Monthly Archives: July 2009

CfP 3rd Workshop on Many Faces of Multimedia Semantics – Deadline Extension!

Hyatt Regency Mission Bay Spa and Marina
San Diego, California, USA
December 14-16, 2009
https://www-itec.uni-klu.ac.at/ms09/
The 3rd Workshop on Many Faces of Multimedia Semantics will be a one- day workshop to be held during the IEEE International Symposium on Multimedia (ISM’09, http://ism2009.eecs.uci.edu/). It will take place in Dec. 2009 in San Diego, USA.
Objectives
==========
Information is increasingly becoming ubiquitous and all-pervasive, with the World-Wide Web as its primary repository. The rapid growth of information on the Web creates new challenges for information retrieval. Recently, there has been a growing interest in the investigation and development of the next generation web – the Semantic Web.
Multimedia information has always been part of the Semantic Web paradigm, but, in general, has been discussed very simplistically by the Semantic Web community. We believe that, rather than trying to discover a media object’s hidden meaning, one should formulate ways of managing media objects so as to help people make more intelligent use of them. The relationship between users and media objects should be studied. Media objects should be interpreted relative to the particular goal or point-of-view of a particular user at a particular time.
Content-based descriptors are necessary to this process. At the same time, such descriptions are definitely not sufficient. Context is also important, and should be managed. The area of emergent multimedia semantics has been initiated to study the measured interactions between users and media objects, with the ultimate goal of trying to satisfy the user community by providing them with the media objects they require, based on their individual previous media interactions.
The arrival of Web 2.0 has added new paradigms to the media mix. Such concepts as folksonomies, a form of emergent semantics, introduce a collaborative, dynamic approach to the generation of ontologies and media object semantics. That such an approach results in a stable semantics, though surprising, has been recently demonstrated.
As one can see, the field of multimedia semantics is in great flux at the present time. Approaches which seek to unify these disparate disciplines are especially necessary.
This will be a one-day workshop to be held during ISM’09. Besides the standard research contributions, there will also be a poster session and a session devoted to the presentation of results from current Ph.D. students, as well as a keynote talk. Based on last year’s workshop, the keynote will include discussions of necessary research agendas which will bring together important subsets of the research communities working on multimedia semantics, the Semantic Web, and Web 2.0. Best papers of this workshop will be published in IEEE Multimedia.
List of Topics
==============
We welcome all papers relevant to topics in multimedia semantics, including those at the confluence of multimedia information management, the Semantic Web, and Web 2.0, such as,
* Computational semiotics
* Conceptual clustering
* Emergent semantics in the social web
* Event representation and detection
* Folksonomies in social media sharing
* Genre detection
* Industrial use-cases and applications
* Intelligent browsing and visualization
* Media ontology learning
* Media mining in the social web
* Modeling and recognition of visual objects and actions
* Multimedia management and consumption in communities
* Multimedia extraction and social annotation
* Multimedia ontologies for the social web
* Multisensory data integration and fusion for decision making
* Perception and cognition in the context of Web 2.0
* Semantic metadata for mobile applications
* Semantics enabled multimedia applications (including search,
browsing, retrieval, visualization) for the social web
* Social networking
* Spectral methods
* Standards for the social web
* User interfaces
Important Dates
===============
* EXTENDED: 11:59 PM EST, July 27, 2009 — Submissions due
* August 20, 2009 — Acceptance notification
* September 25, 2009 — Camera-ready papers due
Contact
=======
For further information. informal requests or questions please contact the workshop organizers:
* Farshad Fotouhi, Wayne State University, fotouhi@wayne.edu
* William Grosky, University of Michigan-Dearborn, wgrosky@umich.edu
* Mathias Lux, Klagenfurt University, mlux@itec.uni-klu.ac.at
* Peter Stanchev, Kettering University, pstanche@kettering.edu

Hyatt Regency Mission Bay Spa and Marina
San Diego, California, USA
December 14-16, 2009
https://www-itec.uni-klu.ac.at/ms09/

The 3rd Workshop on Many Faces of Multimedia Semantics will be a one- day workshop to be held during the IEEE International Symposium on Multimedia (ISM’09, http://ism2009.eecs.uci.edu/). It will take place in Dec. 2009 in San Diego, USA.

Objectives

Information is increasingly becoming ubiquitous and all-pervasive, with the World-Wide Web as its primary repository. The rapid growth of information on the Web creates new challenges for information retrieval. Recently, there has been a growing interest in the investigation and development of the next generation web – the Semantic Web.

Multimedia information has always been part of the Semantic Web paradigm, but, in general, has been discussed very simplistically by the Semantic Web community. We believe that, rather than trying to discover a media object’s hidden meaning, one should formulate ways of managing media objects so as to help people make more intelligent use of them. The relationship between users and media objects should be studied. Media objects should be interpreted relative to the particular goal or point-of-view of a particular user at a particular time.

Content-based descriptors are necessary to this process. At the same time, such descriptions are definitely not sufficient. Context is also important, and should be managed. The area of emergent multimedia semantics has been initiated to study the measured interactions between users and media objects, with the ultimate goal of trying to satisfy the user community by providing them with the media objects they require, based on their individual previous media interactions.

The arrival of Web 2.0 has added new paradigms to the media mix. Such concepts as folksonomies, a form of emergent semantics, introduce a collaborative, dynamic approach to the generation of ontologies and media object semantics. That such an approach results in a stable semantics, though surprising, has been recently demonstrated.

