public void TestDistance1D()
{
ImageRaster3D <bool> mask = new ImageRaster3D <bool>(5, 1, 1);
mask[0] = true;
mask[3] = true;
ImageRaster3D <float> distance = ToolsDistance.DistanceTransform3D(mask, new float[] { 1.5f, 1.5f, 1.5f });
Assert.AreEqual(0.0f, distance[0]);
Assert.AreEqual(1.5f, distance[1]);
Assert.AreEqual(1.5f, distance[2]);
Assert.AreEqual(0.0f, distance[3]);
Assert.AreEqual(1.5f, distance[4]);
}
public void TestDistance3DOosterbroek0()
{
ImageRaster3D <bool> mask = CreateTestMask3D0();
ImageRaster3D <float> distance_true = new ImageRaster3D <float>(mask.Raster);
ImageRaster3D <float> distance_test = new ImageRaster3D <float>(mask.Raster);
float[] voxel_size = new float[] { 1, 1, 1 };
ToolsDistance.DistanceTransform3DMediumRBA(mask, voxel_size, distance_true);
ToolsDistance.DistanceTransform3DOosterbroekRBA(mask, voxel_size, distance_test);
for (int index = 0; index < distance_test.ElementCount; index++)
{
Assert.AreEqual(distance_true[index], distance_test[index]);
}
}
public void TestDistance3DMedium()
{
ImageRaster3D <bool> mask = CreateTestMask3D0();
ImageRaster3D <float> distance = new ImageRaster3D <float>(mask.Raster);
ToolsDistance.DistanceTransform3DMediumRBA(mask, new float[] { 1.0f, 1.0f, 1.0f }, distance);
Assert.AreEqual(0.0f, distance[0]);
Assert.AreEqual(1.0f, distance[1]);
Assert.AreEqual(ToolsMath.Sqrt(2.0f), distance[2]);
Assert.AreEqual(2.0f, distance[3]);
Assert.AreEqual(ToolsMath.Sqrt(5.0f), distance[4]);
Assert.AreEqual(ToolsMath.Sqrt(8.0f), distance[20]);
Assert.AreEqual(ToolsMath.Sqrt(24.0f), distance[120]);
Assert.AreEqual(ToolsMath.Sqrt(17.0f), distance[124]);
}
public void TestDistance3DOosterbroek1()
{
ImageRaster3D <bool> mask = CreateTestMask3D1();
ImageRaster3D <float> distance_true = new ImageRaster3D <float>(mask.Raster);
ImageRaster3D <float> distance_test = new ImageRaster3D <float>(mask.Raster);
float[] voxel_size = new float[] { 0.31f, 0.31f, 1.25f };
ToolsDistance.DistanceTransform3DMediumRBA(mask, voxel_size, distance_true);
ToolsDistance.DistanceTransform3DOosterbroekRBA(mask, voxel_size, distance_test);
float Tol = 0.1f;
for (int index = 0; index < distance_test.ElementCount; index++)
{
Assert.IsTrue(Math.Abs(distance_true[index] - distance_test[index]) < Tol);
}
}
public void TestDistance2D()
{
ImageRaster3D <bool> mask = new ImageRaster3D <bool>(5, 5, 1);
mask[0] = true;
mask[6] = true;
mask[12] = true;
mask[13] = true;
mask[19] = true;
ImageRaster3D <float> distance = ToolsDistance.DistanceTransform3D(mask, new float[] { 1.0f, 1.0f, 1.0f });
Assert.AreEqual(0.0f, distance[0]);
Assert.AreEqual(1.0f, distance[1]);
Assert.AreEqual(ToolsMath.Sqrt(2.0f), distance[2]);
Assert.AreEqual(2.0f, distance[3]);
Assert.AreEqual(ToolsMath.Sqrt(5.0f), distance[4]);
Assert.AreEqual(ToolsMath.Sqrt(8.0f), distance[20]);
}
public void TestDistance2DOosterbroek()
{
ImageRaster2D <bool> mask = new ImageRaster2D <bool>(5, 5);
mask[0] = true;
mask[6] = true;
mask[12] = true;
mask[13] = true;
mask[19] = true;
ImageRaster2D <float> distance = new ImageRaster2D <float>(mask.Raster);
ToolsDistance.DistanceTransform2DOosterbroekRBA(mask, new float[] { 1.0f, 1.0f, 1.0f }, distance);
Assert.AreEqual(0.0f, distance[0]);
Assert.AreEqual(1.0f, distance[1]);
Assert.AreEqual(ToolsMath.Sqrt(2.0f), distance[2]);
Assert.AreEqual(2.0f, distance[3]);
Assert.AreEqual(ToolsMath.Sqrt(5.0f), distance[4]);
Assert.AreEqual(ToolsMath.Sqrt(8.0f), distance[20]);
}
