Update Readme

CMakeLists.txt

@@ -3,6 +3,8 @@ project(TotalVariation)
 
 set(TotalVariation_LIBRARIES TotalVariation)
 
+add_subdirectory(ThirdParty/proxTV)
+
 if(NOT ITK_SOURCE_DIR)
   find_package(ITK REQUIRED)
   list(APPEND CMAKE_MODULE_PATH ${ITK_CMAKE_DIR})

README.rst

@@ -16,6 +16,35 @@ ITKTotalVariation
 |CircleCI|  |TravisCI|  |AppVeyor|
 =========== =========== ===========
 
+
 TotalVariation algorithms, providing a wrap for the external project: https://github.com/albarji/proxTV
 
 ITK is an open-source, cross-platform library that provides developers with an extensive suite of software tools for image analysis. Developed through extreme programming methodologies, ITK employs leading-edge algorithms for registering and segmenting multidimensional scientific images.
+
+**Idea / Work in progress**
+
+Not ready. The motivation is that Total Variation methods from proxTV are pretty effective denoisers.
+If interested, there are python and matlab wraps available from https://github.com/albarji/proxTV .
+If using the proxTV python package and python ITK, you can interconnect them:
+
+.. code-block:: python
+
+   import itk
+   import prox_tv as ptv
+   reader = itk.ImageFileReader.New(FileName=input_filename)
+   reader.Update()
+   image = reader.GetOutput()
+   image_array = itk.GetArrayViewFromImage(image)
+   norm = 1
+   dimensions_to_penalyze = [1,2,3]
+   tv_array = ptv.tvgen(image_array, np.array([lam,lam,lam]), dimensions_to_penalyze, np.array([norm,norm,norm]))
+   tv_array = np.ascontiguousarray(tv_array, dtype=image_array.dtype)
+   modifiedImage = itk.GetImageViewFromArray(tv_array)
+   itk.ImageFileWriter.New(Input=modifiedImage, FileName=output_filename).Update()
+
+
+- [x] Add support for CMake to proxTV. Open PR: <https://github.com/albarji/proxTV/pull/38>
+      And the branch in my fork: <https://github.com/phcerdan/proxTV/tree/cmake_support>
+- [ ] Handle the external project. Choose between add_subdirectory, or ExternalProject_Add. Ask ITK.
+- [ ] Do the actual wrapping with ITK classes.
+- [ ] Profit and use TV methods in C++ with ITK.