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3 results for “Photometric stereo”
Typewriter indentations in a letter by W. H. Auden - visualized with photometric stereo
<p>This figure shows a section of a letter from W. H. Auden to Stella Musulin.</p> <p>Top: conventional photograph.<br> Middle: raking light photograph. Indentations in the paper become visible, but hardly legible.<br> Bottom: a false-color visualization generated with photometric stereo. The simultaneous display of depth, albedo and curvature gradient allow the discrimination of four text layers.</p>
Photometric stereo data of non-crimp fabric boundaries
<p><strong>DATA DESCRIPTION</strong></p> <p>This data set was acquired in the context of EU project ZAero. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 721362. Project duration: 2016/10/01 - 2019/09/30. This data set contains a set of 68 HDF5 files from two different example surface patches of NCF carbon fiber fabrics.</p> <p>For more information about the HDF5 format, please visit the HDF5 Group website:<br> https://www.hdfgroup.org/solutions/hdf5/</p> <p>Each file contains data from a photometric stereo vision system [1]. The data set is intended for evaluation of methods for carbon fiber fabric edge detection [2].</p> <p>Each file contains a single 3-dimensional (W x H x L) array 'raw' with:<br> H...height of the images<br> W...width of the images<br> L...number of images with different light sources (L = 8)</p> <p>An example for loading and visualizing the data in Python comes with this data set:<br> readDataExample.py</p> <p><br> <strong>REFERENCES</strong></p> <p>[1]<br> @inproceedings{Palfinger2011, <br> author = {Palfinger, Werner and Thumfart, Stefan and Eitzinger, Christian},<br> title = {Photometric stereo on carbon fiber surfaces},<br> booktitle = {35th Workshop of the Austrian Association for Pattern Recognition},<br> year = {2011}<br> }</p> <p>[2]<br> @inproceedings{Zambal2019,<br> author = {Zambal, Sebastian and Heindl, Christoph and Eitzinger, Christian}<br> title = {Probabilistic Modelling combined with a CNN for boundary detection of carbon fiber fabrics},<br> booktitle = {IEEE International Conference on Industrial Informatics (INDIN)}<br> year = {2019}<br> }</p> <p> </p> <p> </p>
Photometric Stereo Endoscopy (PSE) as a Tool for Imaging the Rectum and Colon
ClinicalTrials.gov study NCT01979458. IPD Sharing: Not stated. Countries: 1. Publications: 0.
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