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. 2024 Mar 11;100(3):234–251. doi: 10.2183/pjab.100.012

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© 2024 The Author(s).

Published under the terms of the CC BY-NC license https://creativecommons.org/licenses/by-nc/4.0/.

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Figure 1. — (Color online) Invisible markers for the geometric registration in DPM.⁴⁶⁾ (a) Projection target. (b) Multiple holes on the bottom of projection target, into which IR LEDs are inserted. (c) Internal structure of the projection target, created using a multi-material 3D printer with embedded optical fibers. The IR light from the LEDs is routed to the surface by the fibers. (d) Captured IR image of the target surface. (e, f) DPM results. (IEEE Trans. Vis. Comput. Graph. 2020, 26, 2030–2040)