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A Novel Algorithm for Impulse Noise Removal and Edge Detection

International Journal of Computer Applications
© 2012 by IJCA Journal
Volume 38 - Number 7
Year of Publication: 2012
Akansha Mehrotra
Krishna Kant Singh

Akansha Mehrotra, Krishna Kant Singh and M.J.Nigam. Article: A Novel Algorithm for Impulse Noise Removal and Edge Detection. International Journal of Computer Applications 38(7):30-34, January 2012. Full text available. BibTeX

	author = {Akansha Mehrotra and Krishna Kant Singh and M.J.Nigam},
	title = {Article: A Novel Algorithm for Impulse Noise Removal and Edge Detection},
	journal = {International Journal of Computer Applications},
	year = {2012},
	volume = {38},
	number = {7},
	pages = {30-34},
	month = {January},
	note = {Full text available}


Edge detection of images is an important task in computer vision and image processing. Edge detection of noise free images is relatively simpler, but in most practical cases the images are degraded by noise. To find the edges from noisy images is a challenging task. This paper proposes a novel edge detection algorithm for images corrupted with noise. The algorithm finds the edges by eliminating the noise from the image so that the correct edges are determined. For making the image noise free the algorithm calculates closeness parameters, based on this parameter the noisy pixel is replaced by the most appropriate value. The edges of the noise free image are determined using morphological operators erosion and dilation. The proposed algorithm uses a combination of these operators to find the edges. This algorithm uses two different types of structuring elements so that all the edges of the image are determined efficiently.


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