A fast algorithm for subpixel accuracy image stabilization for digital film and video
Author
Eroğlu, Çiğdem
Erdem, A. T.
Date
1998Source Title
Proceedings of SPIE Vol. 3309, Visual Communications and Image Processing'98
Print ISSN
0277-786X
Publisher
SPIE
Volume
3309
Pages
786 - 797
Language
English
Type
Conference PaperItem Usage Stats
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Abstract
This paper introduces a novel method for subpixel accuracy stabilization of unsteady digital films and video sequences. The proposed method offers a near-closed-form solution to the estimation of the global subpixel displacement between two frames, that causes the misregistration of them. The criterion function used is the mean-squared error over the displaced frames, in which image intensities at subpixel locations are evaluated using bilinear interpolation. The proposed algorithm is both faster and more accurate than the search-based solutions found in the literature. Experimental results demonstrate the superiority of the proposed method to the spatio-temporal differentiation and surface fitting algorithms, as well. Furthermore, the proposed algorithm is designed so that it is insensitive to frame-to-frame intensity variations. It is also possible to estimate any affine motion between two frames by applying the proposed algorithm on three non-collinear points in the unsteady frame.
Keywords
Image registrationMotion estimation
Unsteadiness correction
Algorithms
Error analysis
Motion compensation
Video signal processing
Digital films
Image stabilization
Image analysis