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Real-Time Adaptive Radiometric Compensation

  • Recent radiometric compensation techniques make it possible to project images onto colored and textured surfaces. This is realized with projector-camera systems by scanning the projection surface on a per-pixel basis. With the captured information, a compensation image is calculated that neutralizes geometric distortions and color blending caused by the underlying surface. As a result, theRecent radiometric compensation techniques make it possible to project images onto colored and textured surfaces. This is realized with projector-camera systems by scanning the projection surface on a per-pixel basis. With the captured information, a compensation image is calculated that neutralizes geometric distortions and color blending caused by the underlying surface. As a result, the brightness and the contrast of the input image is reduced compared to a conventional projection onto a white canvas. If the input image is not manipulated in its intensities, the compensation image can contain values that are outside the dynamic range of the projector. They will lead to clipping errors and to visible artifacts on the surface. In this article, we present a novel algorithm that dynamically adjusts the content of the input images before radiometric compensation is carried out. This reduces the perceived visual artifacts while simultaneously preserving a maximum of luminance and contrast. The algorithm is implemented entirely on the GPU and is the first of its kind to run in real-time.show moreshow less

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Metadaten
Document Type:Preprint
Author: Anselm Grundhöfer, Prof. Dr. Oliver BimberORCiDGND
DOI (Cite-Link):https://doi.org/10.25643/bauhaus-universitaet.784Cite-Link
URN (Cite-Link):https://nbn-resolving.org/urn:nbn:de:gbv:wim2-20111215-7848Cite-Link
Language:English
Date of Publication (online):2006/08/21
Year of first Publication:2006
Release Date:2006/08/21
Contributing Corporation:IEEE
Institutes:Fakultät Medien / Juniorprofessur Augmented Reality
Tag:Bildkorrektur; Projekor-Kamera System; Projektion; Radiometrische Kompensation; Visuelle Wahrnehmung
image correction; projection; projector-camera systems; radiometric compensation; visual perception
GND Keyword:Maschinelles Sehen; CGI <Computergraphik>; Bildbasiertes Rendering; Display; Projektionsverfahren
Source:IEEE TVCG (eingereicht)
Dewey Decimal Classification:000 Informatik, Informationswissenschaft, allgemeine Werke / 000 Informatik, Wissen, Systeme / 004 Datenverarbeitung; Informatik
BKL-Classification:54 Informatik / 54.73 Computergraphik
Licence (German):License Logo In Copyright