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30 results for “3D photogrammetry”
Experimental studies on snaking in 3D-printed cylindrical shells under axial compression using photogrammetry
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Fig. 6.7. Bone retoucher digitised with photogrammetry using a in Handbook of best practice and standards for 2D+ and 3D imaging of natural history collections
Fig. 6.7. Bone retoucher digitised with photogrammetry using a zoom lens (Ptg 18–55), a fixed focal macro lens (Ptg 100), focus stacking photogrammetry (FS-Ptg 60), structured light (SL) and microCT (µCT).
3D photogrammetry as a low cost and noninvasive method for acoustic modeling of animal hearing
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Supplementary 1: Underwater photogrammetry for close-range 3D imaging of dry-sensitive objects: The case study of cephalopod beaks
<ul> <li>Technical advances in 3D imaging have contributed to quantifying and understanding biological variability and complexity. However, small, dry-sensitive objects are not easy to reconstruct using common and easily available techniques such as photogrammetry, surface scanning, or micro-CT scanning. Here we use cephalopod beaks as an example as their size, thickness, transparency, and dry-sensitive nature make them particularly challenging. We developed a new, underwater, photogrammetry protocol in order to add these types of biological structures to the panel of photogrammetric possibilities.</li> <li>We used a camera with a macro-photography mode in a waterproof housing fixed in a tank with clear water. The beak was painted and fixed on a colored rotating support. Three angles of view, two acquisitions, and around 300 pictures per specimen were taken in order to reconstruct a full 3D-model. These models were compared to others obtained with micro-CT scanning to verify their accuracy.</li> <li>The models can be obtained quickly and cheaply compared to micro-CT scanning, and have sufficient precision for quantitative inter-specific morphological analyses. Our work shows that underwater photogrammetry is a fast, non-invasive, efficient, and accurate way to reconstruct 3D models of dry-sensitive objects while conserving their shape. While the reconstruction of the shape is accurate, some internal parts cannot be reconstructed with photogrammetry as they are not visible. In contrast, these structures are visible using reconstructions based on micro-CT scanning. The mean difference between both methods is very small (10<sup>-5</sup> to 10<sup>-4</sup> mm) and is significantly lower than differences between meshes of different individuals.</li> <li>This photogrammetry protocol is portable, easy-to-use, fast, and reproducible. Micro-CT scanning, in contrast, is time-consuming, expensive and non-portable. This protocol can be applied to reconstruct the 3D shape of many other dry-sensitive objects such as shells of shellfish, cartilage, plants and other chitinous materials.</li> </ul>
3D model of the stone surface with texture - Application of Forensic Photogrammetry and 3D Modelling to Improve Epigraphic Reading: Study of the Roman Altar of Gravesano (Ticino, Switzerland)
<p>Video of the 3D model of the stone surface with textures.</p>
Supplementary 1: Underwater photogrammetry for close-range 3D imaging of dry-sensitive objects: The case study of cephalopod beaks
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3D Photogrammetry | Water Pot Merchandise
My 3D reconstruction generated with photogrammetry software 3DF Zephyr v4.530 processing 93 images Source: Objaverse 1.0 / Sketchfab
Buddha statue - PHOTOGRAMMETRY 3D REVERSE MODEL
Statue of a Buddha, dimensions: 70x50x250 mm Source: Objaverse 1.0 / Sketchfab
Rundum-Fotos des sog. Rebecchino im Kunsthistorischen Museum Wien, SAM 433 zur Erstellung eines 3D-Modells mittels Photogrammetrie
<p>Instrument: [<i>rubechetta (piccola)</i>] <br>Museumsbezeichnung: Rebecchino <br>Herkunftsland: Italien (?)<br>Hersteller: Anonymus <br>Datierung: 15. Jahrhundert (?) <br>Aufbewahrungsort: Wien, Kunsthistorisches Museum, Sammlung alter Musikinstrumente <br>Inventarnummer: SAM 433</p><p>Hüllmasse (Museumsangabe): 375 x 90 x 65 mm</p><p>Material: <br>Korpus: Birnbaum (?)</p><p>Fotos: Thilo Hirsch, 9.–10.12.2019</p><p>Technische Angaben zu den Fotos: <br>Kamera: Nikon D7200 <br>Farbraum: RGB <br>Brennweite: 35 mm</p><p>Die Fotos wurden im RAW-Format gemacht und müssen teilweise noch entsprechend aufgehellt werden, da für die Beleuchtung nur LED-Lampen verwendet wurden. Das erst Foto (0_Rebecchino_Wien_SAM_433_TH_X-Rite_Farbkarte) beinhaltet eine X-Rite Farbkarte für den Weissabgleich und die Farbkorrektur. Die Angaben zu Blendenzahl, Belichtungszeit und ISO-Empfindlichkeit finden sich in den einzelnen Bildinformationen.</p><p>Bibliografie: Thilo Hirsch, Marina Haiduk, "Mehr Aug' als Ohr? Das Rebecchino im Kunsthistorischen Museum Wien", in: <i>Glareana </i>2020, H. 2, S. 7–35. <a href="http://www.gefam.ch/content/page07.GLAREANA/Archiv/2020-2.pdf">http://www.gefam.ch/content/page07.GLAREANA/Archiv/2020-2.pdf</a></p><p>Um einen Download Link zu bekommen, muss zuerst das Formular «request access» ausgefüllt und abgeschickt werden. Daraufhin bekommen Sie die Aufforderung, eine Genehmigung des Kunsthistorischen Museums Wien, Sammlung alter Musikinstrumente zur Verwendung der Daten einzuholen. Sobald diese vorliegt, wird der Download-Link verschickt. </p>
Rundum-Fotos der sog. Wartburg-Quinterne zur Erstellung eines 3D-Modells mittels Photogrammetrie
<p>Instrument: Quinterne <br>Herkunftsland: Deutschland? <br>Instrumentenzettel: "Hans Ot [zu?] / Nuremberg" <br>Datierung: 15. Jahrhundert? <br>Aufbewahrungsort: Eisenach, Wartburg <br>Inventarnummer: KH50</p><p>Masse: <br>Gesamtlänge: 689 mm <br>Breite: 229 mm</p><p>Material: <br>Korpus: Ahorn <br>Decke: Fichte <br>Rosette: Pergament <br>Griffbrett: Birnbaum/Mooreiche <br>Anhängestifte: Messing <br>Wirbel: Ahorn <br>Untersattel/Steg: Mahagoni mit Elfenbeineinlage</p><p>Fotos: Thilo Hirsch, 16.–16.8.2021</p><p>Technische Angaben zu den Fotos: <br>Kamera: Nikon D7200 <br>Farbraum: RGB <br>Brennweite: 35 mm</p><p>Die Fotos wurden im RAW-Format (.nef) gemacht und müssen teilweise noch entsprechend aufgehellt werden, da für die Beleuchtung nur LED-Lampen verwendet werden konnten. Das erste Foto beinhaltet eine X-Rite Farbkarte für den Weissabgleich und die Farbkorrektur. Die Angaben zu Blendenzahl, Belichtungszeit und ISO-Empfindlichkeit finden sich in den einzelnen Bildinformationen.</p><p>Um einen Download Link zu bekommen, muss zuerst das Formular «request access» ausgefüllt und abgeschickt werden. Daraufhin bekommen Sie die Aufforderung, eine Genehmigung der Wartburg-Stiftung zur Verwendung der Daten einzuholen. Sobald diese vorliegt, wird der Download-Link verschickt.</p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.