%0 Journal Article
	%A Shujun Fu and  Qiuqi Ruan and  Wenqia Wang and  Yu Li
	%D 2007
	%J International Journal of Computer and Information Engineering
	%B World Academy of Science, Engineering and Technology
	%I Open Science Index 2, 2007
	%T Feature Preserving Nonlinear Diffusion for Ultrasonic Image Denoising and Edge Enhancement 
	%U https://publications.waset.org/pdf/15953
	%V 2
	%X Utilizing echoic intension and distribution from different organs and local details of human body, ultrasonic image can catch important medical pathological changes, which unfortunately may be affected by ultrasonic speckle noise. A feature preserving ultrasonic image denoising and edge enhancement scheme is put forth, which includes two terms: anisotropic diffusion and edge enhancement, controlled by the optimum smoothing time. In this scheme, the anisotropic diffusion is governed by the local coordinate transformation and the first and the second order normal derivatives of the image, while the edge enhancement is done by the hyperbolic tangent function. Experiments on real ultrasonic images indicate effective preservation of edges, local details and ultrasonic echoic bright strips on denoising by our scheme.

	%P 449 - 452