The Nagao filtering


I’m a real beginner in programming graphical applications with OpenGL.
For one of my new application, I need the Nagao algorithm.
Is there anybody here who could help me by sending me the source code (in C language) ?

Thank you very much

what is the nagao algorithm ? what is its aim ?

hm, i don’t know either, but it sounds like a image filtering method, such as laplace-filtering or gauss.
i tried google for “nagao filtering”, and found 2 things: one about signal noise filtering and another about edge-preserving filters.
perhaps someone else knows more…


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