The aim of the current research is concentrated on the synthesis of the different nanoparticles such as SnO2 </...

It has now been 20 years since the seminal work by Finlayson et al. on the use of spectral sharpening of sensors to achieve diagonal color constancy. Spectral sharpening is still used today by numerous researchers for different goals unrelated to the original goal of diagonal color constancy e.g., multispectral processing, shadow removal, location of unique hues. This paper reviews the idea of ...

The decorrelation stretch is a process that is used to enhance (stretch) the color differences found in a color image. The method used to do this includes the removal of the inter-channel correlation found in the input pixels; hence, the term "decorrelation stretch". The purpose of this document is to explain: 1) the conditions that normally appear in multispectral data that indicate that color...

In this paper a novel approach to the problem of impulsive noise reduction in color images based on the nonparametric density estimation is presented. The basic idea behind the new image filtering technique is the maximization of the similarities between pixels in apredefined filtering window. The new method is faster than the standard vector median filter (VMF) and preserves better edges and f...

Recently we presented an algorithm for image noise removal that uses user input and combines frequency and spatial domain information for fast removal of scratch and wire type noise. Wires are used in SFX movies and later removed in post production. In this paper we extend our previous algorithm to handle the difficult cases of shaded images, color images and movie sequences. In this way we sol...

In this paper, we present a new method for removing texture in color images using a smoothing rotating filter. From this filter, a bank of smoothed images provides pixel signals for each channel image able to classify a pixel belonging to a texture region. We apply this classification in each channel image in order to compute two directions for the anisotropic diffusion. Then, we introduce a ne...

In this paper, we propose a noise filtering scheme, which is based on a multichannel homomorphic transformation, for color photographic images corrupted by signal–dependent film grain noise. The proposed method performs the estimation of the noise parameter using the higher–order statistics (skewness or kurtosis) of the corrupted image and the filtered image statistics. This parameter estimatio...

P L p s fi v p v bstract. In this article, we present a fast switching filter for impulive noise removal from color images. The filter exploits the hue, aturation, and lightness color space and is based on the peer roup concept, which allows for the fast detection of noise in a eighborhood without resorting to pairwise distance computations etween each pixel. Experiments on large set of diverse...