Automatic sightline stabilisation in noisy imagery
MUSP'07 Proceedings of the 7th WSEAS International Conference on Multimedia Systems & Signal Processing
Anytime similarity measures for faster alignment
Computer Vision and Image Understanding
Differential Evolution as a viable tool for satellite image registration
Applied Soft Computing
Multisource data registration based on NURBS description of contours
International Journal of Remote Sensing
Non-Iterative Hierarchical Registration for Medical Images
Journal of Signal Processing Systems
Fast image alignment using anytime algorithms
IJCAI'07 Proceedings of the 20th international joint conference on Artifical intelligence
Digital Image Processing in Remote Sensing
SIBGRAPI-TUTORIALS '09 Proceedings of the 2009 Tutorials of the XXII Brazilian Symposium on Computer Graphics and Image Processing
Mesh Topological Optimization for Improving Piecewise-Linear Image Registration
Journal of Mathematical Imaging and Vision
Three-dimensional object registration using the wavelet transform
Proceedings of the 24th Spring Conference on Computer Graphics
ISVC'11 Proceedings of the 7th international conference on Advances in visual computing - Volume Part II
IPMI'05 Proceedings of the 19th international conference on Information Processing in Medical Imaging
Robust optimization using disturbance for image registration
WBIR'06 Proceedings of the Third international conference on Biomedical Image Registration
A comparison of similarity measures for 2d rigid MR image registration using wavelet transform
PSIVT'06 Proceedings of the First Pacific Rim conference on Advances in Image and Video Technology
A parallel mutual information based image registration algorithm for applications in remote sensing
ISPA'06 Proceedings of the 4th international conference on Parallel and Distributed Processing and Applications
Hierarchical vs. simultaneous multiresolution strategies for nonrigid image registration
WBIR'12 Proceedings of the 5th international conference on Biomedical Image Registration
Registration of infrared and visible images based on improved SIFT
Proceedings of the 4th International Conference on Internet Multimedia Computing and Service
International Journal of Computational Vision and Robotics
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Image registration is the process by which we determine a transformation that provides the most accurate match between two images. The search for the matching transformation can be automated with the use of a suitable metric, but it can be very time-consuming and tedious. We introduce a registration algorithm that combines a simple yet powerful search strategy based on a stochastic gradient with two similarity measures, correlation and mutual information, together with a wavelet-based multiresolution pyramid. We limit our study to pairs of images, which are misaligned by rotation and/or translation, and present two main results. First, we demonstrate that, in our application, mutual information may be better suited for sub-pixel registration as it produces consistently sharper optimum peaks than correlation. Then, we show that the stochastic gradient search combined with either measure produces accurate results when applied to synthetic data, as well as to multitemporal or multisensor collections of satellite data. Mutual information is generally found to optimize with one-third the number of iterations required by correlation. Results also show that a multiresolution implementation of the algorithm yields significant improvements in terms of both speed and robustness over a single-resolution implementation.