with the aim of developing “smart”, low-cost and rapid execution procedures for the production of a reliable three-dimensional model of the historic city center. The paper shows the application of different photogrammetric survey campaigns in a portion of the historical town, acquisition problems and tests of morphometrical reliability of each output, in order to develop a general SfM database consisting of different definition levels of the photogrammetric models of historical city center.</p>

With the advent of digital technology, communication has undergone radical transformation processes. The large amount of information that surrounds us with sociological, cultural and economic aspects, have changed the relationship between the perceiver and the context. The perceiver takes part of space, surrounding it, finding new ways to understand it and new archive systems of the information he may acquire.Through digital survey and the use of skilled software, the elements and the relationships of the contemporaneity become networked and accessible to the public. The database in which all the data acquired is collected, permits an extraction of useful information for the orientation in space. This possibility allows the understanding of the relationship between elements and an ever-growing conscious approach to the project. Through digitization, the virtual environment can be preserved. This paper describes an innovative methodology that links the complexity of the databases (for the management of urban and architectural systems) with representation systems and three-dimensional space archives. Some experimental researches conducted explain ways in which one can create virtual databases. These instruments can become narrative path systems where the user can find and interface with the elements of space, in a more conscious, critical and structured approach.

Abstract. This paper describes a sequence of actions developed to guarantee a reliable and suitable dataset for the creation of detailed ortho images of Nativity Church mosaics. During acquisition campaigns, different photogrammetric techniques were tested, and different survey instruments were compared to improve the quality of the data obtained. The different outputs allow the adjustment of the instrument parameters and the acquisition methods, to structure a methodological process aimed at obtaining an accurate level of detail to describe the individual mosaic tile.From the realization of a reliable photomosaics an automatic vectorization system has been developed. This process, aimed at digitizing the tiles of the Church walls and the pavement mosaics, responds to a documentation and management purpose and to an objective of structuring a data acquisition method and post-production that can be replicated on other mosaic contexts.

The walls of Cartagena de Indias through methodological experimentation and survey systems protocols. Digital tools comparison for the study of the Antonelli’s defense systemCartagena de Indias, one of the main Spanish commercial ports in the Caribbean Sea, was strategically built on a system of islands and peninsulas that formed a lacustrine system along the coast of Tierra Firme, known today as Colombia. For several centuries, Cartagena fortifications have been at the fore-front of Spanish military technologies. This site became the scene of action of the main military engineers at the service of the Spanish crown. In 1586 Battista Antonelli received from King Philipe II the task to design this monumental defensive system. The first project for the Cartagena wall enclosure (1595) is due to Battista and it was continued and modified by his nephew Cristoforo Roda. Nowadays, Antonelli walls still fit into the urban fabric of the city and delineate the perimeter of the historic city. The research project follows the previous research experiments conducted by the Lab DAda-LAB of the University of Pavia in the territory of Panama for the study of the Antonelli fortifications systems of Portobello and San Lorenzo del Chagres. It concerned an extensive action aimed at the documentation and to the study of the entire fortified system of the historic center of Cartagena. The perimeter walls of the old city and the fort of San Felipe de Barajas have been documented through the use of a mobile laser scanner that uses SLAM technology, evaluating the most effective performed strategies for fast survey activities. In parallel, a more specific action was conducted on the portion of the Baluarte of Santa Catalina walls, where it was possible to give a comparison between different methods and instruments, in order to verify the reliability of the 3D databases. Analysis protocols have been developed for the documentation and study of the defensive system. The paper will highlight the construction technologies that qualify the fortresses of Cartagena de Indias and the results obtained by the comparison between different data acquisition technologies to evaluate the quality of the models for the development of documentation strategies for heritage enhancement and protection.