Title :
Weighted laplacian differences based multispectral anisotropic diffusion
Author :
Prasath, V. B Surya
Author_Institution :
Dept. of Math., Univ. of Coimbra, Coimbra, Portugal
Abstract :
We study a multichannel version of nonlinear diffusion PDE which is used to restore noisy multispectral images. Weighted coupling of interchannel edges is done by utilizing fast total variation for each channel. Anisotropic intrachannel smoothing is included to denoise and preserve edges. Numerical results on noisy multispectral images show the advantage of the proposed hybrid approach.
Keywords :
geophysical image processing; image denoising; image restoration; partial differential equations; hybrid approach; nonlinear diffusion PDE; weighted Laplacian differences based multispectral anisotropic diffusion; Anisotropic magnetoresistance; Color; Image edge detection; Laplace equations; Noise measurement; PSNR; TV; Anisotropic diffusion; Coupled PDE; Image denoising; Multispectral images; Total variation;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2011 IEEE International
Conference_Location :
Vancouver, BC
Print_ISBN :
978-1-4577-1003-2
DOI :
10.1109/IGARSS.2011.6050119
