An intuitive interface based on camera parameters for portable devices
ACM SIGGRAPH 2006 Research posters
Efficient local transformation estimation using Lie operators
Information Sciences: an International Journal
Complexity accuracy tradeoffs of Lie operators in motion estimation
Pattern Recognition Letters
Real-time spatiotemporal segmentation of video objects in the H.264 compressed domain
Journal of Visual Communication and Image Representation
A holistic, in-compression approach to video segmentation for independent motion detection
EURASIP Journal on Advances in Signal Processing
Fast Saliency-Based Motion Segmentation Algorithm for an Active Vision System
ACIVS '08 Proceedings of the 10th International Conference on Advanced Concepts for Intelligent Vision Systems
Noisy MPEG Motion Vector Reduction for Motion Analysis
AVSS '09 Proceedings of the 2009 Sixth IEEE International Conference on Advanced Video and Signal Based Surveillance
Recovering connected error region based on adaptive error concealment order determination
IEEE Transactions on Multimedia
Soccer video event detection by fusing middle level visual semantics of an event clip
PCM'10 Proceedings of the Advances in multimedia information processing, and 11th Pacific Rim conference on Multimedia: Part II
Automatic, robust global motion estimation using clustering
Image Communication
Noisy motion vector elimination by bi-directional vector-based zero comparison
ACCV'10 Proceedings of the 2010 international conference on Computer vision - Volume Part I
A robust and hierarchical approach for camera motion classification
SSPR'06/SPR'06 Proceedings of the 2006 joint IAPR international conference on Structural, Syntactic, and Statistical Pattern Recognition
Robust GME in encoded MPEG video
Proceedings of the 9th International Conference on Advances in Mobile Computing and Multimedia
HMM based soccer video event detection using enhanced mid-level semantic
Multimedia Tools and Applications
A novel video salient object extraction method based on visual attention
Image Communication
A novel H.264 rate control algorithm with consideration of visual attention
Multimedia Tools and Applications
Spatiotemporal saliency detection and salient region determination for H.264 videos
Journal of Visual Communication and Image Representation
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Global motion estimation is a powerful tool widely used in video processing and compression as well as in computer vision areas. We propose a new approach for estimating global motions from coarsely sampled motion vector fields. The proposed method minimizes the fitting error between the input motion vectors and the motion vectors generated from the estimated motion model using the Newton-Raphson method with outlier rejections. Applications of the proposed method in video coding include fast global motion estimation for MPEG-4 Advanced Simple Profile coding, MPEG-2 to MPEG-4 ASP transcoding, and error concealments. Simulation results and analyses are provided for the proposed method and the applications, which show the effectiveness of the method in terms of accuracy, robustness, and speed.