Abstract
This paper presents an H.323 standard compliant virtual video conferencing system. The proposed system not only serves as a multipoint control unit (MCU) for multipoint connection but also provides a gateway function between the H.323 LAN (local-area network) and the H.324 WAN (wide-area network) users. The proposed virtual video conferencing system provides user-friendly object compositing and manipulation features including 2D video object scaling, repositioning, rotation, and dynamic bit-allocation in a 3D virtual environment. A reliable, and accurate scheme based on background image mosaics is proposed for real-time extracting and tracking foreground video objects from the video captured with an active camera. Chroma-key insertion is used to facilitate video objects extraction and manipulation.We have implemented a prototype of the virtual conference system with an integrated graphical user interface to demonstrate the feasibility of the proposed methods.
Highlights
With the rapid growth of multimedia signal processing and communication, virtual meeting technologies are becoming possible
We propose a virtual conference multipoint control unit (VCMCU) which adopts the H.263 [11] video coding standard
Reliable, and accurate scheme for extracting and tracking foreground video objects from the video captured with an active camera
Summary
This paper presents an H.323 standard compliant virtual video conferencing system. The proposed system serves as a multipoint control unit (MCU) for multipoint connection and provides a gateway function between the H.323. The proposed virtual video conferencing system provides userfriendly object compositing and manipulation features including 2D video object scaling, repositioning, rotation, and dynamic bit-allocation in a 3D virtual environment. A reliable, and accurate scheme based on background image mosaics is proposed for real-time extracting and tracking foreground video objects from the video captured with an active camera. Chroma-key insertion is used to facilitate video objects extraction and manipulation. Keywords and phrases: video conference, virtual meeting, immersive video conference, networked multimedia, multipoint control unit, MCU, multimedia over IP, object segmentation, object tracking
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