Restoring highly corrupted images by impulse noise using radial basis functions interpolation
This addresses the challenge of preserving details in image restoration for applications like medical imaging or photography, but it appears incremental as it builds on existing interpolation methods.
The paper tackled the problem of restoring images highly corrupted by impulse noise by proposing an algorithm based on radial basis functions interpolation, achieving better results in noise suppression and detail preservation compared to recent methods, with improvements in PSNR and SSIM metrics, especially for very high noise densities.
Preserving details in restoring images highly corrupted by impulse noise remains a challenging problem. We proposed an algorithm based on radial basis functions (RBF) interpolation which estimates the intensities of corrupted pixels by their neighbors. In this algorithm, first intensity values of noisy pixels in the corrupted image are estimated using RBFs. Next, the image is smoothed. The proposed algorithm can effectively remove the highly dense impulse noise. Experimental results show the superiority of the proposed algorithm in comparison to the recent similar methods both in noise suppression and detail preservation. Extensive simulations show better results in measure of peak signal-to-noise ratio (PSNR) and structural similarity index (SSIM), especially when the image is corrupted by very highly dense impulse noise.