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Stereoscopic video signals are key-mixed by disparity control

: Ohm, J.-R.; Hohne, H.D.

Schröder, H. ; Informationstechnische Gesellschaft -ITG-:
Multimedia: Anwendungen, Technologie, Systeme. Vorträge des 7. Dortmunder Fernsehseminars
Berlin: VDE-Verlag, 1997 (ITG-Fachbericht 144)
ISBN: 3-8007-2308-5
Dortmunder Fernsehseminar <7, 1997, Dortmund>
Conference Paper
Fraunhofer HHI ()
multimedia systems; stereo image processing; video signal processing; stereoscopic video signals; disparity control; video signal key-mixing; stereoscopic video signal mixing; position control; z-key method; graphics handling; stereoscopic scene mixing; chroma key mixing; programming system; scaling calculations; z-key process

Describes methods for mixing stereoscopic video signals, where automatic size and position control is needed to maintain plausibility between varying foreground and background. The Z-key method is used. Applications for stereoscopic video and graphics handling are mentioned. Images showing stereoscopic scene mixing are reproduced. Suggests that chroma key mixing may be employed for maintaining plausibility. Reference is made to a programming system without penetrating into the background. Scaling calculations are presented. This leads to an explanation of the Z-key process originally described by T. Kanade et al. (1996).