Double Hierarchical Algorithm for Video Mosaics
PCM '01 Proceedings of the Second IEEE Pacific Rim Conference on Multimedia: Advances in Multimedia Information Processing
Fast and Robust Sprite Generation for MPEG-4 Video Coding
PCM '01 Proceedings of the Second IEEE Pacific Rim Conference on Multimedia: Advances in Multimedia Information Processing
A Robust, Efficient, and Fast Global Motion Estimation Method from MPEG Compressed Video
PCM '02 Proceedings of the Third IEEE Pacific Rim Conference on Multimedia: Advances in Multimedia Information Processing
The Angular Difference Function and Its Application to Image Registration
IEEE Transactions on Pattern Analysis and Machine Intelligence
Fusion-based multiview distributed video coding
Proceedings of the 4th ACM international workshop on Video surveillance and sensor networks
Efficient local transformation estimation using Lie operators
Information Sciences: an International Journal
Complexity accuracy tradeoffs of Lie operators in motion estimation
Pattern Recognition Letters
A projection-based extension to phase correlation image alignment
Signal Processing
Trajectory based event tactics analysis in broadcast sports video
Proceedings of the 15th international conference on Multimedia
Global parametric image alignment via high-order approximation
Computer Vision and Image Understanding
Combination of accumulated motion and color segmentation for human activity analysis
Journal on Image and Video Processing - Anthropocentric Video Analysis: Tools and Applications
Event tactic analysis based on player and ball trajectory in broadcast video
CIVR '08 Proceedings of the 2008 international conference on Content-based image and video retrieval
Fast and accurate global motion estimation algorithm using pixel subsampling
Information Sciences: an International Journal
Analysis and Hardware Architecture Design of Global Motion Estimation
Journal of Signal Processing Systems
A generic virtual content insertion system based on visual attention analysis
MM '08 Proceedings of the 16th ACM international conference on Multimedia
Human activity localization via sequential change detection
MIR '08 Proceedings of the 1st ACM international conference on Multimedia information retrieval
SETh system spatio-temporal object tracking using combined color and motion features
ROCOM'09 Proceedings of the 9th WSEAS international conference on Robotics, control and manufacturing technology
Iterative multiview side information for enhanced reconstruction in distributed video coding
Journal on Image and Video Processing - Special issue on distributed video coding
Event tactic analysis based on broadcast sports video
IEEE Transactions on Multimedia
Visual algorithms for post production
ACM SIGGRAPH 2009 Courses
Robust Estimation of Camera Motion Using Optical Flow Models
ISVC '09 Proceedings of the 5th International Symposium on Advances in Visual Computing: Part I
A Hierarchical Semantics-Matching Approach for Sports Video Annotation
PCM '09 Proceedings of the 10th Pacific Rim Conference on Multimedia: Advances in Multimedia Information Processing
High-resolution multi-sprite generation for background sprite coding
ACIVS'07 Proceedings of the 9th international conference on Advanced concepts for intelligent vision systems
A semantic framework for video genre classification and event analysis
Image Communication
Automatic MPEG-4 sprite coding--Comparison of integrated object segmentation algorithms
Multimedia Tools and Applications
OTS and central expanding blocks scan for interframe compression
ACS'10 Proceedings of the 10th WSEAS international conference on Applied computer science
Automatic, robust global motion estimation using clustering
Image Communication
Rigid registration of renal perfusion images using a neurobiology-based visual saliency model
Journal on Image and Video Processing
Precise and accurate decimal number recognition using Global Motion Estimation
International Journal of Artificial Intelligence and Soft Computing
Global motion estimation: feature-based, featureless, or both ?!
ICIAR'06 Proceedings of the Third international conference on Image Analysis and Recognition - Volume Part I
A global-motion analysis method via rough-set-based video pre-classification
RSFDGrC'05 Proceedings of the 10th international conference on Rough Sets, Fuzzy Sets, Data Mining, and Granular Computing - Volume Part II
Camera motion detection in video sequences using motion cooccurrences
PCM'05 Proceedings of the 6th Pacific-Rim conference on Advances in Multimedia Information Processing - Volume Part I
Motion-information-based video retrieval system using rough pre-classification
Transactions on Rough Sets V
Sprite generation using sprite fusion
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
Feature based image registration using non-degenerate pixels
Signal Processing
Synthetic Video Generation for Evaluation of Sprite Generation
International Journal of Multimedia Data Engineering & Management
Optimized hierarchical block matching for fast and accurate image registration
Image Communication
Hi-index | 0.01 |
In this paper, we propose an efficient, robust, and fast method for the estimation of global motion from image sequences. The method is generic in that it can accommodate various global motion models, from a simple translation to an eight-parameter perspective model. The algorithm is hierarchical and consists of three stages. In the first stage, a low-pass image pyramid is built. Then, an initial translation is estimated with full-pixel precision at the top of the pyramid using a modified n-step search matching. In the third stage, a gradient descent is executed at each level of the pyramid starting from the initial translation at the coarsest level. Due to the coarse initial estimation and the hierarchical implementation, the method is very fast. To increase robustness to outliers, we replace the usual formulation based on a quadratic error criterion with a truncated quadratic function. We have applied the algorithm to various test sequences within an MPEG-4 coding system. From the experimental results we conclude that global motion estimation provides significant performance gains for video material with camera zoom and/or pan. The gains result from a reduced prediction error and a more compact representation of motion. We also conclude that the robust error criterion can introduce additional performance gains without increasing computational complexity