BUG: Fix failing tests for examples

Replaced ITKIONRRD with ITKIOPNG and ITKIOMeta, because the examples were trying to build the png and mha images as nrrd, thus throwing an error.

Changed the input path to a new directory: BioCell/examples/Data which contains raw files BrainProtonDensity.png and brainweb1e1a10f20.mha used for example testing. Other remote modules contain the raw version of their data hence the use of it here.

examples/CMakeLists.txt

@@ -7,7 +7,8 @@ find_package(ITK REQUIRED
     BioCell
     ITKSmoothing
     ITKIOImageBase
-    ITKIONRRD
+    ITKIOPNG
+    ITKIOMeta
     )
 include(${ITK_USE_FILE})
 
@@ -19,23 +20,20 @@ target_link_libraries(CellularSegmentation2 ${ITK_LIBRARIES})
 
 
 enable_testing()
-find_path(INPUT_DATA_DIR
-  NAMES BrainProtonDensitySlice.png
-  HINTS ${ITK_SOURCE_DIR}/Examples/Data
+set(INPUT_DIR ${BioCell_SOURCE_DIR}/examples/Data)
+set(TEST_OUTPUT_DIR ${BioCell_BINARY_DIR}/Testing/Temporary)
+
+
+add_test(NAME CellularSegmentation1Test
+  COMMAND CellularSegmentation1
+      ${INPUT_DIR}/BrainProtonDensitySlice.png
+      100 115 200 255 3000
+      ${TEST_OUTPUT_DIR}/CellularSegmentation1Test.vtk
+  )
+
+add_test(NAME CellularSegmentation2Test
+  COMMAND CellularSegmentation2
+      ${INPUT_DIR}/brainweb1e1a10f20.mha
+      81 113 96 220 255 2000
+      ${TEST_OUTPUT_DIR}/CellularSegmentation2Test.vtk
   )
-set(TEST_OUTPUT_DIR ${BioCell_Examples_BINARY_DIR}/Testing/Temporary)
-
-if(INPUT_DATA_DIR)
-  add_test(NAME CellularSegmentation1Test
-    COMMAND CellularSegmentation1
-        ${INPUT_DATA_DIR}/BrainProtonDensitySlice.png
-        100 115 200 255 3000
-        ${TEST_OUTPUT_DIR}/CellularSegmentation1Test.vtk
-    )
-  add_test(NAME CellularSegmentation2Test
-    COMMAND CellularSegmentation2
-        ${INPUT_DATA_DIR}/BrainWeb/brainweb1e1a10f20.mha}
-        81 113 96 220 255 2000
-        ${TEST_OUTPUT_DIR}/CellularSegmentation2Test.vtk
-    )
-endif()