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FIGURE 5 in A novel application of the white light/fringe projection duo: recovering high precision three-dimensional images from fossils for the digital preservation of morphology

FIGURE 5. Processed views of a fossil sample acquired by the optical FPP system OTY. Each view is re-oriented 60º degrees with respect to the prior. Where: "a" indicates a zone that has no information at 60º in this stage of the process and will be corrected with the information of the next view, as is shown in "b".

FIGURE 3 in A novel application of the white light/fringe projection duo: recovering high precision three-dimensional images from fossils for the digital preservation of morphology

FIGURE 3. Magnitude maps of the sample obtained every 60º for 8 and 128 pixels/period. The images show the resolution and detail levels given the number of fringes projected over the sample. The measurements' accuracy of surface and depth depends on the number of projected fringes, which include as many as the system can display (8 pixels/period for each fringe in this case). When the acquisition of details is difficult, a wider fringe is required (based on our sample size, we used 128 pixels).

FIGURE 1 in A novel application of the white light/fringe projection duo: recovering high precision three-dimensional images from fossils for the digital preservation of morphology

FIGURE 1. Optical set up specifications for fringe projection profilometry (FPP) used in this study for the recovery of a 3-D image of a hemimandible sample.

FIGURE 7 in A novel application of the white light/fringe projection duo: recovering high precision three-dimensional images from fossils for the digital preservation of morphology

FIGURE 7. Examples of analyses that can be performed with the obtained data from the fossils: 1) denoting the relief (emboss filter), 2) detecting edges and transitions (sobel filter), 3) study of the roughness and waviness of a sample (topography filter).

FIGURE 2 in A novel application of the white light/fringe projection duo: recovering high precision three-dimensional images from fossils for the digital preservation of morphology

FIGURE 2. Flowchart of the 'OTY' procedure employed in this study, where: α = angle (60º in this case), * = MBE algorithm (Gutiérrez-García et al., 2013), and ** = Goldstein algorithm. OTY: name given to the white light system together with the phase shifting algorithm filter, based on the fact that it was developed for use on Ototylomys samples (see main text).

FIGURE 6. Full 3-D in A novel application of the white light/fringe projection duo: recovering high precision three-dimensional images from fossils for the digital preservation of morphology

FIGURE 6. Full 3-D image of the reconstructed fossil after merging all the six views. 1) Cloud of points, 2) Final mesh.

FIGURE 4 in A novel application of the white light/fringe projection duo: recovering high precision three-dimensional images from fossils for the digital preservation of morphology

FIGURE 4. Process applied to recover the topography of the fossil sample. Where: 1) image captured by the CCD of the fringe projection on the sample, 2) wrapped phase obtained of the 8 frames after applying the MBE filter, 3) unwrapped phase map, 4) phase carrier compensation, and 5) surface of one of the views of the fossil recovered.

opencc-by-nc-sa-4.0Nov 2017View details →

Freischütz Digital: data-music, The Academy 2017 Release

This is a copy of the <a href="https://github.com/Freischuetz-Digital/data-music" target="_blank" rel="noopener">Freischütz Digital/data-music</a> repository, which is meant for long-term preservation. A description of the dataset can be found in the readme.md file.

FIGURE 7 in Picking up the pieces: the digital reconstruction of a destroyed holotype from its serial section drawings

FIGURE 7. The state of preservation of the wax model of BP/1/1821. 1, the right side of the snout showing the deformation of the canine; 2, the palate showing the broken vomer; 3, the basicranium showing multiple cracks, nails and sticks around the pterygoid; 4, view of the right orbit showing multiple cracks, nails and sticks; 5, dorsal view of the of the mandible showing multiple cracks, nails and sticks; 6, detail of the inner side of the left ascending ramus of the mandible showing a stick embedded in the wax; and 7, lateral view of the mandible showing the incomplete reflected lamina of the angular. The arrows point to the nails, dotted lines demarcate the cracks. Not to scale.

FIGURE 6 in Picking up the pieces: the digital reconstruction of a destroyed holotype from its serial section drawings

FIGURE 6. Comparison between the digital model (top) and the wax model (bottom), in rostral (left) and lateral views (right). Arrows indicate the direction of deformation of the wax model. Scale bar equals 10 mm.

FIGURE 5 in Picking up the pieces: the digital reconstruction of a destroyed holotype from its serial section drawings

FIGURE 5. Segmentation of the skull bones of BP/1/1821, (1) in the cranium and (2) in the lower jaw. Scale bar equals 10 mm.

FIGURE 4 in Picking up the pieces: the digital reconstruction of a destroyed holotype from its serial section drawings

FIGURE 4. The slices of specimen BP/1/1821 finally put back together again, as seen in the hands of the CT scan facility technician K. Jakata (ESI). This 3D printed model is the first time in 55 years that BP/1/1821 has been accurately reconstructed at life-size.

FIGURE 3 in Picking up the pieces: the digital reconstruction of a destroyed holotype from its serial section drawings

FIGURE 3. The digital model in (1) right lateral, (2) left lateral and (3) ventral view in stereopairs. Scale bar equals 10 mm. See also the supplementary video in Appendix 2.

FIGURE 2 in Picking up the pieces: the digital reconstruction of a destroyed holotype from its serial section drawings

FIGURE 2. Comparison of the different reconstructions of BP/1/1821 in dorsal (left) and ventral (right) views. 1, the wax model; and 2, the original illustrations by Brink, found with the serial section drawings.

