# Anisotropic Diffusion Filter - Source Code
**URL:** https://discourse.itk.org/t/anisotropic-diffusion-filter-source-code/2731
**Category:** Beginner Questions
**Tags:** simpleitk
**Created:** [February 17, 2020, 8:42am UTC](https://discourse.itk.org/t/anisotropic-diffusion-filter-source-code/2731 "2020-02-17T08:42:32Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@michael](https://discourse.itk.org/u/michael)
#### Post date: [February 17, 2020, 8:42am UTC](https://discourse.itk.org/t/anisotropic-diffusion-filter-source-code/2731/1 "2020-02-17T08:42:32Z")
Hi there! New to ITK, so it’s possible I’m missing something obvious, but I have been searching through the documentation for the GradientAnisotropicDiffusionFilter in Simple ITK and have found the descriptions of the anisotropic diffusion function ([https://itk.org/Doxygen/html/classitk\_1\_1AnisotropicDiffusionFunction.html#abdd1b2f3a6e99c69c6f5582f3d266062](https://itk.org/Doxygen/html/classitk_1_1AnisotropicDiffusionFunction.html#abdd1b2f3a6e99c69c6f5582f3d266062)) and some code for the filter itself ([https://itk.org/SimpleITKDoxygen/html/classitk\_1\_1simple\_1\_1GradientAnisotropicDiffusionImageFilter.html](https://itk.org/SimpleITKDoxygen/html/classitk_1_1simple_1_1GradientAnisotropicDiffusionImageFilter.html)), but I can’t seem to find the code where I can review the math being done. Could someone point me to it?
---
### Author:  [@dzenanz](https://discourse.itk.org/u/dzenanz)
#### Post date: [February 17, 2020, 3:16pm UTC](https://discourse.itk.org/t/anisotropic-diffusion-filter-source-code/2731/2 "2020-02-17T15:16:04Z")
The math should be here:
>