A stochastic framework for optimal key frame extraction from MPEG video databases
Computer Vision and Image Understanding - Special issue on content-based access for image and video libraries
An Online Algorithm for Segmenting Time Series
ICDM '01 Proceedings of the 2001 IEEE International Conference on Data Mining
Data Mining in Time Series Database
Data Mining in Time Series Database
Distinctive Image Features from Scale-Invariant Keypoints
International Journal of Computer Vision
Symbolic representation and retrieval of moving object trajectories
Proceedings of the 6th ACM SIGMM international workshop on Multimedia information retrieval
Robust and fast similarity search for moving object trajectories
Proceedings of the 2005 ACM SIGMOD international conference on Management of data
Camera Motion Characterization through Image Feature Analysis
ICCIMA '05 Proceedings of the Sixth International Conference on Computational Intelligence and Multimedia Applications
ACM Computing Surveys (CSUR)
Scene duplicate detection based on the pattern of discontinuities in feature point trajectories
MM '08 Proceedings of the 16th ACM international conference on Multimedia
Video event detection using motion relativity and visual relatedness
MM '08 Proceedings of the 16th ACM international conference on Multimedia
Subtrajectory-based video indexing and retrieval
MMM'07 Proceedings of the 13th international conference on Multimedia Modeling - Volume Part I
Real-Time Motion Trajectory-Based Indexing and Retrieval of Video Sequences
IEEE Transactions on Multimedia
Motion Flow-Based Video Retrieval
IEEE Transactions on Multimedia
Detecting moving objects, ghosts, and shadows in video streams
IEEE Transactions on Pattern Analysis and Machine Intelligence
Models for motion-based video indexing and retrieval
IEEE Transactions on Image Processing
IEEE Transactions on Image Processing
Object Trajectory-Based Activity Classification and Recognition Using Hidden Markov Models
IEEE Transactions on Image Processing
Rapid scene analysis on compressed video
IEEE Transactions on Circuits and Systems for Video Technology
A fully automated content-based video search engine supporting spatiotemporal queries
IEEE Transactions on Circuits and Systems for Video Technology
NeTra-V: toward an object-based video representation
IEEE Transactions on Circuits and Systems for Video Technology
IEEE Transactions on Circuits and Systems for Video Technology
Automatic segmentation of moving objects in video sequences: a region labeling approach
IEEE Transactions on Circuits and Systems for Video Technology
Motion-based video retrieval by trajectory matching
IEEE Transactions on Circuits and Systems for Video Technology
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In this paper, we propose a novel motion-based video retrieval approach to find desired videos from video databases through trajectory matching. The main component of our approach is to extract representative motion features from the video, which could be broken down to the following three steps. First, we extract the motion vectors from each frame of videos and utilize Harris corner points to compensate the effect of the camera motion. Second, we find interesting motion flows from frames using sliding window mechanism and a clustering algorithm. Third, we merge the generated motion flows and select representative ones to capture the motion features of videos. Furthermore, we design a symbolic based trajectory matching method for effective video retrieval. The experimental results show that our algorithm is capable to effectively extract motion flows with high accuracy and outperforms existing approaches for video retrieval.