FIGURE 1 in Picking up the pieces: the digital reconstruction of a destroyed holotype from its serial section drawings

FIGURE 1. The label on the first page of the serial section drawings. It is written "Specimen N°1821 (FN). MN° 346. Complete Aneumogomphius? skull therocephalian. Sections ½ mm. Magnification x4." The document is signed "A.S. Brink". Abbreviations: FN, Field Number; MN°, Museum Number.

opencc-by-4.0Nov 2022View details →

IBERIFIER Digital Media Dataset

IBERIFIER Digital Media Dataset collects more than 5,000 digital media from Spain and Portugal. This dataset has been produced by the IBERIFIER - Iberian Digital Media Research & Fact-Checking project ( <a href="http://www.iberifier.eu">www.iberifier.eu</a> ; ref. 2020-EU-IA-0252), funded by the European Commission. Coordinated from the University of Navarra, this project is made up of 23 institutions from Spain and Portugal. As regards the data from Spain, this dataset is based on the work carried out in several R+D+i projects financed by the Ministry of Science and Innovation of Spain: USPRINME (2016-2018), ref. CSO2015-64662-C4-1-R ; DIGINATIVEMEDIA (2019-2021), ref. RTI2018-093346-B-C31; and DIGINATIVEMEDIA II (2022-2024), ref. PID2021-122534OB-C22. Regarding the data from Portugal, this dataset is based on the directory of Portuguese media compiled by ERC - Entidade Reguladora para a Comunicação Social (version: Jan. 3th, 2021).

opencc-by-4.0Apr 2023View details →

Extended dataset and Coreq Checklist for 'Teaching critical thinking about health information and choices in secondary schools: human-centred design of digital resources"

Individual user test interview guides and group interview guides for multiple stakeholders Coreq checklist Design reporting checklist

opencc-by-4.0Aug 2024View details →

Digital Elevation Models from Planetary Flyby Images of Mercury and the Moon with Shape and Albedo from Shading

Supplemantary material to Krüll, I., Wohlfarth, K., Tenthoff, M., Wöhler, C., Galluzzi, V., Wright, J., Benkhoff, J., and Zender, J.: Shape and Albedo from Shading with Planetary Flyby Images of Mercury and the Moon, Europlanet Science Congress 2024, Berlin, Germany, 8–13 Sep 2024, EPSC2024-247, https://doi.org/10.5194/epsc2024-247, 2024. Abstract Surface reconstruction of planetary bodies such as the Moon and Mercury is crucial for geomorphological analysis, reflectance normalization, thermal modeling, rover landing site planning, and outreach activities. Stereo algorithms and Shape-and-Albedo-from-Shading (SAfS) are well-established methods for planetary 3D reconstruction. SAfS refines the surface slopes of a stereo Digital Elevation Model (DEM) and typically yields 3D models at image resolution. This approach is well-validated for scientifically calibrated instruments that observe the planetary body under favorable conditions. This work applied the SAfS algorithm to more challenging planetary flyby images acquired with uncalibrated off-the-shelf cameras. We investigated three scenarios: a fly-by image of the Moon captured by a GoPro during the Artemis I mission, a fly-by image of Mercury which was obtained with a monitoring camera during BepiColombo’s third flyby, and a telescope image taken in Wetter, Germany. We qualitatively and quantitatively assessed the algorithm's performance. The results of the two flyby images indicate that, despite the challenging conditions, the SAfS algorithm could reconstruct the surface up to image resolution and increase the level of detail of the input DEM. The reconstructed DEM of the telescope image is the one with the lowest resolution. All in all, our flyby-derived DEMs are accurate. They provide excellent outreach products, as demonstrated by ESA's BepiColombo flyby movie: https://www.esa.int/Science_Exploration/Space_Science/BepiColombo/BepiColombo_s_third_Mercury_flyby_the_movie Dataset We applied the SAfS algorithm to different Regions of Interest (ROIs) in the flyby and telescope images. The ROIs are marked in Artemis_Flyby_ROIs.png, Bepicolombo_Flyby3_ROIs.png and Moon_Telescope_ROIs.png, respectively. For each ROI a DEM is provided centered on the latitude and longitude (0-360, positive east) in the filename. Furthermore a Red/ Blue Stereo anaglyph of the original image was created with the SAfS DEM (for this purpose the height has been exaggerated).

opencc-by-4.0May 2014View details →

FIGURE 11 in Endocranial morphology of the extinct Antillean shrew Nesophontes (Lipotyphla: Nesophontidae) from natural and digital endocasts of Cuban taxa

FIGURE 11. Brain morphology of selected extinct and extant mammals, including Nesophontes spp. Upper row contains extant placentals and marsupials. Lower row contains extinct taxa and Nesophontes. Olfactory lobes are in red, neocortex is in blue, and hindbrain is in green. Scale bar equals 10 mm. Sources: Monodelphis domestica drawn from Rowe et al. (2011); Solenodon paradoxus from Allen (1910); Tenrec ecuadatus from Stephan and Andy (1982); Eoryctes melanus from Thewissen and Gingerich (1989); Hyopsodus lepidus from Orliac et al. (2012); Vincelestes neuquenianus from Macrini et al. (2007a) Nesophontes taxa reported here, and the remaining from the Comparative Brain Collection at www.brainmuseum.org. A and P stand for anterior and posterior. Scale bar = 1 cm.