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Report (Bericht) zugänglich unter
URN: urn:nbn:de:gbv:wim2-20080422-13585
URL: http://e-pub.uni-weimar.de/volltexte/2008/1358/

Superimposing Dynamic Range

Bimber, Oliver ; Iwai, Daisuke

pdf-Format:		Dokument 1.pdf (41.200 KB) (Superimposing Dynamic Range)
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SWD-Schlagwörter:		Bildverarbeitung , CGI <Computergraphik> , Computergraphik
Freie Schlagwörter (Deutsch):		Kontrast , Projektor-Kamera Systeme , Hoher Dynamikumfang
Freie Schlagwörter (Englisch):		Contrast , Projector-Camera Systems , High Dynamic Range
BK - Basisklassifikation:		54.73 Computergraphik
Institut:		Juniorprofessur Augmented Reality
DDC-Sachgruppe:		Informatik
Dokumentart:		Report (Bericht)
Sprache:		Englisch
Erstellungsjahr:		2008
Publikationsdatum:		22.04.2008
Kurzfassung in Englisch:		We present a simple and cost-efficient way of extending contrast, perceived tonal resolution, and the color space of static hardcopy images, beyond the capabilities of hardcopy devices or low-dynamic range displays alone. A calibrated projector-camera system is applied for automatic registration, scanning and superimposition of hardcopies. We explain how high-dynamic range content can be split for linear devices with different capabilities, how luminance quantization can be optimized with respect to the non-linear response of the human visual system as well as for the discrete nature of the applied modulation devices; and how inverse tone-mapping can be adapted in case only untreated hardcopies and softcopies (such as regular photographs) are available. We believe that our approach has the potential to complement hardcopy-based technologies, such as X-ray prints for filmless imaging, in domains that operate with high quality static image content, like radiology and other medical fields, or astronomy.
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