JPR_V3_N3_RP5 Apoorwa Tiwari Devanand Bhonsle Journal on Pattern Recognition 2350-112X 3 3 24 31 Gaussian Noise, Salt and Pepper Noise, Trim Median Filter, Noise Estimation In this paper, the authors have proposed a novel approach for noise estimation and reduction from a degraded image. The algorithm is designed using modified decision based trim median filter. This method helps to estimate the actual salt and pepper noise in any degraded image. They have also calculated the presence of Gaussian noise in some noisy images. In this paper, two filters were used; one is trim median filter used for estimation and removal of noise from the image corrupted with Salt and Pepper noise and the other is Gaussian filter which is used for Gaussian noise estimation and reduction. This is a better algorithm because it is based on a modified decision based system. GUI model has been used for this system which helps us to control and estimate the above mentioned noises in an image. September - November 2016 Copyright © 2016 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=12408