INTRODUCTION
MPEG-4
is an interactive virtual environment. In this virtual environment, natural
and synthetic hybrid media are mixed and transmitted over heterogeneous
network. Base on the great success of MPEG-1 and MPEG-2 in the A/V market,
the ISO MPEG group continues to develop their next standard - MPEG-4 that
is expected to be completed by Dec. 1998. Under the trend of the integration
of computer, communication, consumer electronic, and contents, MPEG-4 targets
on these issues: authoring and encoding of object-oriented scene, encoding
of natural and synthetic media, media streaming, uniform transmission interface
in heterogeneous network environments. The goal of the Project MPEG-4 Scene
Description Editor/Browser is to implment the Editor which can provide
author the visual edit environment to edit the MPEG-4 scene and browse
and play it immediately.
Feature of MPEG-4 Editor/Browser
1. Scalability
For multimedia applications demand, scalability is the most important property of MPEG-4 standard. Not only for different user demand, computer computation power difference and herergeneous computer network are also scalability consideration. Our project is focus on three properties:
Quality Scalability Spatial Scalability Temporal Scalability
2. Interactivity
For multimedia content representation, user have more decision than before. User can determine multimedia how to represent on screen. Such as following:
For multimedia content transmission, MPEG-4 not specifize proprietary network standard. MPEG-4 define DMIF for network transmission interface to integrate different network standard, and provide Qos (Quality Of Service) for user interaction.
4. Support Natural and Synthetic Scenes
Another feature of MPEG-4 is natural and synthetic scene coexistence. By MPEG-4 scene description language, multimedia content creator can integrate multimedia object of different type into the same scene. So MPEG-4 scene description language is also important intention of our MPEG-4 project.
Component tool of MPEG-4 Editor/Browser
The
appropriate MPEG-4 Scene Description Editor/Brower should contain the following
tools
Application of MPEG-4
1 Realtime Communication ¡]¢â¢ä phone¡BSurveillance¡^
2 Surveillance ¡]Resource¡BWatching¡^
3 Moblile Multimedia ¡]¢Þ¢Ò¢Ï¡APortable PC¡^
4 Virtual City Guide Tour
5 DVD
6 Contents base Storage and Retrieval
7 Internet / Intranet Video Distribution
8 Broadcasting
9 Post Production on Studio and TV
10 Visualization of Harmonized Scene ¡]Remote Cooperation Works¡^
11 Application of Face Animation ¡]Virtual Meeting¡^
12 Digital Radio Broadcasting
Relation Research
Project member
Liu,
Deng-Rung ( Ph.D student
)
Huang, Yi-Chin ( Ph.D student )
Shieh, Meng-Jyi ( master student )
Wang, Hung-Chen ( master student )
Lin, Ang-Sheng ( master student )
Wang, Cheng-Sheng ( master student )
WoWoWo ( master student )