Type

Journal Article

Authors

Alan F. Smeaton
Cathal Gurrin
Rami Albatal
Zhenxing Zhang

Subjects

Computer Science

Topics
lifelog artificial intelligence multimedia indexing information retrieval state of the art instance search weak geometric correlation consistency multimedia systems

Enhancing instance search with weak geometric correlation consistency (2016)

Abstract Finding object instances from within in large image collections is a challenging problem with many practical applications. Recent methods inspired by text retrieval have achieved good results, however a re-ranking stage based on spatial verification may still be required to boost performance. To improve the effectiveness of such instance retrieval systems while avoiding the computational complexity of a re-ranking stage, we explore the geometric correlations among local features, and we incorporate these correlations with each individual match to form a transformation consistency in rotation and scale space. This weak geometric correlation consistency can be used to effectively eliminate inconsistent feature matches in instance retrieval and can be applied to all candidate images at a low computational cost. Experimental results on three standard evaluation benchmarks show that the proposed approach results in a substantial performance improvement when compared with other state-of-the-art methods. In addition, the evaluation results from participating in the Instance Search Task in the TRECVid evaluation campaign also suggest that our proposed approach enhances retrieval performance for large scale video collections.
Collections Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools: Faculty of Engineering and Computing: School of Computing
Ireland -> Dublin City University -> Subject = Computer Science: Artificial intelligence
Ireland -> Dublin City University -> Publication Type = Article
Ireland -> Dublin City University -> Status = Published
Ireland -> Dublin City University -> Subject = Computer Science: Lifelog
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

Full list of authors on original publication

Alan F. Smeaton, Cathal Gurrin, Rami Albatal, Zhenxing Zhang

Experts in our system

1
Alan F. Smeaton
Dublin City University
Total Publications: 492
 
2
Cathal Gurrin
Dublin City University
Total Publications: 238
 
3
Rami Albatal
Dublin City University
Total Publications: 30
 
4
Zhenxing Zhang
Dublin City University
Total Publications: 13