Appeal No. 2002-1047
Application 09/083,174
producing images in a virtual space. See page 1 of Appellants’
specification. In order to form a three-dimensional image by a
computer, it has been conventional practice in the past to resort
to geometry based rendering (GBR) or image based rendering (IBR).
See page 1 of Appellants’ specification. Video conference
systems have been utilized to enable persons present in different
localities to hold a conference. A video conference system
comprises video cameras and display apparatuses provided in rooms
located in different localities. These video cameras and display
apparatuses are connected to each other by means of
telecommunication lines. The prior art video conference system
has the disadvantage that the speaker has to face the display
apparatus which is fixedly held in position and has only a
limited screen area. See page 2 of Appellants’ specification.
To overcome this problem, prior art video conference systems have
utilized two video cameras to provide a stereoscopic vision of
the listeners and allowing the listeners to have stereoscopic
vision of the speaker. Even in this case, however, it is
difficult to allow them to have a stereoscopic vision
irrespective of their visual points. See page 3 of Appellants’
specification. Appellants’ invention is concerned with
eliminating these various difficulties. The primary object of
2
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