TY - GEN
T1 - Modeling video objects in 4DIS temporal database system
AU - Si, Antonio
AU - Lau, Rynsou W.H.
AU - Li, Qing
AU - Leong, Hong V.
PY - 1998/2/27
Y1 - 1998/2/27
N2 - Video objects are temporal in nature-. A video object is composed of a set of video frames which are related in a total time ordering. By imposing additional timing constraints among video frames, various presentation operators on video objects could be defined. A core set of presentation operators include Play, Pause, Resume, Fast Forward, Fast Backward, Slow Motion, and Stop. A video database system must be able to support the temporal ordering of video frames and the temporal constraints required by any presentation operators. In this paper, we demonstrate how our Four Dimensional Information Space (4DIS) temporal database system is used to model video objects and the presentation operators. Since time is defined as a first class object in 4D1S, querying operators and constraints for time objects are supported. These temporal querying operators and constraints are used to describe the timing requirements of video objects and the presentation operators. This allows users to describe video objects and operators declaratively, without worrying about their low level representation. Furthermore, a user could specify arbitrary operations on video objects using the query language supported by 4DIS. This is in contrast with existing video database systems in which operators on video objects are limited and are defined in advance.
AB - Video objects are temporal in nature-. A video object is composed of a set of video frames which are related in a total time ordering. By imposing additional timing constraints among video frames, various presentation operators on video objects could be defined. A core set of presentation operators include Play, Pause, Resume, Fast Forward, Fast Backward, Slow Motion, and Stop. A video database system must be able to support the temporal ordering of video frames and the temporal constraints required by any presentation operators. In this paper, we demonstrate how our Four Dimensional Information Space (4DIS) temporal database system is used to model video objects and the presentation operators. Since time is defined as a first class object in 4D1S, querying operators and constraints for time objects are supported. These temporal querying operators and constraints are used to describe the timing requirements of video objects and the presentation operators. This allows users to describe video objects and operators declaratively, without worrying about their low level representation. Furthermore, a user could specify arbitrary operations on video objects using the query language supported by 4DIS. This is in contrast with existing video database systems in which operators on video objects are limited and are defined in advance.
KW - Data modeling
KW - Multimedia databases
KW - Object-oriented database
KW - Temporal database
UR - https://www.scopus.com/pages/publications/85002153462
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85002153462&origin=recordpage
U2 - 10.1145/330560.330914
DO - 10.1145/330560.330914
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 897919696
VL - 02-February-1998
SP - 525
EP - 531
BT - Proceedings of the ACM Symposium on Applied Computing
PB - Association for Computing Machinery
T2 - 1998 ACM Symposium on Applied Computing, SAC 1998
Y2 - 27 February 1998 through 1 March 1998
ER -