Full Seminar Details

Alexei Yavlinky

Multimedia and Information Systems Group, Dept of Computing, Imperial College London

 Alexei Yavlinky
Efficient Re-indexing of Automatically Annotated Image Collections Using Keyword Combination
This event took place on Friday 20 October 2006 at 11:30

I will present a framework for improving the image index obtained by automated image annotation. Within this framework, the technique of keyword combination is used for fast image re-indexing based on initial automated annotations. It aims to tackle the challenges of limited vocabulary size and low annotation accuracies resulting from differences between training and test collections. It is useful for situations when these two problems are not anticipated at the time of annotation. I will show that based on example images from the automatically annotated collection, it is often possible to find multiple keyword queries that can retrieve new image concepts which are not present in the training vocabulary, and improve retrieval results of those that are already present. This can be done at a very small computational cost and at an acceptable performance tradeoff, compared to traditional annotation models. I will report results on TRECVID 2005, Getty Image Archive, and Web image datasets, the last two of which were specifically constructed to support realistic retrieval scenarios.

Download PowerPoint presentation (9Mb ZIP file)

Watch the webcast replay >>

Jobs

Front-end Web Developer and UX Designer (GR7)

Knowledge Media Institute (KMi)
£33,199 - £39,609
Based in Milton Keynes
Temporary contract up to 20 months

The team at the OU runs the world’s largest aggregator of research papers called CORE (core.ac.uk), with about 1.5 million monthly active users, and a set of projects promoting principles of Open Science, such as FOSTER (fosteropenscience.eu)....

Front-end Web Developer and UX Designer (GR6)

Knowledge Media Institute (KMi)
£27,025 - £32,236
Based in Milton Keynes
Temporary contract up to 20 months

The team at The Open University runs the world’s largest aggregator of research papers called CORE (core.ac.uk), with about 1.5 million monthly active users, and a set of projects promoting principles of Open Science, such as FOSTER...

Mobile Applications Developer (GR6)

Knowledge Media Institute (KMi)
£27,025 - £32,236
Based in Milton Keynes
Permanent Appointment

The Research and Innovation Software team develop software for a range of research projects and University courses. With this role we are looking for someone who can be a mobile applications developer for the team. This would involve both...

CONTACT US

Knowledge Media Institute
The Open University
Walton Hall
Milton Keynes
MK7 6AA
United Kingdom

Tel: +44 (0)1908 653800

Fax: +44 (0)1908 653169

Email: KMi Support

COMMENT

If you have any comments, suggestions or general feedback regarding our website, please email us at the address below.

Email: KMi Development Team