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2 May 2006 Electronic image stabilization based on the spatial intensity gradient
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The presence of parasitic jitter in video sequences can degrade imaging system performance. Image stabilization systems correct for this jitter by estimating motion and then compensating for undesirable movements. These systems often require tradeoffs between stabilization performance and factors such as system size and computational complexity. This paper describes the theory and operation of an electronic image stabilization technique that provides sub-pixel accuracy while operating at real-time video frame rates. This technique performs an iterative search on the spatial intensity gradients of video frames to estimate and refine motion parameters. Then an intelligent segmentation approach separates desired motion from undesired motion and applies the appropriate compensation. This computationally efficient approach has been implemented in the existing hardware of compact infrared imagers. It is designed for use as both a standalone stabilization module and as a part of more complex electro-mechanical stabilization systems. For completeness, a detailed comparison of theoretical response characteristics with actual performance is also presented.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Douglas R. Droege "Electronic image stabilization based on the spatial intensity gradient", Proc. SPIE 6238, Acquisition, Tracking, and Pointing XX, 62380D (2 May 2006);

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