نتایج جستجو برای: color removal

تعداد نتایج: 261003  

Afshin Ebrahimi, Fazel Mohammadi-Moghaddam, Hmid Reza Tashauoei, Hossain Ataeifar, Mokhtar Mahdavi, Yaghob Hajizadeh,

Background & Aims of the Study: In some situation like rainfall seasons raw water become very turbid so it affected the water treatment plant processes and quality of produced water. Treatment of very high turbid water has some concerns like precursors for disinfection by-products and very loading rate of particle on filter's media and consequently increases in water consumptio...

In the present study the treatment efficiency of O3 and UV+O3 processes were compared for the oxidation of simulated dyebath effluent containing a mixture of a reactive dye (C.I. Reactive Blue 19) and various dye auxiliary chemicals. The color, COD and TOC removal rates were assessed for different processes. The effect of initial dye concentration and presence of sodium hydroxide and sodium car...

2013
Wang Jianwei

An algorithm of the color image noise removal algorithm is put forward based on the pixel operations. The idea of the algorithm is to read every pixel in a set order and determine whether the pixel level is consistent with the probability density function of impulse noise or not. If it is similar to noise pixel, the number of impulse noise in a certain mask is counted. If the number is less tha...

2004
Bogdan Smolka

In this paper the problem of nonparametric impulsive noise removal in multichannel images is addressed. The proposed filter class is based on the nonparametric estimation of the density probability function in a sliding filter window. The obtained results show good noise removal capabilities and excellent structure preserving properties of the new impulsive noise reduction technique.

2017
Bogdan Smolka

In this paper a novel adaptive filtering scheme for impulsive noise removal in color images is presented. The noise detection algorithm is based on the concept of aggregated distances assigned to the pixels belonging to the filtering window. The value of the difference between the accumulated distance assigned to the central sample and to the pixel with the lowest rank serves as an indicator of...

1993
Shree K. Nayar Xi-Sheng Fang Terrance E. Boult

Specular reflections and interreflections produce strong highlights in brightness images. These highlights can cause vision algorithms, such as, segmentation, shape from shading, binocular stereo, and motion detection to produce erroneous results. We present an algorithm for separating the specular and d i f i s e components of reflection from images. The method iises color and polarization, si...

2015
R. Ranjani

Color blindness deficiency is the inability or decreased ability to see the color, under normal lighting conditions. There is no actual blindness but there is a deficiency of color vision. Color blindness is of many types like Red-Green, Blue-Yellow etc.., In this paper we proposed a new method that the users used the histogram thresholding to create a green colour mask which when they applied ...

Elham Keshmirizadeh R. Khosravi

This study investigated the efficiency of electerocoagulation (EC) in removing color from synthetic and simulated textile wastewater. The study on decolorization of mixed dyes is a step toward an effective treatment of textile wastewater. Two representative reactive dye molecules were selected for the synthetic dye wastewater, a blue dye alone and mixed dye (black, blue, red, 1:1:1v/v). The EC ...

Mohamad Reza Eskandarian Mohammad Hasan Rasoulifard Motreaz Vahedpour Neamat Mohammadlou

The removal of color from synthetic wastewater containing Congo red was experimentally investigated using electrocoagulation process. The effects of operational parameters such as current density, electrolysis time, electrolyte concentration, electrode distance, initial dye concentration, initial pH and temperature on color removal efficiency were investigated in this study. The tentative resul...

Abdalmajid Fadaei Bahador Neamati Nezamaddin Mengelizadeh Saeid Fallahizadeh,

This work assesses the efficiency of integrated enhanced coagulation and direct filtration processes for the removal of color, turbidity, and natural organic matter (NOM) from surface water. The processes were conducted in a simulated pilot. The operating conditions of the treatment process, including pH, FeCl3 dose, and influent flow, were investigated. Following that, its efficienc...

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