3D Holoscopic Imaging for Cultural Heritage Digitalisation

The growing interest in archaeology has enabled the discovery of an immense number of cultural heritage assets and historical sites. Hence, preservation of CH through digitalisation is becoming a primordial requirement for many countries as a part of national cultural programs. However, CH digitalisation is still posing serious challenges such as cost and time-consumption. In this manuscript, 3D holoscopic (H3D) technology is applied to capture small sized CH assets. The H3D camera utilises micro lens array within a single aperture lens and typical 2D sensor to acquire 3D information. This technology allows 3D autostereoscopic visualisation with full motion parallax if convenient Microlens Array (MLA)is used on the display side. Experimental works have shown easiness and simplicity of H3D acquisition compared to existing technologies. In fact, H3D capture process took an equal time of shooting a standard 2D image. These advantages qualify H3D technology to be cost effective and time-saving technology for cultural heritage 3D digitisation

Implementation of industry 4.0 in the development of the space industry

Treball Final de Grau en Administració d'Empreses. Codi: AE1049. Curs 2022/2023The deployment of Industry 4.0, which is defined by the integration of sophisticated technology and data-driven processes, has transformed several industries, allowing for higher productivity, efficiency, and flexibility. The space industry is one that has been heavily impacted by Industry 4.0. Driven by technical developments and the desire to explore beyond Earth's borders, the space industry has recognized the potential of Industry 4.0 to improve its operations and push the boundaries of space exploration even further. Space exploration is an enthralling and necessary pursuit that feeds human curiosity while pushing the limits of knowledge and technical innovation. It provides a once-in-alifetime opportunity to explore the universe's mysteries, generating awe and amazement in individuals of all ages. Furthermore, there are various scientific discoveries and technological advances that emerge because of space travel. Fascinating statistics underscore its significance: Over 2,700 exoplanets have been confirmed by NASA's Kepler mission alone, opening new frontiers in the search for extra-terrestrial life, while the International Space Station has hosted more than 240 astronauts from 19 countries, fostering international collaboration and expanding our understanding of human adaptation to space

3D Holoscopic Imaging for Cultural Heritage Digitalisation

The growing interest in archaeology has enabled the discovery of an immense number of cultural heritage assets and historical sites. Hence, preservation of CH through digitalisation is becoming a primordial requirement for many countries as a part of national cultural programs. However, CH digitalisation is still posing serious challenges such as cost and time-consumption. In this manuscript, 3D holoscopic (H3D) technology is applied to capture small sized CH assets. The H3D camera utilises micro lens array within a single aperture lens and typical 2D sensor to acquire 3D information. This technology allows 3D autostereoscopic visualisation with full motion parallax if convenient Microlens Array (MLA) is used on the display side. Experimental works have shown easiness and simplicity of H3D acquisition compared to existing technologies. In fact, H3D capture process took an equal time of shooting a standard 2D image. These advantages qualify H3D technology to be cost effective and time-saving technology for cultural heritage 3D digitisation

Análisis modal experimental en campo completo empleando Correlación Digital de Imágenes en alta velocidad/ Full-field experimental modal analysis using High Speed Digital Image Correlation

En esta tesis se explora la técnica HS DIC para su uso en análisis modales experimentales. Esta técnica ofrece mayor densidad espacial de medida de manera no invasiva frente a sensores tradicionales. Primeramente, se propone una metodología para la caracterización modal en ensayos por movimiento de la base. Esta metodología establece una conversión de la respuesta al movimiento de la base en su equivalente respuesta a una fuerza puntual. El método de ajuste del círculo es empleado por ser un eficiente método de identificación modal para medidas de HS DIC. Los modelos teóricos y numéricos validan los resultados de esta metodología para una viga en voladizo. Se explora también la medida en imágenes de movimiento magnificado. Esta metodología es validada en una viga en voladizo y aplicada en un complejo panel de material compuesto. Los resultados muestran notables mejoras en la medida tanto en 2D como en 3D.In this thesis HS DIC is explored to be used in experimental modal analyses. This technique provides higher spatial density and non-invasive measurements over traditional sensors. Firstly, a methodology for modal characterisation in base motion test is proposed. This methodology establish a converstion of the response to base excitation into its equivalent response to pointwise force excitation. The circle-fit method is employed since it is an efficient modal identification method for HS DIC measurements. The theroretical and numerical models validate the methodology results for a cantilever beam. Additionally, it is explored the measurements in magnified motion images. The methodology is validated in a cantiléver beam and applied to a complex composite panel. The results show notable improvements in the measurements both in 2D and 3D.Tesis Univ. Jaén. Departamento de Ingeniería Mecánica y Minera. Leída el 26 de abril de 2018

Colour measurement and documentation in historical buildings: the case study of the Kirna Manor House in Estonia

Historical buildings and their decorative apparatus have a key role in the transmission of national and local traditions, requiring careful conservation of these structures and their overlapping decorative layers, mostly made up of stuccos and coatings. Unfortunately, the procedures and methodologies for both documenting and preserving such cultural heritage are not clearly standardised in Estonia, where most historic manor houses are managed by private owners who have no precise guidelines to follow during the restoration of such complex structures. To amend this issue, the Estonian Academy of Arts (EKA) organised an international workshop on “Colour Measurement and Documentation in Architectural Paint Research” with the aim to bring together several experts, techniques and tools from different countries in order to define, optimise and modernise the methodologies employed for the identification, documentation and preservation of historical painted interiors and colours. In addition to a theoretical session, the workshop held in October 2019 entailed practical work at the Kirna Manor House, analysing the entrance hall of the building. The paper presents the results of the research and the discussion between international experts

Utilization of photogrammetry during establishment of virtual rock collection at Aalto University

In recent years, we can observe increasing popularity of the term industry 4.0 which is defined as a new level of organization and control over the entire value chain of the life cycle of products. Experts distinguished nine different technologies, which are essential for the development of industry 4.0. One of them is virtual reality, which is used during processes of data visualisation and digitization. These processes can also include geological collections. Due to limited access to different geological spots, the popularity of destructive techniques during rock testing and high complexity of the process of learning geosciences, geologists are looking for new methods of digitization of different samples of rocks and minerals. The aim of this master thesis was to create a virtual collection of selected rocks and minerals using photogrammetry and virtual reality (VR) technology and develop new tool and interactive learning platform for study mineralogy and petrography. To accomplish these aims and create 3D models of specimens, the author built professional photo studio and used photogrammetric techniques to digitize the samples. The main output of this research is a virtual 3D collection of rocks and minerals that consisting of 107 samples, and which is available via two different channels: Sketchfab portal online model repository and VR environment built in Unity game engine. The virtual collection will be utilised to teach students how to identify rocks and minerals at Aalto University

Engineering for a changing world: 60th Ilmenau Scientific Colloquium, Technische Universität Ilmenau, September 04-08, 2023 : programme

In 2023, the Ilmenau Scientific Colloquium is once more organised by the Department of Mechanical Engineering. The title of this year’s conference “Engineering for a Changing World” refers to limited natural resources of our planet, to massive changes in cooperation between continents, countries, institutions and people – enabled by the increased implementation of information technology as the probably most dominant driver in many fields. The Colloquium, supplemented by workshops, is characterised but not limited to the following topics: – Precision engineering and measurement technology Nanofabrication – Industry 4.0 and digitalisation in mechanical engineering – Mechatronics, biomechatronics and mechanism technology – Systems engineering – Productive teaming - Human-machine collaboration in the production environment The topics are oriented on key strategic aspects of research and teaching in Mechanical Engineering at our university