  This paper introduces a new approach to non-local means image denoising.
Instead of using all pixels located in the search window for estimating the
value of a pixel, we identify the highly corrupted pixels and assign less
weight to these pixels. This method is called robust non-local means. Numerical
and subjective evaluations using ultrasound images show good performances of
the proposed denoising method in recovering the shape of edges and important
detailed components, in comparison to traditional ultrasound image denoising
methods
