1. Lab Seminar Video Presence System with One VS Multi Supported
Netmedia Lab
12/6/2018
Lab Seminar Video Presence System with One VS Multi Supported
Koh Choi
31, January, 2008
Hello everyone!
This talk is about High-quality distributed visualization system
This work is related to KISTI project for this year and my master thesis
GIST Netmedia Lab., Gwangju , S. Korea

2. Contents Introduction & Background Related Work Motivation
Netmedia Lab
Contents
12/6/2018
Introduction & Background
Related Work
Motivation
Proposed Approach
Conclusion
Schedule
For this presentation, I will introduce the concept of high-quality visualization, related work, the challenges for high-quality visualization
And proposed system.
Finally the remaining work
GIST Netmedia Lab., Gwangju , S. Korea

3. Introduction & Background
Video Presence(VP) System
Concept of presence
Psychological sense of "being there" in environment based on technologically founded immersive base
Three types of presence
Personal presence
The extent to which a person feels part of the environment
Social presence
The extent to which others (human and non- human ) exist in the environment
Environmental presence
The extent to which the environment acknowledges and interacts with the participants

4. Introduction & Background(cont)
Prototype VP system
Video Presence
Provide sense of presence by sharing multiple high-quality media
Objective
Develop a system and software for video presence

5. Related Work Cisco Telepresence Others
In-person experiences between individuals, businesses, and events.
People everywhere can work, live, play, and learn together, in person
over the network.
Others
HP “hallo”, Polycom “RPX”, Tandberg “Experia”

6. Motivation Many users want to present reality World issue and market
Immersive Collaboration Meeting
Supporting reality meeting environment
Using concept of presence
World issue and market
Many companys concentrate on this field
Market is a wide scope.

7. Proposed Approch Understand library in VLC
Using by library : libraw1394, libiec 61883, mpeg2 dec, dvgrap
libraw 1394 – Ieee 1394 network acquisition in Linux
Libiec – Channel selection about multiple input stream
Mpeg2 dec – mpeg2 transmission in vlc
Dvgrap – HDV Image capture and play in vlc

8. Conclusion Success chapter 1 : VP system Problem Future work
Two Jvc camera transmission in Tiled display
Similar multi view system(parallel)
Using by VLC and SVC software
Problem
Frame rate very low (CPU limit)
A little delay existence but there is no large difference
Future work
Overcome low frame rate
A cause analysis about frame rate
Examine Two machine or more…
Eliminate delays
Study vlc system and mpeg2 transmission system
Source coding analysis of VLC
Find synchronization method

9. Schedule 1 2 3 4 5 6 7 MPEG2 Transmission System seminar
System analysis
Low frame rate
analysis
Image difference
VP system
(Three camera)
VLC system
And source coding
accomplishment
(1/31)
(2/28)
(2/28)
(2/11)
(4/30)
(7/31)

10. End of my lab seminar. Thank you Any question or comment