The IEEE International Symposium on Multimedia will be held in San Diego, CA. December 14-16, 2009. A variety of workshops will be held in conjunction with this symposium - links are provided below.
The information below is from the ISM 2009 website:
The IEEE International Symposium on Multimedia (ISM2009) is an international forum for researchers to exchange information regarding advances in the state of the art and practice of multimedia computing, as well as to identify the emerging research topics and define the future of multimedia computing. The technical program of ISM2009 will consist of invited talks, paper presentations, and panel discussions.

Submissions of high quality papers describing mature results or on-going work are invited. Topics for submission include but are not limited to:

Multimedia systems, architecture, and applications
Multimedia networking and QoS
Peer-to-peer multimedia systems and streaming
Pervasive and interactive multimedia systems including mobile systems, pervasive gaming, and digital TV
Multimedia meta-modeling techniques and operating systems
Architecture specification languages
Software development using multimedia techniques
Multimedia signal processing including audio, video, image processing, and coding
Visualization
Virtual Reality
Multimedia file systems, databases, and retrieval
Multimedia collaboration
Rich media enabled E-commerce
Computational intelligence including neural networks, fuzzy logic, and genetic algorithms
Intelligent agents for multimedia content creation, distribution, and analysis
Internet telephony and hypermedia technologies and systems
Multimedia security including digital watermark and encryption
Mobile Multimedia Systems and Services
Multimodal Interaction, including Human Factors
Multimodal User Interfaces: Design, Engineering, Modality-Abstractions, etc.
Multimedia tools including authoring, analyzing, editing, and browsing
Conference Organizing Committee
The conference will offer a variety of workshops:The ISM2009 Workshop Call for Proposals can be found here.Papers submitted to each workshop will be reviewed by the program committee and external reviewers of the workshop.The following workshop proposals have now been accepted:DSMSA
Data Semantics for Multimedia Systems and ApplicationsMTEL
Multimedia Technologies for e-Learning
http://www.math.tu-berlin.de/~knipping/ieee/ism09-mtel/MIPR
The Fifth IEEE International Workshop on Multimedia Information Processing and Retrieval
http://www.cis.fiu.edu/conferences/mipr09/MASP
Multimedia Audio and Speech Processing: advancing the state-of-the-art
http://speechlab.ifsc.usp.br/ism2009/

CBTV
Content-based audio/video analysis for novel TV services
http://ism2009.eecs.uci.edu/cbtv09/MS
Third International Workshop on the Many Faces of Multimedia SemanticsAdMIRe
International Workshop on Advances in Music Information Research
http://www.cp.jku.at/conferences/admire2009/Any general questions regarding ISM2009 Workshops and workshop proposals should be directed to the ISM2009 Workshop Co-Chairs:Shu-Ching Chen, Florida International University, USA
Chengcui Zhang, University of Alabama at Birmingham, USA
Atsuo Yoshitaka, Japan Advanced Institute of Science and Technology, Japan
Ilja Radusch, Technische Universitaet Berlin, Germanyat: ismwork@eecs.uci.eduCheck the website for updates.