Browse Prior Art Database

Cooperative Annotation on Remote Real Objects

IP.com Disclosure Number: IPCOM000114257D
Original Publication Date: 1994-Nov-01
Included in the Prior Art Database: 2005-Mar-28
Document File: 2 page(s) / 65K

Publishing Venue

IBM

Related People

Nakajima, A: AUTHOR [+2]

Abstract

Disclosed is a system that projects a remote user's annotations onto real objects. The objects with clear annotations are shown on remote displays for cooperative discussion. A user adds annotations by means of shared graphic editor functions.

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This is the abbreviated version, containing approximately 68% of the total text.

Cooperative Annotation on Remote Real Objects

      Disclosed is a system that projects a remote user's annotations
onto real objects.  The objects with clear annotations are shown on
remote displays for cooperative discussion.  A user adds annotations
by means of shared graphic editor functions.

      Fig. 1 shows an overview of the system.  Annotations from any
user are projected onto three-dimensional objects by means of a video
projector.  A user at site A makes gestures during cooperative work.
The objects, annotations, and gestures are captured by a video
camera.  The motion video is transmitted to remote sites via a
communication network.  At each site, a shared graphic editor shows
annotations from users as graphic data on a window against the
background color.  The background color is the same as the overlay
color of the video overlay adapter.  Therefore, the motion video is
displayed under the annotations.  Because annotations are treated as
graphic data, the annotations are displayed clearly over the motion
video, even when the annotations come from many users.

      Fig. 2 shows a sample configuration of site A.  The shared
graphic editor (1) handles annotations, which are shown on the
computer display (6) by a graphic adapter (2).  The annotations are
converted into video signals by a scan converter (7), and are
projected onto real objects by means of a video projector (9).  The
objects and projected annotations are captured by a video...