Researchers create first-ever interior 3-D map of Leaning Tower of Pisa using breakthrough mobile laser mapping system Sep 18, 2013 http://phys.org/news/2013-09-first-ever-interior-d-tower-pisa.html Enlarge Display of final Zebedee 3D map of the Leaning Tower of Pisa. Developed by the CSIRO, Australia's national science agency, the Zebedee technology is a handheld 3D mapping system incorporating a laser scanner that sways on a spring to capture millions of detailed measurements of a site as fast as an operator can walk through it. Specialised software then converts the system's laser data into a detailed 3D map. While the tower's cramped stairs and complex architecture have prevented previous mapping technologies from capturing its interior, Zebedee has enabled the researchers to finally create the first comprehensive 3D map of the entire building. This technology is ideal for cultural heritage mapping, which is usually very time consuming and labour intensive. It can often take a whole research team a number of days or weeks to map a site with the accuracy and detail of what we can produce in a few hours, said Dr Jonathan Roberts, Research Program Leader at CSIRO's Computational Informatics Division. Within 20 minutes we were able to use Zebedee to complete an entire scan of the building's interior. This allowed us to create a uniquely comprehensive and accurate 3D map of the tower's structure and composition, including small details in the stairs and stonework. During 'Project Pisa', CSIRO also collaborated with local Italian scientists from Scuola Superiore Sant'Anna (SSSA) who believe the research will have significant impact on preserving the cultural heritage of the site. Dr Jonathan Roberts, Program Leader for CSIRO's Computational Informatics Division scanning the Leaning Tower of Pisa with new Zebedee technology. Our detailed record of the Leaning Tower of Pisa may one day be critical in being able to reconstruct the site if it was to suffer catastrophic damage due to natural disasters such as a fire or an earthquake. Having a detailed 3D model of the world's most significant cultural heritage sites could also be used to allow people who cannot physically visit these sites to better understand and appreciate their history and architecture, said Franco Tecchia, Assistant Professor at the PERCRO - Perceptual Robotics lab. In 2012, CSIRO through its Digital Productivity and Services Flagship worked with 3D Laser Mapping, a global developer of laser scanning solutions to commercialise the Zebedee research into the ZEB1 product. As well as its applications in cultural heritage, ZEB1 is also being used to increase efficiencies and improve productivity in a number of different industries. For example, the technology is already assisting mining companies to better manage their operations and helping security forces to quickly scan crime scenes. Enlarge Screen shot of 3D point cloud created from CSIRO's Zebedee scan of the Leaning Tower of Pisa. CSIRO's Zebedee research was recently awarded a 2013 Eureka Prize, often referred to as an 'Australian Oscar of Science', for Innovative Use of Technology. The Australian national science agency's breakthrough 3D mapping system was also recently recognised as the winner of the Research and Development category at the iAwards, Australia's premier ICT awards program.
http://archive.cyark.org/cyark-and-the-scottish-ten-at-the-eastern-qing-tombs-blog CyArk and the Scottish Ten at the Eastern Qing Tombs By: Elizabeth Lee Director of Operations CyArk's Justin Barton scanning on site. Image courtesy of CDDV Team photo with the Topcon system. Image courtesy of CDDV This week marks the close of fieldwork at the Eastern Qing Tombs in China. The project is the third international project of the Scottish Ten , following Mount Rushmore in the United States and Rani Ki Vav in India. The international team has spent almost 4 weeks documenting the imperial mausoleum complex of the Qing Dynasty, located in Zunhua, 125 kilometers northeast of Beijing. The project is occurring in collaboration with the Cultural Relics Department at the Eastern Qing Tombs and the State Administration of Cultural Heritage (SACH). The capture team of Historic Scotland, the Glasgow School of Art, and CyArk is utilizing terrestrial laser scanners as well as a mobile mapping system from Topcon. To read about the first week of the project, check out Scottish Ten Project Manager Dr. Lyn Wilson's blog . CyArk's own Justin Barton joined the team to assist in data management and processing. With multiple scanners running at the same time, this task has been essential in all the Scottish Ten projects. In their time on site the team has collected over 1,000 scans totaling almost 1 terabyte of data! As the team wraps up their final days at the tombs, we look forward to seeing the results of this first CyArk project in China! For more images of the fieldwork and feedback from the team, be sure to visit the Scottish Ten Twitter page . 花了4周的时间;使用了多台地面激光扫描仪(固定+移动);扫描站位超过1000;采集数据近1 TB。
http://exhibition.3d-coform.eu/multiviewdome 文化遗产三维数字化工具。 其技术细节: Equipped with 11 industry grade cameras, 4 projectors, a turntable and a total of 198 individually switchable light-sources, the Multiview Dome is designed to allow an automatic and rapid acquisition of the full appearance of many opaque objects. This allows for the free full-3D observation and arbitrary relighting of the digitized artefacts. The important difference to more commonplace laser- or structured-light-based systems is that light- and view-dependent changes in appearance - which in reality can be observed on virtually every material - are captured as well. Approximately 240,000 digital images of the object are taken fully automatically in a single capture session, lasting from 6 to 10 hours. The resulting virtual surrogate consists of a very detailed 3D mesh and a matching bi-directional texture function (BTF). The latter being a well-suited image based format for illumination- and view-dependent material appearance: The BTF offers generation of faithful images, relighting, interactive viewing and compact storage. This setup is especially meant to be deployed for objects exhibiting interesting material effects, fine details or rich ornaments. The virtual surrogate can provide the observer with the same impression as if inspecting the real artefact, making it even possible to investigate properties such as material composition, cracks and scratches or wear. In contrast to previous full appearance capture setups, the Multiview Dome can be disassembled into separate parts and easily transported and re-assembled to allow on-site capture. Mini Dome The Mini-Dome is a tool to digitise small artefacts, for on-line presentation and analysis, including relighting and filtering functions. This apparatus is a hemispherical structure, with 264 white power LEDs, under computer control. There is one overhead camera, focused on the center of this dome structure. The dome itself consists of 4 shells, which can be easily assembled or disassembled. For the moment, the dome yields IBR results on the basis of estimates of local surface orientation. Cuneiform tablets or coins are good examples for the kind of objects we intend to digitise with the system, and we already collaborate with the assyriologists at the universities of Leuven and Cornell.