Periodic noise corrupts digital images during acquisition and transmission stages by adding
repetitive patterns. This study introduces a new adaptive Gaussian notch filter (AGNF) in …

Digital x-ray detectors are now the detector of choice in many X-ray examinations. They
have been accepted into clinical practice over the past decade but there are still ongoing …

Restoration of images corrupted with periodic noise is a fundamental task in digital image
processing since periodic noise affects all imaging processes. The paper presents an …

This paper presents a windowed adaptive switching minimum filter in frequency domain to
restore images corrupted by periodic noise. Periodic noise frequencies that spread …

In many biomedical imaging applications Flat Panel Imagers (FPIs) are currently the most
common option. However, FPIs possess several key drawbacks such as large pixels, high …

The Large Area Sensor (LAS) is a 1350 times1350 array of active pixels on a 40 Im pitch
fabricated in a 0.35 im CMOS process. Stitching technology is employed to achieve an area …

Recently CMOS active pixels sensors (APSs) have become a valuable alternative to
amorphous silicon and selenium flat panel imagers (FPIs) in bio-medical imaging …

This paper presents a new Laplacian-based frequency domain filter for the effective
restoration of images corrupted by periodic noise. In the noise detection phase of the …

Image denoising is a challenging task in the recent research field of image processing.
During image acquisition, periodic and quasi-periodic noise perturbs the image signal …

Well-organized restoration techniques for attenuating the impact of periodic/quasi-periodic
noise structures from digital images is one of the significant research fields in modern days …