نتایج جستجو برای: median filter

تعداد نتایج: 268750  

Journal: :International Journal of Intelligent Systems and Applications 2014

2016
Parineeta Suman Deepa Parasar Vijay R. Rathod

Ultrasound imaging is one of the popular,cheapest, and noninvasive medical scans. During the time of image acquisition, there is distortion of the quality of image in the form of speckle noise. Nowadays, many researches have made various experiments to improve the quality of medical image.In this paper, comparing fuzzy filter with median filter, as fuzzy filter works on fuzzy rules to detect di...

2016
Sarita Gupta Saurabh Gupta Adib Akl Charles Yaacoub Kamal Tabbara Lal Chandra Puja Lal Raju Gupta Arun Tayal Dinesh Ved Prakash

Images are a crucial part of everyone’s life in this modern world. The increase in the number of these has led to a need of better results like better quality, better diagnosis of medical problems etc. Reducing noise from the images is a challenge for the researchers in digital image processing. Several approaches are there for noise reduction. Generally speckle noise is commonly found in the s...

2005
Samuel Morillas Valentín Gregori Guillermo Peris-Fajarnés Pedro Latorre Carmona

Vector median filtering is a well known technique for reducing noise in color images. These filters are defined on the basis of a suitable distance or similarity measure, being the most common used the Euclidean and City-Block distances. In this paper, a Fuzzy Metric, in the sense of George and Veeramani (1994), is defined and applied to color image filtering by means of a new Vector Median Fil...

2002
Hirokazu Yagou Alexander G. Belyaev D. Weiz

In this paper, we introduce a new mesh filtering method: a mesh median filter. This is an application of the median filter to smoothen 3-D noisy shapes given by triangle meshes. An algorithm of the mesh median filter is realized by applying the median filter to face normals on triangle meshes and updating mesh vertex positions to make them fit to the filtered normals. As an advanced modificatio...

Journal: :Journal of Multimedia 2013
Zhen Chen Jihong Shen Peter Roth

Based on dark channel priority, the paper proposes an improved defogging algorithm of single image which can defog the foggy images rapidly. The algorithm in the paper applies the method combining adaptive median filter and bilateral filter to figure out clear dark channel on the edge. And the algorithm is based on the physical model of foggy images to estimate transmission. Compared with the t...

Journal: :J. Electronic Imaging 2008
M. Emre Celebi Y. Alp Aslandogan

bstract. We present an order-statistics-based vector filter for the emoval of impulsive noise from color images. The filter preserves he edges and fine image details by switching between the identity no filtering) operation and the vector median filter operation based n the robust univariate median operator. Experiments on a diverse et of images and comparisons with state of the art filters sho...

2015

A new Decision based algorithm for impulse identification in color images is proposed. In vector median filter all the pixels are processed irrespective of whether it is corrupted or uncorrupted. The proposed algorithm overcomes this drawback where Vector Median is calculated only if the processing pixel is corrupted. This in turn reduces the computation time. The proposed algorithm gives bette...

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