| Revista: | Polibits |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000368526 |
| ISSN: | 1870-9044 |
| Autors: | Thy Tran, Nguyen Anh1 Khanh Dang, Tran2 |
| Institucions: | 1KMS Company, Ho Chi Minh City. Vietnam 2HCMC University of Technology, Faculty of Computer Science & Engineering, Ho Chi Minh City. Vietnam |
| Any: | 2008 |
| Període: | Jul-Dic |
| Número: | 38 |
| País: | México |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, aplicado |
| Resumen en inglés | The growing amount of multimedia data available to the average user has reached a critical phase, where methods for indexing, searching, and efficient retrieval are needed to manage the information overload. Many research works related to this field have been conducted within the last few decades and consequently, some video database models have been proposed. Most of the modern video database models make use of hierarchical structures to organize huge amount of videos to support video retrieval efficiently. Even now, among open research issues, video database access control is still an interesting research area with many proposed models. In this paper, we present a hybrid video database model which is a combination of the hierarchical video database model and annotations. In particular, we extend the original hierarchical indexing mechanism to add frames and salient objects at the lowest granularity level in the video tree with the aim to support multi–level access control. Also, we give users more solutions to query for videos based on the video contents using annotations. In addition, we also suggest the original database access control model to fit the characteristics of video data. Our modified model supports both multiple access control policies, meaning that a user may be affected by multiple polices, and multi–level access control, meaning that an authorization may be specified at any video level. Theoretical analyses and experimental results with real datasets are presented that confirm the correctness and efficiency of our approach |
| Disciplines | Ciencias de la computación |
| Paraules clau: | Procesamiento de datos, Bases de datos, Video, Recuperación de información, Control de acceso, Sistemas de seguridad |
| Keyword: | Computer science, Data processing, Data bases, Video, Information retrieval, Access control, Security systems, Defense systems |
| Text complet: | Texto completo (Ver HTML) |
