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Dynamic Bluescreens

  • Blue screens and chroma keying technology are essential for digital video composition. Professional studios apply tracking technology to record the camera path for perspective augmentations of the original video footage. Although this technology is well established, it does not offer a great deal of flexibility. For shootings at non-studio sets, physical blue screens might have to be installed, orBlue screens and chroma keying technology are essential for digital video composition. Professional studios apply tracking technology to record the camera path for perspective augmentations of the original video footage. Although this technology is well established, it does not offer a great deal of flexibility. For shootings at non-studio sets, physical blue screens might have to be installed, or parts have to be recorded in a studio separately. We present a simple and flexible way of projecting corrected keying colors onto arbitrary diffuse surfaces using synchronized projectors and radiometric compensation. Thereby, the reflectance of the underlying real surface is neutralized. A temporal multiplexing between projection and flash illumination allows capturing the fully lit scene, while still being able to key the foreground objects. In addition, we embed spatial codes into the projected key image to enable the tracking of the camera. Furthermore, the reconstruction of the scene geometry is implicitly supported.show moreshow less

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Metadaten
Document Type:Report
Author: Anselm Grundhöfer, Prof. Dr. Oliver BimberORCiDGND
DOI (Cite-Link):https://doi.org/10.25643/bauhaus-universitaet.1233Cite-Link
URN (Cite-Link):https://nbn-resolving.org/urn:nbn:de:gbv:wim2-20080226-13016Cite-Link
Language:English
Date of Publication (online):2008/02/26
Year of first Publication:2008
Release Date:2008/02/26
Institutes:Fakultät Medien / Juniorprofessur Augmented Reality
Tag:Bildmischung; Chroma Keying; Erweiterte Realität; Projektion
Augmented Reality; Chromakeying; Compositing; Projection
GND Keyword:Association for Computing Machinery / Special Interest Group on Graphics; CGI <Computergraphik>; Maschinelles Sehen; Farbstanzen
Dewey Decimal Classification:700 Künste und Unterhaltung / 770 Fotografie, Computerkunst / 770 Fotografie, Fotografien, Computerkunst
Licence (German):License Logo Creative Commons 4.0 - Namensnennung-Nicht kommerziell (CC BY-NC 4.0)