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HoloKinect: Holographic 3D Video Conferencing.

Stephen Siemonsma¹, Tyler Bell¹

¹Department of Electrical and Computer Engineering, University of Iowa, Iowa City, IA 52242, USA.

Sensors (Basel, Switzerland)

|November 11, 2022

Summary

HoloKinect enables live, two-way 3D video conferencing using commodity hardware and standard internet. This open-source platform efficiently encodes depth and color data for a hologram-like experience.

Keywords:

3D video conferencing 3D video streaming Microsoft Kinect augmented reality depth encoding multiscopic displays telepresence virtual reality

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High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques

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Published on: December 3, 2013

Area of Science:

Computer Science
Multimedia Systems
Human-Computer Interaction

Background:

The rise of video conferencing has highlighted the need for more immersive communication solutions.
Despite advancements in 3D capture technology, 3D telecommunication remains limited due to hardware and network constraints.
Existing 3D telepresence systems often require specialized and burdensome infrastructure.

Purpose of the Study:

To introduce HoloKinect, an open-source platform for accessible, live, two-way 3D video conferencing.
To enable 3D telecommunication on commodity hardware utilizing standard broadband internet connections.
To investigate the trade-offs between compression and quality in 3D video streaming.

Main Methods:

Utilizing a Microsoft Azure Kinect for 3D data capture (color and depth).
Implementing multiwavelength depth (MWD) encoding to integrate depth maps into standard RGB video streams.
Employing GPU-accelerated H.264 video codecs for efficient compression of the combined data stream.
Analyzing the impact of various depth and video encoding parameters on data loss and visual quality.

Main Results:

HoloKinect successfully enables live, two-way 3D video conferencing on standard hardware and internet.
The platform demonstrated acceptable visual quality across a range of bitrates (3-30 Mbps).
Higher video bitrates and full 4:4:4 chroma sampling yielded the best visual results, with low Root Mean Square Error (RMSE) in depth recovery.

Conclusions:

HoloKinect provides a user-friendly and efficient solution for real-time 3D teleconferencing.
The platform's approach to data encoding and compression makes 3D communication more accessible.
Further optimization of encoding parameters can enhance the visual fidelity and performance of 3D video conferencing systems.