STYLE: Replace loops doing Set(0.0) with AllocateInitialized(), in tests

Replaced `while (!it.IsAtEnd())` loops doing `it.Set(0.0)` with
`inputImage->AllocateInitialized()` calls.

Author: N-Dekker

Modules/Filtering/DiffusionTensorImage/test/itkTensorFractionalAnisotropyImageFilterTest.cxx

@@ -52,21 +52,11 @@ itkTensorFractionalAnisotropyImageFilterTest(int, char *[])
 
   // Initialize Image A
   inputImage->SetRegions(region);
-  inputImage->Allocate();
+  inputImage->AllocateInitialized();
 
   // Declare Iterator type for the input image
   using myIteratorType = itk::ImageRegionIteratorWithIndex<myImageType>;
 
-  // Create one iterator for the Input Image A (this is a light object)
-  myIteratorType it(inputImage, inputImage->GetRequestedRegion());
-
-  // Initialize the content of Image A
-  while (!it.IsAtEnd())
-  {
-    it.Set(0.0);
-    ++it;
-  }
-
   size[0] = 4;
   size[1] = 4;
   size[2] = 4;

Modules/Filtering/DiffusionTensorImage/test/itkTensorRelativeAnisotropyImageFilterTest.cxx

@@ -52,21 +52,11 @@ itkTensorRelativeAnisotropyImageFilterTest(int, char *[])
 
   // Initialize Image A
   inputImage->SetRegions(region);
-  inputImage->Allocate();
+  inputImage->AllocateInitialized();
 
   // Declare Iterator type for the input image
   using myIteratorType = itk::ImageRegionIteratorWithIndex<myImageType>;
 
-  // Create one iterator for the Input Image A (this is a light object)
-  myIteratorType it(inputImage, inputImage->GetRequestedRegion());
-
-  // Initialize the content of Image A
-  while (!it.IsAtEnd())
-  {
-    it.Set(0.0);
-    ++it;
-  }
-
   size[0] = 4;
   size[1] = 4;
   size[2] = 4;

Modules/Filtering/ImageFeature/test/itkGradientVectorFlowImageFilterTest.cxx

@@ -64,7 +64,7 @@ itkGradientVectorFlowImageFilterTest(int, char *[])
 
   // Initialize Image A
   inputImage->SetRegions(region);
-  inputImage->Allocate();
+  inputImage->AllocateInitialized();
 
   interImage->SetRegions(region);
   interImage->Allocate();
@@ -77,18 +77,9 @@ itkGradientVectorFlowImageFilterTest(int, char *[])
 
   using myOutputIteratorType = itk::ImageRegionIteratorWithIndex<myGradientImageType>;
 
-  // Create one iterator for the Input Image A (this is a light object)
-  myIteratorType it(inputImage, inputImage->GetRequestedRegion());
-
   // Initialize the content of Image A
   std::cout << "Input Image initialization " << std::endl;
 
-  while (!it.IsAtEnd())
-  {
-    it.Set(0.0);
-    ++it;
-  }
-
   size[0] = 100;
   size[1] = 100;
 

Modules/Filtering/ImageFeature/test/itkHessian3DToVesselnessMeasureImageFilterTest.cxx

@@ -59,21 +59,11 @@ itkHessian3DToVesselnessMeasureImageFilterTest(int argc, char * argv[])
 
   // Initialize Image A
   inputImage->SetRegions(region);
-  inputImage->Allocate();
+  inputImage->AllocateInitialized();
 
   // Declare Iterator type for the input image
   using myIteratorType = itk::ImageRegionIteratorWithIndex<myImageType>;
 
-  // Create one iterator for the Input Image A (this is a light object)
-  myIteratorType it(inputImage, inputImage->GetRequestedRegion());
-
-  // Initialize the content of Image A
-  while (!it.IsAtEnd())
-  {
-    it.Set(0.0);
-    ++it;
-  }
-
   size[0] = 1;
   size[1] = 8;
   size[2] = 1;

Modules/Filtering/ImageFeature/test/itkHessianRecursiveGaussianFilterTest.cxx

@@ -55,21 +55,11 @@ itkHessianRecursiveGaussianFilterTest(int argc, char * argv[])
 
