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 500-712, S. Korea

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 500-712, S. Korea

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

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

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”

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.

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

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

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)

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