Rui Hu
Markov random fields for sketch based video retrieval
Hu, Rui; James, Stuart; Wang, Tinghuai; Collomosse, John
Authors
Abstract
We describe a new system for searching video databases using free-hand sketched queries. Our query sketches depict both object appearance and motion, and are annotated with keywords that indicate the semantic category of each object. We parse space-time volumes from video to form graph representation, which we match to sketches under a Markov Random Field (MRF) optimization. The MRF energy function is used to rank videos for relevance and contains unary, pairwise and higher-order potentials that reflect the colour, shape, motion and type of sketched objects. We evaluate performance over a dataset of 500 sports footage clips.
Presentation Conference Type | Conference Paper (Published) |
---|---|
Conference Name | ICMR'13: International Conference on Multimedia Retrieval |
Start Date | Apr 16, 2013 |
End Date | Apr 19, 2013 |
Online Publication Date | Apr 16, 2013 |
Publication Date | 2013-04 |
Deposit Date | Dec 13, 2023 |
Publisher | Association for Computing Machinery (ACM) |
Book Title | ICMR '13: Proceedings of the 3rd ACM conference on International conference on multimedia retrieval |
DOI | https://doi.org/10.1145/2461466.2461510 |
Public URL | https://durham-repository.worktribe.com/output/1962775 |
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