In this paper, multichannel image "ltering using local gradient information is studied and evaluated which is simpler and more appropriate than the traditional approaches that have been addressed by means of groupwise vector ordering information. Two adaptive weighted multichannel "lters based on local gradient information to noise removal in color images are introduced. The "rst proposed multi...

A Median filter is used for eliminating Salt & Pepper Impulse noise and Wiener filter is used for eliminating Gaussian noise. This paper presents a hybrid filter for removal of both types of noises. Two Hybrid filters are presented for eliminating Salt and Pepper noise and Gaussian noise simultaneously from a noisy image. The first filter is a combination of a variant of Median filter and Wiene...

Image enhancement is the process of applying certain alterations to an input image so that the resulting image is greater to the first image for an individual application or set of determinations. This paper presents an analysis of various enhancement procedures and noise removal techniques for improving the contrast and visibility of images. There are various types of noises as discussed in th...

This paper describes a new fast, iterative algorithm for interactive image noise removal. Given the locations of noisy pixels and a prototype image, the noisy pixels are to be restored in a natural way. Most existing image noise removal algorithms use either frequency domain information (e.g low pass filtering) or spatial domain information (e.g median filtering or stochastic texture generation...

Noise removal or noise suppression is an important task in image processing. In general, the results of the noise removal have a strong influence on the quality of the following image processing techniques. Several techniques for noise removal are well established in gray value image processing. However, it is not easy to adapt these techniques to color image processing. The median filter is of...

Many computer vision algorithms which are not robust to noise incorporate a removal stage in their workflow avoid distortions the final result. In last decade, many filters for salt-and-pepper have been proposed. this paper, novel filter based on weighted arithmetic mean aggregation function and fuzzy mathematical morphology is The performance of proposed highly competitive when compared with o...

The removal of random noises in electrocardiogram (ECG) using adaptive noise canceller (called single-input adaptive noise canceller) without reference input is presented in this paper. Common approaches for noise cancellation require reference input that must be well-correlated with the noise part of the primary input. However, the reference input may be limited in availability and hence, resu...

in this paper, we try to find a particular combination of wavelet shrinkage and nonlinear diffusion for noise removal in dental images. we selected the wavelet diffusion and modified its automatic threshold selection by proposing new models for speckle related modulus. the laplacian mixture model and circular symmetric laplacian mixture models were evaluated and as it could be expected, the lat...