   // Initialize Image A
   inputImage->SetRegions(region);
-  inputImage->Allocate();
+  inputImage->AllocateInitialized();
 
   // Declare Iterator type for the input image
   using myIteratorType = itk::ImageRegionIteratorWithIndex<myImageType>;
 
-  // Create one iterator for the Input Image A (this is a light object)
-  myIteratorType it(inputImage, inputImage->GetRequestedRegion());
-
-  // Initialize the content of Image A
-  while (!it.IsAtEnd())
-  {
-    it.Set(0.0);
-    ++it;
-  }
-
   size[0] = 4;
   size[1] = 4;
   size[2] = 4;

Modules/Filtering/ImageGradient/test/itkGradientRecursiveGaussianFilterSpeedTest.cxx

@@ -62,21 +62,11 @@ itkGradientRecursiveGaussianFilterSpeedTest(int argc, char * argv[])
 
   // Initialize Image A
   inputImage->SetRegions(region);
-  inputImage->Allocate();
+  inputImage->AllocateInitialized();
 
   // Declare Iterator type for the input image
   using myIteratorType = itk::ImageRegionIteratorWithIndex<myImageType>;
 
-  // Create one iterator for the Input Image A (this is a light object)
-  myIteratorType it(inputImage, inputImage->GetRequestedRegion());
-
-  // Initialize the content of Image A
-  while (!it.IsAtEnd())
-  {
-    it.Set(0.0);
-    ++it;
-  }
-
   size.Fill(imageSize - 4);
 
   start[0] = 2;

Modules/Filtering/ImageGradient/test/itkGradientRecursiveGaussianFilterTest.cxx

@@ -59,21 +59,11 @@ itkGradientRecursiveGaussianFilterTest(int argc, char * argv[])
 
   // Initialize Image A
   inputImage->SetRegions(region);
-  inputImage->Allocate();
+  inputImage->AllocateInitialized();
 
   // Declare Iterator type for the input image
   using myIteratorType = itk::ImageRegionIteratorWithIndex<myImageType>;
 
-  // Create one iterator for the Input Image A (this is a light object)
-  myIteratorType it(inputImage, inputImage->GetRequestedRegion());
-
-  // Initialize the content of Image A
-  while (!it.IsAtEnd())
-  {
-    it.Set(0.0);
-    ++it;
-  }
-
   size[0] = 4;
   size[1] = 4;
   size[2] = 4;

Modules/Filtering/ImageGradient/test/itkGradientRecursiveGaussianFilterTest2.cxx

@@ -55,21 +55,11 @@ itkGradientRecursiveGaussianFilterTest2(int, char *[])
 
   // Initialize Image A
   inputImage->SetRegions(region);
-  inputImage->Allocate();
+  inputImage->AllocateInitialized();
 
   // Declare Iterator type for the input image
   using myIteratorType = itk::ImageRegionIteratorWithIndex<myImageType>;
 
-  // Create one iterator for the Input Image A (this is a light object)
-  myIteratorType it(inputImage, inputImage->GetRequestedRegion());
-
-  // Initialize the content of Image A
-  while (!it.IsAtEnd())
-  {
-    it.Set(0.0);
-    ++it;
-  }
-
   size[0] = 32;
 
   start[0] = 16;

Modules/Filtering/Smoothing/test/itkRecursiveGaussianImageFilterTest.cxx

@@ -59,22 +59,13 @@ itkRecursiveGaussianImageFilterTest(int, char *[])
 
     // Initialize Image A
     inputImage->SetRegions(region);
-    inputImage->Allocate();
+    inputImage->AllocateInitialized();
 
     // Declare Iterator types appropriate for each image
     using myIteratorType = itk::ImageRegionIteratorWithIndex<myImageType>;
 
-
-    // Create one iterator for the Input Image A (this is a light object)
-    myIteratorType it(inputImage, inputImage->GetRequestedRegion());
-
     // Initialize the content of Image A
     std::cout << "Input Image initialization " << std::endl;
-    while (!it.IsAtEnd())
-    {
-      it.Set(0.0);
-      ++it;
-    }
 
     size[0] = 60;
     size[1] = 60;