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Multiframe Super-Resolution Reconstruction of Small Moving Objects

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3 Author(s)
van Eekeren, A.W.M. ; Electro Opt. group, TNO Defence, Security & Safety, The Hague, Netherlands ; Schutte, K. ; Van Vliet, L.J.

Multiframe super-resolution (SR) reconstruction of small moving objects against a cluttered background is difficult for two reasons: a small object consists completely of “mixed” boundary pixels and the background contribution changes from frame-to-frame. We present a solution to this problem that greatly improves recognition of small moving objects under the assumption of a simple linear motion model in the real-world. The presented method not only explicitly models the image acquisition system, but also the space-time variant fore- and background contributions to the “mixed” pixels. The latter is due to a changing local background as a result of the apparent motion. The method simultaneously estimates a subpixel precise polygon boundary as well as a high-resolution (HR) intensity description of a small moving object subject to a modified total variation constraint. Experiments on simulated and real-world data show excellent performance of the proposed multiframe SR reconstruction method.

Published in:

Image Processing, IEEE Transactions on  (Volume:19 ,  Issue: 11 )