An Improved Adaptive Smoothing Method [chapter]

Xin Hu, Hui Peng, Joseph Kesker, Xiang Cai, William G. Wee, Jing-Huei Lee
2009 Lecture Notes in Computer Science  
An improvement of the Chen's method has been provided through the calculation of a more accurate H map. The H map is the pixel's contextual inhomogeneity value reflecting its proximity position with respect to an edge feature, and a more accurate H value leads to the more accurate smoothing speed for the pixel. While experiments on 5 real images show slight improvements in SNRs of our method over that of the Chen method, edge features preserving capability has been enhanced with low FARs (false
more » ... alarm rates) for edge feature extracted from applying the Sobel filter to the image. Furthermore, parameter values have been determined through an exhaustive searching process resulting in the suggestions of h=0.4 and T=4 for practical applications where the original noise free image is not available and/or no viewer to visually make a selection of the final smoothed image as the output.
doi:10.1007/978-3-642-04146-4_81 fatcat:blvaxfsyorfhfmagb6ouegpkwe