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09 Sep 2013 Hessian based Frangi Vesselness filter Enhancement of Vessel/ridge like structures in 2D/3D image using hessian eigen values Author: Dirk-Jan Kroon

hello, i am working on a 2D cardiac images and i used frangie filter to highlight the vessels, but i have problems in images containing narrow vessel, and i am not sure that i effectively enhance the contrast of the images before using frangie filter,can i have any help about improving the contrast of images,i have to mention that i tried the contrast stretching, histogram equalization, adaptive histogram equalization.

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