Adaptive switching of views for a video conference that involves a presentation apparatus

摘要

Techniques are provided for dynamically adapting the view from a conference endpoint that includes a presentation apparatus, such as a whiteboard. A first signal is received that includes a video signal derived from a video camera that is viewing a room during a conference session in which a person is presenting information on a presentation apparatus. During the video conference, switching is performed between the first signal and a second signal representing content being displayed on the presentation apparatus during the conference session for output and transmission to other conference endpoints of the conference session. The determination as to whether to supply the first signal (for a normal view of the conference room) or the second signal may be based on a position determination of the presenter or may be instead be based on an external view selection command received from another conference endpoint participating in the conference session.

主权项

1. A method comprising:
receiving a first signal that includes a video signal derived from a video camera that is viewing a room during a conference session in which a person is presenting information on a presentation apparatus, wherein the video signal provides a perspective view of the presentation apparatus in the room; determining whether the person is outside an operable region with respect to the presentation apparatus; switching between the first signal and a second signal including content to be displayed on the presentation apparatus during the conference session for output and transmission to other conference endpoints of the conference session, such that when it is determined that the person is outside the operable region with respect to the presentation apparatus, the second signal is selected for output, and when it is determined that the person is inside the operable region with respect to the presentation apparatus, the first signal is selected for output; and generating from the video signal a modified video signal representing a rectified view of the presentation apparatus as if viewed substantially head-on by the video camera, wherein the modified video signal is the second signal.