A characterization of the roots of the 3x3 median filter is given. We define the properties of local smoothness and of local roughness for the roots of the 3x3 median filter. Roots that are locally rough everywhere are binary and periodic; otherwise, unlike the 1D case, a root may be non binary or non periodic. This partially generalizes to dimension 2 the results of Brandt [1] and Tyan [2]; in...

In this new computing paradigm, named quantum computing, researchers from all over the world are taking their first steps in designing circuits for image processing, through a difficult process of knowledge transfer. This effort is Quantum Image Processing, an emerging research field pushed by powerful parallel capabilities computers. work goes direction and proposes challenging development met...

A novel median filter based on crow optimization algorithms (OMF) is suggested to reduce the random salt and pepper noise improve quality of RGB-colored gray images. The fundamental idea approach that first, algorithm detects pixels, replacing them with an optimum value depending a criterion maximization fitness function. Finally, standard measure peak signal-to-noise ratio (PSNR), Structural S...

Periodic noises are unwished and spurious signals that create repetitive pattern on images and decreased the visual quality. Firstly, this paper investigates various methods for reducing the effects of the periodic noise in digital images. Then an adaptive optimum notch filter is proposed. In the proposed method, the regions of noise frequencies are determined by analyzing the spectral of noisy...