A video conference system under MPEG-4 Overview of face animation in MPEG-4 and study of the compliance level of Eurecom's face animation-teleconferencing system (original) (raw)

User interactive MPEG-4 compatible facial animation system

1999

This paper describes different processes and their interactions needed to generate a virtual environment inhabited by a clone representing real people and virtual autonomous actors. It requires communication between a cloned face (or avatar) and virtual face. This needs the cloning and mimicking aspects to reconstruct the 3D model and movements of the real face. The autonomous virtual face is able to respond and interact through facial expressions and speech. Several main processing are necessary to reach this goal. The processing of the input data is crucial since it represents the only interaction of the user with the virtual world and autonomous actor. We have implemented the processing of the two basic media used in a dialog, which are speech and facial expressions. We also discuss about the implementation of the emotionally autonomous actor. Finally we give a description of the real-time facial animation system. The whole system is based on the MPEG-4 definition of FAP, visemes and expressions.

MPEG-4 3D Graphics: from specifications to the screen

This paper presents a novel implementation of a 3D rendering engine able to display 3D graphics MPEG-4 objects. By using the MPEG-4 SDK (Software Developer Kit), the 3D objects are first decoded and the MPEG-4 scene graph structure is filed. We introduce a scene manager able to address in an optimized manner the rendering requirements. It is developed as part of the rendering engine and it enables to create an appropriate form representation of the data resources. The novel concept implemented here is to consider the scene management with respect to the rendering constraints and not to the representation of the data as in a usual MPEG-4 approach. This paper describes the software communication procedures between the MPEG-4 SDK and the rendering scene management in the case of static and animated (skinned) object and some results dealing with the representation of an articulated model illustrate the performances of the developed approach.

ANIMATION: a system for animation scene and contents creation, retrieval, and display [4672-10]

2002

There is an increasing interest in the computer animation. The most of the current animation software tools are described by Richard Parent in . The driving ideas behind animation in general and computer animation in particular are presented in . More and more animations are available in various places on the Internet. The increasing availability of potentially interesting materials makes the search extremely difficult especially when the search is by the animation contents. This work is devoted to analyzing the syntax contents of the animations. In the paper we present the ANIMATION system -a system for animation scene and contents creation, retrieval and display. The system is based on MPEG-4 standard . MPEG-4 is an ISO/IEC standard developed by MPEG (Moving Picture Experts Group). These standard makes interactive video on CD-ROM and Digital Television possible.

An MPEG-4 based interactive multimedia system

IEEE GLOBECOM 1998 (Cat. NO. 98CH36250), 1998

With the rapid convergence in telecommunications, computer, and TVIfilm industries, rigorous efforts are in progress for designing the emerging multimedia standard-MPEG-4. The main features of MPEG-4 z e its content-based interactiviry, ejjicient coding, and universal access. For realizing MPEG-4 based application oriented systems, various issues must be carefully addressed. This paper describes a full scale MPEG-4 based interactive multimedia system project underway at the Video Technology Center of the Hong Kong University of Science and Technology. This project aims to provide complete MPEG-4 based interactive services tailored to various applications. In order to do so, a number of key enabling technologies need to be investigated. These include encoding and decoding, multimedia server design, auser interface, and MPEG-4 stream transmission over high speed networks. The unique features ofthe project are: 1) to explore the feasibility of parallel and distributed technology using Network-of-Workstations (NOWs) to hinder thc intensive computation required for realtime encoding; 2) to provide flexibility of software-based encoding/decoding; 3) to design an intelligent transport service mechanism which can satisfy QoS requirement of MPEG-4.

ANIMATION - a system for animation scene and contents creation, retrieval and display

2002

There is an increasing interest in the computer animation. The most of the current animation software tools are described by Richard Parent in [5]. The driving ideas behind animation in general and computer animation in particular are presented in [6]. More and more animations are available in various places on the Internet. The increasing availability of potentially interesting materials makes the search extremely difficult especially when the search is by the animation contents. This work is devoted to analyzing the syntax contents of the animations. In the paper we present the ANIMATION system-a system for animation scene and contents creation, retrieval and display. The system is based on MPEG-4 standard [3, 4]. MPEG-4 is an ISO/IEC standard developed by MPEG (Moving Picture Experts Group). These standard makes interactive video on CD-ROM and Digital Television possible.

Advanced animation framework for virtual character within the MPEG-4 standard

Proceedings Icip International Conference on Image Processing, 2002

This paper presents an advanced animation framework for virtual character within the MPEG-4 standard. The Bonebased Animation (BBA) specifications are described and it is shown how they extend the MPEG-4 Face and Body Animation (FBA) specifications. Specifically, the scene graph concept, the BBA nodes related to bone and muscle modeling, the animation parameters and the compression capabilities are successively addressed and discussed within a specific application related to a sign language communication system.

ANIMATION: a system for animation scene and contents creation, retrieval, and display

Proceedings of SPIE, 2001

There is an increasing interest in the computer animation. The most of the current animation software tools are described by Richard Parent in [5]. The driving ideas behind animation in general and computer animation in particular are presented in [6]. More and more animations are available in various places on the Internet. The increasing availability of potentially interesting materials makes the search extremely difficult especially when the search is by the animation contents. This work is devoted to analyzing the syntax contents of the animations. In the paper we present the ANIMATION system-a system for animation scene and contents creation, retrieval and display. The system is based on MPEG-4 standard [3, 4]. MPEG-4 is an ISO/IEC standard developed by MPEG (Moving Picture Experts Group). These standard makes interactive video on CD-ROM and Digital Television possible.