Gibbs artifact reduction for POCS super-resolution image reconstruction |
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Authors: | Chuangbai XIAO Jing YU Kaina SU |
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Affiliation: | (1) College of Computer Science and Technology, Beijing University of Technology, Beijing, 100022, China |
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Abstract: | The topic of super-resolution image reconstruction has recently received considerable attention among the research community.
Super-resolution image reconstruction methods attempt to create a single high-resolution image from a number of low-resolution
images (or a video sequence). The method of projections onto convex sets (POCS) for super-resolution image reconstruction
attracts many researchers’ attention. In this paper, we propose an improvement to reduce the amount of Gibbs artifacts presenting
on the edges of the high-resolution image reconstructed by the POCS method. The proposed method weights the blur PSF centered
at an edge pixel with an exponential function, and consequently decreases the coefficients of the PSF in the direction orthogonal
to the edge. Experiment results show that the modification reduces effectively the visibility of Gibbs artifacts on edges
and improves obviously the quality of the reconstructed high-resolution image. |
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Keywords: | super-resolution image reconstruction the POCS method edge detection Gibbs artifacts |
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