Comparative study of noise and digital filters for image processing

Filtering is most important and critical task to immaculate information like edge detection, object identification, brightness, contrast etc. from the noisy image. Various types of noises are due to faulty instrument, temperate rise of camera and some time added intentionally to preserve other useful information of the image and also depends on its transmission over various media like space to earth through vacuum media and Sea to earth station through water media etc. In this paper we presented essential used noises and filtering techniques and simulated in matlab. We discussed the noise effects and its corresponding filters. We also simulated and discussed best suitable filter to various type of noise and its results on standard image in matlab.