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Thursday, October 1 • 09:00 - 10:00
Keynote - Luc Van Gool

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Photometric Stereo Lets the Small Look Great

Photometric stereo extracts the shape of objects by illuminating them from know directions and by observing how the shading patterns change. At the KU Leuven a "mini-dome" has been built to ease such processes. This mini-dome consists of a hemi-spherical structure, enclosing the object, with a camera looking down towards the center from the top, and covered with multiple LEDs. The latter are activated one by one and each time the camera takes a picture. The object shape can then be integrated out of the estimated local surface orientations. The overall shape (low frequency component of the 3D information) can best be acquired through an additional scanning, but photometric stereo is great at capturing small details (e.g. imprints, residues of writing, ...) that often are crucial for scholars (high frequency shape information). The good news about the mini-dome is that it can be brought to the artefacts rather than the other way round. Moreover, we have been working on ensuring fast computation, such that throughput can be kept reasonable. Last but not least, such photometric devices also allow one to capture surface reflectance properties that go far beyond fixed texture mapping.

avatar for Luc	Van Gool

Luc Van Gool

ETH Zurich / KULeuven

Thursday October 1, 2015 09:00 - 10:00 CEST
Parque de las Ciencias - Auditorio Avenida de la Ciencia, s/n, 18006 Granada

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