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| Conference/Proceedings | IEEE Int. Conf. on Image Processing (ICIP\'06) |
| Start date | 08.10.2006 |
| End date | 11.10.2006 |
| Address | Atlanta, GA, USA |
| Author(s) | Andreas Krutz, Michael Frater, Matthias Kunter, Thomas Sikora |
| Title | Windowed Image Registration for Robust Mosaicing of Scenes with Large Background Occlusions |
| Abstract | We propose an enhanced window-based approach to local image registration for robust video mosaicing in scenes with arbitrarily moving foreground objects. Unlike other approaches, we estimate accurately the image transformation without any pre-segmentation even if large background regions are occluded. We apply a windowed hierarchical frame-to-frame registration based on image pyramid decomposition. In the lowest resolution level phase correlation for initial parameter estimation is used while in the next levels robust Newton-based energy minimization of the compensated image mean-squared error is conducted. To overcome the degradation error caused by spatial image interpolation due to the warping process, i.e. aliasing effects from under-sampling, final pixel values are assigned in an up-sampled image domain using a Daubechies bi-orthogonal synthesis filter. Experimental results show the excellent performance of the method compared to recently published methods. The image registration is sufficiently accurate to allow open-loop parameter accumulation for long-term motion estimation. |
| Key words | Image Registration, Global Motion Estimation, Mosaicing |
| Note | M. Frater: University of New South Wales, Canberra, Australia |
| File | 0995Krutz2006.pdf |
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