Many prior face anti-spoofing works develop discriminative models for recognizing the
subtle differences between live and spoof faces. Those approaches often regard the image …

In this letter, we propose a new adaptive weighted mean filter (AWMF) for detecting and
removing high level of salt-and-pepper noise. For each pixel, we firstly determine the …

An image degraded by noise is a common phenomenon. In this letter, we propose a novel
adaptive fuzzy switching weighted mean filter to remove salt-and-pepper (SAP) noise. The …

Noise reduction is a paramount preliminary step in many computer vision applications in
which the presence of undesired noise can distort the results. Lately, the removal of high …

Noise is inevitably common in digital images, leading to visual image deterioration.
Therefore, a suitable filtering method is required to lessen the noise while preserving the …

In this paper, a non-iterative adaptive median filter is proposed for denoising images
contaminated with impulse noise. The proposed denoising scheme operates in two steps …

In this paper, we suggest a general model for the fixed-valued impulse noise and propose a
two-stage method for high density noise suppression while preserving the image details. In …

A new probabilistic decision based filter (PDBF) is presented to remove salt and pepper
impulse noise in highly corrupted images. The filter employs two types of estimation …

An improved quaternion switching filter for colour image denoising is presented. It proposes
a RGB colour image as a pure quaternion form and measures differences between two …

Impulse noise still poses challenges in front of researchers today. The removal of impulse
noise brings blurring which leads to edges being distorted and image thus being of poor …