Open AccessA Hybrid Filter with Impulse Detection for Removal of Random Valued Impulse Noise from Colour Videos
Author(s) -
S. Anusha,
Hemanth Kumar,
S. K.P. Chaitanya
Publication year - 2012
Publication title -
international journal of image processing and vision sciences
Language(s) - English
Resource type - Journals
ISSN - 2278-1110
DOI - 10.47893/ijipvs.2012.1011
Subject(s) - impulse noise , computer vision , computer science , artificial intelligence , median filter , pixel , filter (signal processing) , image restoration , bilateral filter , brightness , mathematics , image processing , image (mathematics) , optics , physics
This paper presents a three dimensional hybrid filter to remove random valued impulse noise from colour video sequences. The switching median technique is utilized to protect noise free isolated pixels from filtering so as to avoid blurring of frames. The restoration of noisy pixels is done by brightness information obtained from median filtering and chromaticity information is obtained from vector directional filtering. This hybrid filter is applied in three dimensional sliding window where spatial as well as temporal information about neighbourhood is available for restoration of frame under consideration. Only noise free pixels of three dimensional sliding window are used for restoration of frame under consideration. Simulation results show that the proposed three dimensional hybrid filter yields superior performance in comparison to other filtering methods