Author_Institution :
Fac. of Sci. & Technol., Assumption Univ. (AU), Bangkok, Thailand
Abstract :
Due to noise contamination on the image during the observation process, digital image reconstruction is an essential in terms of recovering the information of the contents (e.g. document and image) and utilized in many applications such as digital image forensic, medical image processing, machine vision, and etc. Therefore, this paper is concerned with the performance comparisons of single image employing various reconstruction approaches. These are Inverse filter, Wiener filter, Regularized technique, Lucy-Richardson technique, and Bayesian technique based on median, mean, myriad, and meridian filters. The experiments test on the three standard pictures (Lena, Resolution chart, and Susie (40th)) under the same noise conditions. Four types of noise models consider in this paper are AWGN, Poisson, Salt&Pepper, and Speckle noises. The performance of evaluations is done by varying parameters of individual technique. Peak-signal-to-noise-ratio (PSNR) is a key indicator on the performance comparison results.
Keywords :
AWGN; Bayes methods; Wiener filters; image enhancement; image reconstruction; median filters; AWGN model; Bayesian technique; Lucy-Richardson technique; Poisson model; Wiener filter; digital image reconstruction; image noise contamination; inverse filter; key indicator; mean filter; median filter; meridian filter; myriad filter; noise model; peak-signal-to-noise-ratio; performance comparison; regularized technique; salt-pepper model; several noisy environment; single image reconstruction technique; speckle noises model; Bayesian methods; Degradation; Image reconstruction; Image restoration; PSNR; Wiener filter; Digital Image Enhancement; Digital Image Processing; Digital Image Reconstruction;