A New Improved Multistage Eight Directional Median Filter
Y. Saleena, V. S. Dharun · Indian Journal of Science and Technology · 2015
Background/Objectives: To propose a new improved multistage multi directional median filtering algorithm for impulse noise removal. Methods/Statistical Analysis: Calculate standard deviation of the 5 pixels in each direction giving extra weight to the direction in which the standard deviation is smallest, the weighted median is computed and the noisy pixel is replaced with this median value then move window throughout the image and iterate the process. Findings: The experimental results show that the proposed filter can provide excellent performance of suppressing impulse noise in all situations. Improvement/Application: The paper offers a new improved multistage eight directional median filtering algorithm for impulse noise removal from digital images.Keywords: Impulse Noise, Median Filter, Multi Stage, Multistage Eight Directional Median Filters