Non-Photorealistic Sharpening and Binarization of Images by Reversed Unsharp-Masking
Tao Wang, Kohei Inoue, Kiichi Urahama · The Journal of The Institute of Image Information and Television Engineers · 2011
We present a reversed unsharp masking technique for sharpening images by producing hue halos around edges. This technique is used to binarize images. In the reversed unsharp masking, a detailed component in the usual unsharp masking is reversed and added to a base component. Images sharpened with this masking are then thresholded to generate non-photorealistic binary images.