| 1. Identity statement | |
| Reference Type | Conference Paper (Conference Proceedings) |
| Site | sibgrapi.sid.inpe.br |
| Holder Code | ibi 8JMKD3MGPEW34M/46T9EHH |
| Identifier | 8JMKD3MGPBW4/35S6KT8 |
| Repository | sid.inpe.br/sibgrapi@80/2009/08.17.22.40 |
| Last Update | 2009:08.17.22.40.22 (UTC) administrator |
| Metadata Repository | sid.inpe.br/sibgrapi@80/2009/08.17.22.40.23 |
| Metadata Last Update | 2022:06.14.00.14.02 (UTC) administrator |
| DOI | 10.1109/SIBGRAPI.2009.29 |
| Citation Key | GuoIshwKonr:2009:AcReVi |
| Title | Action recognition in video by covariance matching of silhouette tunnels  |
| Format | Printed, On-line. |
| Year | 2009 |
| Access Date | 2024, Apr. 29 |
| Number of Files | 1 |
| Size | 207 KiB |
| 2. Context | |
| Author | 1 Guo, Kai 2 Ishwar, Prakash 3 Konrad, Janusz |
| Affiliation | 1 Boston University 2 Boston University 3 Boston University |
| Editor | Nonato, Luis Gustavo Scharcanski, Jacob |
| e-Mail Address | pi@bu.edu |
| Conference Name | Brazilian Symposium on Computer Graphics and Image Processing, 22 (SIBGRAPI) |
| Conference Location | Rio de Janeiro, RJ, Brazil |
| Date | 11-14 Oct. 2009 |
| Publisher | IEEE Computer Society |
| Publisher City | Los Alamitos |
| Book Title | Proceedings |
| Tertiary Type | Full Paper |
| History (UTC) | 2010-08-28 20:03:26 :: pi@bu.edu -> administrator :: 2022-06-14 00:14:02 :: administrator -> :: 2009 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Version Type | finaldraft |
| Keywords | video analysis action recognition silhouette tunnel covariance matching generalized eigenvalues |
| Abstract | Action recognition is a challenging problem in video analytics due to event complexity, variations in imaging conditions, and intra- and inter-individual action-variability. Central to these challenges is the way one models actions in video, i.e., action representation. In this paper, an action is viewed as a temporal sequence of local shape-deformations of centroid-centered object silhouettes, i.e., the shape of the centroid-centered object silhouette tunnel. Each action is represented by the empirical covariance matrix of a set of 13-dimensional normalized geometric feature vectors that capture the shape of the silhouette tunnel. The similarity of two actions is measured in terms of a Riemannian metric between their covariance matrices. The silhouette tunnel of a test video is broken into short overlapping segments and each segment is classified using a dictionary of labeled action covariance matrices and the nearest neighbor rule. On a database of 90 short video sequences this attains a correct classification rate of 97%, which is very close to the state-of-the-art, at almost 5-fold reduced computational cost. Majority-vote fusion of segment decisions achieves 100% classification rate. |
| Arrangement 1 | urlib.net > SDLA > Fonds > SIBGRAPI 2009 > Action recognition in... |
| Arrangement 2 | urlib.net > SDLA > Fonds > Full Index > Action recognition in... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| data URL | http://urlib.net/ibi/8JMKD3MGPBW4/35S6KT8 |
| zipped data URL | http://urlib.net/zip/8JMKD3MGPBW4/35S6KT8 |
| Language | en |
| Target File | IEEE-PID949748_final_submission.pdf |
| User Group | pi@bu.edu |
| Visibility | shown |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPEW34M/46SJQ2S 8JMKD3MGPEW34M/4742MCS |
| Citing Item List | sid.inpe.br/sibgrapi/2022/05.14.19.43 4 |
| Host Collection | sid.inpe.br/banon/2001/03.30.15.38 |
| 6. Notes | |
| Empty Fields | archivingpolicy archivist area callnumber contenttype copyholder copyright creatorhistory descriptionlevel dissemination documentstage edition electronicmailaddress group isbn issn label lineage mark mirrorrepository nextedition notes numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project readergroup readpermission resumeid rightsholder schedulinginformation secondarydate secondarykey secondarymark secondarytype serieseditor session shorttitle sponsor subject tertiarymark type url volume |