For those of you interested in the poster I uploaded it here.

I also uploaded the presentation to slideshare.

Lire has the ability to create indexes with lots of different features (descriptors, like RGB color histograms or CEDD). While this opens the opportunity to flexibility at search time as we can select the feature at the time we create a query, the index tends to get bigger and bigger and searcher take longer and longer.

With a data set of 121,379 images the index created with the features selected for default in Lire Demo has a size of 14,3 GB on the disk. In contrast to that an index just storing the CEDD feature along with the image identifier has a size of 29 MB.

Due to the size of the index also linear search tends to get slower. While for the index stripped down to the CEDD feature and the identifier searching takes (on a AMD Quad-Core computer with 4GB RAM and Java 1.7) roughly 0.33 seconds, searching the big index takes 7 minutes and 3 seconds.

So if you want to index and search big data sets (> 100.000 images for instance) I recommend to

• select which features you need,
• create the index with a minimum set of features, and
• eventually split the index per feature and select the index on the fly instead of the feature
• also you can load the index into RAM

For more on loading the index to RAM and the option to use local features read on in the developer wiki.

I co-authored the paper with Savvas Chatzichristofis:

Mathias Lux, Savvas A. Chatzichristofis. Lire: lucene image retrieval: an extensible java CBIR library. In ACM Multimedia 2008

It’s also the paper I recommend to include in references if Lire is used within a scientific publication, so my thanks also go to the authors citing and therefore pointing to our work!

• Major speed-up due to change and re-write of indexing strategies for local features
• Auto color correlation and color histogram features improved
• Re-ranking filter based on global features and LSA
• Parallel bag of visual words indexing and search supporting SURF and SIFT including incremental index updates (see also in the wiki)
• Added functionality to Lire Demo including support for new Lire features and a new result list view

Download and try:

• Source and binaries (or as tar.bz2)
• Lire Demo

Submission deadline: May 9th, 2011

Find the full call and additional information here.

The International MultiMedia Modeling Conference (MMM) is a leading international conference for researchers and industry practitioners to share their new ideas, original research results and practical development experiences from all MMM related areas. MMM2012 welcomes proposals for special sessions focusing on specific new challenges in multimedia research. Topics of interest include, but are not limited to:

• 3D object and face retrieval
• Annotation and multimedia metadata
• Cross-modal and cross-media analysis and modeling
• Events and actions in multimedia
• Multimedia in interactive entertainment
• Music and audio content analysis
• Modeling user context in multimedia retrieval

Also the topics mentioned in the conference call for papers in the fields of multimedia content analysis, multimedia signal processing and communications, and multimedia applications and services (see also http://mmm2012.org/call-for-papers/) are of interest for the special session.

A typical MMM special session features 5-6 contribution discussing the proposed topic. The proposal should include the following information:

• Tentative title of the proposed special session
• Names and affiliations of the organizers (including brief bio and contact information)
• Session abstract (statement of the significance of topic)
• List of potential contributors (together with tentative paper titles) who agree to submit a paper if the proposal is accepted

Proposals will be evaluated based on the timeliness and significance of the topic, as well as the qualifications of the organizers and the tentative papers proposed.

Papers of accepted special sessions need to be submitted using the MMM2012 conference submission system. Special session organizers will be responsible for managing the review process of the papers submitted to their special sessions. All special session papers will be included in the conference proceedings.

Important dates:

• Proposal submission: June 6, 2011
• Notifications: June 20, 2011
• Papers submission: July 22, 2011

Special session co-chairs:

• Marco Bertini, Università di Firenze, Italy, bertini<at>dsi.unifi.it
• Mathias Lux, Klagenfurt University, Austria, mlux<at>itec.uni-klu.ac.at

For more information, please visit http://www.mmm2012.org/

Streaming video has recently surpassed peer-to-peer networks in terms of network capacity hunger. Reports estimate a share of 40% of peak network capacity dedicated to entertainment, mostly streaming video. A large share of this traffic originates from web based services. YouTube alone takes up to 8% of the prime time internet traffic. So multimedia on the web is currently a big issue. While transmission currently works in a best effort system, multimedia information system on the web are far from being perfect. Retrieval, annotation, validated and useful metadata, reliable and trusted services, and user interaction and context-based adaptation are still under discussion and allow improvement. Currently, the Web itself faces dramatic changes, looking for example at the spread of social networks, Linked Data or the impact of HTML5 or WebM. These activities also have a deep effect on multimedia data and content provider. Following this, we aim to bring together researchers from the area of multimedia and the web to discuss innovative ideas and new directions in this workshop.

Topics of interest

We encourage the submission of high quality papers from applied and basic research as well as applications for multimedia on the web. Submissions have to relate to multimedia on the web, or more specifically on the following topics:

• Annotation of multimedia for the web
• Multimedia databases and metadata models
• Multimedia & metadata adaptation
• Multimedia in the social web
• Multimedia user communities
• Multimedia semantics & ontologies for the web
• Proactive delivery and recommender systems
• Semantic multimedia information services
• User interaction & context
• Web based emergence and self-organization
• Web based multimedia search and retrieval

Organization

The workshop is organized by the Multimedia Metadata Community which has already organized many successful events in the past. The Multimedia Metadata Community aims to extend the active and successful community and network with new members.

Submission

Full-paper submissions are limited to a maximum of 4 pages and demo/poster submission to 2 pages. The papers must be in English and should be formatted according to the IEEE 2-column format. All submitted papers will be issue to a peer review by at least 3 program committee members. The publishing media for the workshop is currently under negotiation and will be announced in subsequent call for papers.

Important Dates

• Submission deadline: April 30th, 2011
• Notification of acceptance: May 20th, 2011
• Camera ready papers due: June 15th, 2011

Chairs

• Laszlo Böszörmenyi, Klagenfurt University, Austria (General Chair)
• Oge Marques, Florida Atlantic University, USA (Co-Chair)
• Mathias Lux, Klagenfurt University, Austria (Co-Chair)
• Ralf Klamma, RWTH Aachen, Germany (Co-Chair)
• Florian Stegmaier, Passau University, Germany (Demo Chair & W3C Liaison)
• Werner Bailer, Joanneum Research, Austria (Demo Chair & W3C Liaison)

Contact

For any requests, please contact chairs [at] mmweb2011 [dot] org.

Links

• Paper at Springerlink
• PDF at stanford.edu