Comparison of LULU and Median Filter for Image Denoising

• Main Authors: Rahmat, Roushanak, Malik , Aamir Saeed, Kamel , Nidal
• Format: Conference or Workshop Item
• Published: 2011
• Subjects: TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://eprints.utp.edu.my/4455/1/2011_ICSAP-Roushanak.pdf; http://eprints.utp.edu.my/4455/
• Institution: Universiti Teknologi Petronas

This paper presents a comparison between LULU and Median filters for impulse noise in images. Noise removal from images is always a challenging area of research. Different methods are being used for different image noises such as Wiener filter for Gaussian noise, Frost filter for speckle noise and median filter for impulse noise. LULU filters are widely being used for impulse noise too. LULU filters are nonlinear rank selector operators which are computationally more competent and the performance of the operator is straightforward to describe. The comparison between Median and LULU filters, in this paper, is performed using two different image quality metrics which are RMSE and PSNR.