As one can see, the field of multimedia semantics is in great flux at the present time. Approaches which seek to unify these disparate disciplines are especially necessary.

This will be a one-day workshop to be held during ISM’09. Besides the standard research contributions, there will also be a poster session and a session devoted to the presentation of results from current Ph.D. students, as well as a keynote talk. Based on last year’s workshop, the keynote will include discussions of necessary research agendas which will bring together important subsets of the research communities working on multimedia semantics, the Semantic Web, and Web 2.0. Best papers of this workshop will be published in IEEE Multimedia.

List of Topics

We welcome all papers relevant to topics in multimedia semantics, including those at the confluence of multimedia information management, the Semantic Web, and Web 2.0, such as,

  • Computational semiotics
  • Conceptual clustering
  • Emergent semantics in the social web
  • Event representation and detection
  • Folksonomies in social media sharing
  • Genre detection
  • Industrial use-cases and applications
  • Intelligent browsing and visualization
  • Media ontology learning
  • Media mining in the social web
  • Modeling and recognition of visual objects and actions
  • Multimedia management and consumption in communities
  • Multimedia extraction and social annotation
  • Multimedia ontologies for the social web
  • Multisensory data integration and fusion for decision making
  • Perception and cognition in the context of Web 2.0
  • Semantic metadata for mobile applications
  • Semantics enabled multimedia applications (including search, browsing, retrieval, visualization) for the social web
  • Social networking
  • Spectral methods
  • Standards for the social web
  • User interfaces

Important Dates

  • EXTENDED: 11:59 PM EST, July 27, 2009 — Submissions due
  • August 20, 2009 — Acceptance notification
  • September 25, 2009 — Camera-ready papers due

Contact

For further information. informal requests or questions please contact the workshop organizers:

  • Farshad Fotouhi, Wayne State University, fotouhi@wayne.edu
  • William Grosky, University of Michigan-Dearborn, wgrosky@umich.edu
  • Mathias Lux, Klagenfurt University, mlux@itec.uni-klu.ac.at
  • Peter Stanchev, Kettering University, pstanche@kettering.edu

Caliph & Emir won the ACM Multimedia Open Source Software Competition 2009!

Today in the morning I got the following mail announcing the winner of the ACM Multimedia Open Source Software Competition 2009!

Dear Authors,

It is my pleasure to announce the overall winner of the 2009 ACM Multimedia Open Source Software Competition.  This year, the honor falls on “Caliph & Emir: MPEG-7 photo annotation and retrieval”, an open-source project led by Mathias Lux at Klagenfurt University, Austria (http://sourceforge.net/projects/caliph-emir/).

Congratulations to Mathias and his co-contributors for producing a high-quality open-source implementation of a large part of the MPEG-7 standard, with significant potential impact.

I would also like to thank all of you for participating in this year’s open-source software competition, and for contributing to the research and open-source communities. We had 17 high-quality submissions this year (originating from 12 countries), of which 5 projects were selected by the review committee for presentation, demonstration and publication.

Thank you again for making this a high-quality competition.

Regards,
Apostol (Paul) Natsev, Open Source Competition Chair

After being there last year with LIRe (find the paper here) I know that the open source software competition is a very high level and challenging track. I feel totally honored and I really appreciate this!

Converting video for flash video players to H.264/AAC

Have you ever tried to put a video online? Well actually it is quite easy if you user YouTube. No matter what codec you use you have a good chance to get a decent result. If you want to host the video yourself you basically need a flash video player (assuming that flash is the most widely spread tool on multiple platforms) like the JW FLVPlayer. Finally you’ll need to get your video file to a format flash can play using progressive download (which means you can watch it while downloading, just like on YouTube).

Since Adobe Flash Player 9 Update 3Flash can play back MP4 files with H.264 video and AAC audio streams [see here], so we can just focus on this one. First step is to get a ffmpeg version compiled with libx264 and libfaac. You might check this on the command line, just execute ffmpeg without parameters:

FFmpeg version SVN-r16573, Copyright (c) 2000-2009 Fabrice Bellard, et al.
configuration: [...] –enable-libfaac –enable-libgsm –enable-libx264 [...]

The bold ones should be there to support the needed codecs. I used FFmpeg Revision 16537 from this page, which works fine.

If the libraries are there you can proceed to the next step:

ffmpeg -i <inputfile> -b 1024k -vcodec libx264 \\
-acodec libfaac -ab 160k <output.mp4>

This converts your input file to the needed mp4 file. You can also change the size of the file with the switch “-s”, like for instance “-s 320×240″. Take a close look on the switches “-b” and “-ab” which define video and audio bitrate. If the sum of both bitrates is too high for the network the user will not be able to watch the video smoothly.

One might think s/he’s finished, but no … unfortunately progressive download doesn’t work with too many mp4 files. The file index (an atom == “mp4 metadata unit”) containing the file index (== the description where the video and the audio stream are located in the file and how they are stored) is at the end of the MP4 file. So the flash player has to download the whole file before starting the playback, ka-ching!

Fortunately there is an ffmpeg tool called qt-faststart (linux users will find it in the tools folder of ffmpeg) moving the index from end to start. For windows user a precompiled binary can be found here. Use this to move the metadata:

qt-faststart <infile.mp4> <outfile.mp4>

Now you are done with the file. Use for instance the JW FLVPlayer setup wizard to create an HTML snippet. Note that in height you have to add 19 pixels to your video dimensions, as this is the height of the control bar of the player :-D