Image De-noising Techniques: a Review Paper

A critical issue in the image restoration is the problem of de-noising images while keeping the integrity of relevant image information. A large number of image denoising techniques are proposed to remove noise. Mainly these techniques are depends upon the type of noise present in images. So image de-noising still remains a important challenge for researchers because de-noising techniques remove noise from images but also introduce some artifacts and cause blurring. In this paper we discuss about various image de-noising and their features. Some of these techniques provide satisfactory results in noise removal and also preserving edges with fine details present in images.