Abstract
High resolution image reconstruction is an image process to reconstruct a high resolution image from a set of blurred, degraded and shifted low resolution images. In this paper, the reconstruction problem is treated as a function approximation. We use linear interpolation to build up an algorithm to obtain the relationship between the detail coefficients in wavelet subbands and the set of low resolution images. We use Haar wavelet as an example and establish the connection between the Haar wavelet subband and the low resolution images. Experiments show that we can use just 3 low resolution images to obtain a high resolution image which has better quality than Tikhonov least-squares approach and Chan et al. Algorithm 3 in low noise cases. We also propose an error correction extension for our method which can lead to very good results even in noisy cases. Moreover, our approach is very simple to implement and very efficient.
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Tong, C.S., Leung, K.T. Super-resolution reconstruction based on linear interpolation of wavelet coefficients. Multidim Syst Sign Process 18, 153–171 (2007). https://doi.org/10.1007/s11045-007-0023-2
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DOI: https://doi.org/10.1007/s11045-007-0023-2