Type

Conference Proceedings

Authors

Carles Ventura
Xavier Giró-i-Nieto
Amaia Salvador
Alan F. Smeaton
Noel E. O'Connor
Cathal Gurrin
Rami Albatal
Feiyan Hu
Zhenxing Zhang
Eva Mohedano
and 1 others

Subjects

Computer Science

Topics
multimedia systems signal processing image processing support vector machine machine learning digital video semantic indexing information retrieval

Insight Centre for Data Analytics (DCU) at TRECVid 2014: instance search and semantic indexing tasks (2014)

Abstract Insight-DCU participated in the instance search (INS) and semantic indexing (SIN) tasks in 2014. Two very different approaches were submitted for instance search, one based on features extracted using pre-trained deep convolutional neural networks (CNNs), and another based on local SIFT features, large vocabulary visual bag-of-words aggregation, inverted index-based lookup, and geometric verification on the top-N retrieved results. Two interactive runs and two automatic runs were submitted, the best interactive runs achieved a mAP of 0.135 and the best automatic 0.12. Our semantic indexing runs were based also on using convolutional neural network features, and on Support Vector Machine classifiers with linear and RBF kernels. One run was submitted to the main task, two to the no annotation task, and one to the progress task. Data for the no-annotation task was gathered from Google Images and ImageNet. The main task run has achieved a mAP of 0.086, the best no-annotation runs had a close performance to the main run by achieving a mAP of 0.080, while the progress run had 0.043.
Collections Ireland -> Dublin City University -> Status = Published
Ireland -> Dublin City University -> Subject = Engineering: Signal processing
Ireland -> Dublin City University -> Subject = Computer Science: Multimedia systems
Ireland -> Dublin City University -> DCU Faculties and Centres = Research Initiatives and Centres: INSIGHT Centre for Data Analytics
Ireland -> Dublin City University -> Subject = Engineering
Ireland -> Dublin City University -> DCU Faculties and Centres = Research Initiatives and Centres
Ireland -> Dublin City University -> Publication Type = Conference or Workshop Item
Ireland -> Dublin City University -> Subject = Computer Science: Image processing
Ireland -> Dublin City University -> Subject = Computer Science
Ireland -> Dublin City University -> Subject = Computer Science: Information retrieval
Ireland -> Dublin City University -> Subject = Computer Science: Digital video
Ireland -> Dublin City University -> Subject = Computer Science: Machine learning

Full list of authors on original publication

Carles Ventura, Xavier Giró-i-Nieto, Amaia Salvador, Alan F. Smeaton, Noel E. O'Connor, Cathal Gurrin, Rami Albatal, Feiyan Hu, Zhenxing Zhang, Eva Mohedano and 1 others

Experts in our system

1
Amaia Salvador
Dublin City University
Total Publications: 5
 
2
Alan F. Smeaton
Dublin City University
Total Publications: 492
 
3
Noel E. O'Connor
Dublin City University
Total Publications: 474
 
4
Cathal Gurrin
Dublin City University
Total Publications: 238
 
5
Rami Albatal
Dublin City University
Total Publications: 30
 
6
Feiyan Hu
Dublin City University
Total Publications: 16
 
7
Zhenxing Zhang
Dublin City University
Total Publications: 13
 
8
Eva Mohedano
Dublin City University
Total Publications: 16