Interactive teleconferencing display system
First Claim
1. A method for displaying a composite video image of a presenter in front of a selected background image, at multiple remote locations, without loss of detail in the background image or in the presenter'"'"'s image, comprising the steps of,a) storing in a memory at each remote location said selected background image, b) generating a matte signal that identifies those pixels in the video image representing said presenter, c) transmitting to each remote location the signal levels of pixels including said presenter, d) generating a composite video image of said presenter and said stored selected background image by replacing pixel levels in the background image, at corresponding addresses, with pixel levels of said presenter'"'"'s image.
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Abstract
A teleconferencing system in which the video image of a subject in front of a selected background scene is extracted from that scene and transmitted to other locations where selected backgrounds are stored. By compositing the subject and background images at each remote location, both image elements, being originals, will show no loss of detail when projected. For a front projection screen, the projector is inhibited from illuminating a presenter.
49 Citations
18 Claims
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1. A method for displaying a composite video image of a presenter in front of a selected background image, at multiple remote locations, without loss of detail in the background image or in the presenter'"'"'s image, comprising the steps of,
a) storing in a memory at each remote location said selected background image, b) generating a matte signal that identifies those pixels in the video image representing said presenter, c) transmitting to each remote location the signal levels of pixels including said presenter, d) generating a composite video image of said presenter and said stored selected background image by replacing pixel levels in the background image, at corresponding addresses, with pixel levels of said presenter'"'"'s image.
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13. A signal processing apparatus for displaying a composite video image of a presenter in front of a selected background, at multiple locations without loss of detail in the background image or in the presenters image, comprising:
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a) means for storing said selected background image in a memory (26) at each remote location, b) means for generating a matte signal (21) that identifies those pixels in the video image that include the presenter'"'"'s video signal, c) means for transmitting to each remote location the signal levels (23) of pixels comprising said presenter, d) means for compositing (22,25) said presenter over said background, at each remote location, and e) means for displaying (27,29) said composite image. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification