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Increasing the image resolution using multi-windows spline-type spaces
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DOI：10.1016/j.sigpro.2013.11.010.png)
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Abstract
En 中文
The aim of this paper is to introduce a computational efficient method to increase the resolution of an image together with an automatic registration with subpixel accuracy. The algorithm makes use of a priori knowledge of the offsets for a set of digital images and the fast computation of the duals in spline-type spaces with multiple generators. These spaces are obtained by applying a discrete group of translation operators to a finite set of smooth functions, forming a Riesz basis for its closed linear span within the Hilbert space L-2(R-2). Experiments on synthetic and astronomical optical images are presented. (C) 2013 Elsevier B.V. All rights reserved.
Keywords:
Higher resolution
Registration
Multi-windows spline-type spaces
Projection operator
Gramian
Riesz basis
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