Title :
Study on nonlocal morphological operators
Author :
Salembier, Philippe
Author_Institution :
Signal Theor. & Commun. Dept., Tech. Univ. of Catalonia, Barcelona, Spain
Abstract :
This paper studies nonlocal morphological operators. Following the strategy proposed for the Nonlocal means filter, these operators are based on a local and adaptive definition of the structuring element which is specified by searching for patches in the image that are similar to the one surrounding the pixel being filtered. After presenting the basic nonlocal morphological operators using generic structuring elements, we study their robustness in the presence of noise. Then, we illustrate the interest of some nonlocal morphological operators using flat structuring elements for denoising.
Keywords :
filtering theory; image denoising; mathematical morphology; flat structuring elements; image denoising; image patches; nonlocal means filter; nonlocal morphological operators; structuring element; Adaptive filters; Filtering; Morphology; Noise cancellation; Noise level; Noise reduction; Noise robustness; Nonlinear filters; Pixel; Signal processing; Adaptive structuring element; Nonlocal mathematical morphology; Nonlocal means;
Conference_Titel :
Image Processing (ICIP), 2009 16th IEEE International Conference on
Conference_Location :
Cairo
Print_ISBN :
978-1-4244-5653-6
Electronic_ISBN :
1522-4880
DOI :
10.1109/ICIP.2009.5414374
