private static void TestVolume(bool signed, VolumeFunction f, IEnumerable<IVolumeSlicerParams> slicerParams, string testName, ImageKernelFunction imageKernel, VolumeKernelFunction volumeKernel)
{
const int FULL_SCALE = 65535;
VolumeFunction normalizedFunction = f.Normalize(100);
using (Volume volume = normalizedFunction.CreateVolume(100, signed))
{
float offset = signed ? -32768 : 0;
foreach (IVolumeSlicerParams slicing in slicerParams)
{
List<double> list = new List<double>();
using (VolumeSlicer slicer = new VolumeSlicer(volume, slicing, DicomUid.GenerateUid().UID))
{
foreach (ISopDataSource slice in slicer.CreateSlices())
{
using (ImageSop imageSop = new ImageSop(slice))
{
foreach (IPresentationImage image in PresentationImageFactory.Create(imageSop))
{
IImageSopProvider imageSopProvider = (IImageSopProvider) image;
IImageGraphicProvider imageGraphicProvider = (IImageGraphicProvider) image;
DicomImagePlane dip = DicomImagePlane.FromImage(image);
for (int y = 1; y < imageSopProvider.Frame.Rows - 1; y++)
{
for (int x = 1; x < imageSopProvider.Frame.Columns - 1; x++)
{
// pixels on the extreme sides of the volume tend to have more interpolation error due to MPR padding values
Vector3D vector = dip.ConvertToPatient(new PointF(x, y)); // +new Vector3D(-0.5f, -0.5f, 0);
if (Between(vector.X, 1, 98) && Between(vector.Y, 1, 98) && Between(vector.Z, 1, 98))
{
float expected = volumeKernel.Invoke(normalizedFunction, vector.X, vector.Y, vector.Z) + offset;
float actual = imageKernel.Invoke(imageGraphicProvider.ImageGraphic.PixelData, x, y);
list.Add(Math.Abs(expected - actual));
}
}
}
image.Dispose();
}
}
slice.Dispose();
}
}
Statistics stats = new Statistics(list);
Trace.WriteLine(string.Format("Testing {0}", testName));
Trace.WriteLine(string.Format("\tFunction/Slicing: {0} / {1}", normalizedFunction.Name, slicing.Description));
Trace.WriteLine(string.Format("\t Pixel Rep: {0}", signed ? "signed" : "unsigned"));
Trace.WriteLine(string.Format("\t Voxels Compared: {0}", list.Count));
Trace.WriteLine(string.Format("\t Mean Delta: {0:f2} ({1:p2} of full scale)", stats.Mean, stats.Mean/FULL_SCALE));
Trace.WriteLine(string.Format("\t StdDev Delta: {0:f2} ({1:p2} of full scale)", stats.StandardDeviation, stats.StandardDeviation/FULL_SCALE));
Assert.Less(stats.Mean, FULL_SCALE*0.05, "Mean delta exceeds 5% of full scale ({0})", FULL_SCALE);
Assert.Less(stats.StandardDeviation, FULL_SCALE*0.05, "StdDev delta exceeds 5% of full scale ({0})", FULL_SCALE);
}
}
}
private static void TestVolume(bool signed, VolumeFunction f, IEnumerable <IVolumeSlicerParams> slicerParams, string testName, ImageKernelFunction imageKernel, VolumeKernelFunction volumeKernel)
{
const int FULL_SCALE = 65535;
VolumeFunction normalizedFunction = f.Normalize(100);
using (Volume volume = normalizedFunction.CreateVolume(100, signed))
{
float offset = signed ? -32768 : 0;
foreach (IVolumeSlicerParams slicing in slicerParams)
{
List <double> list = new List <double>();
using (VolumeSlicer slicer = new VolumeSlicer(volume, slicing, DicomUid.GenerateUid().UID))
{
foreach (ISopDataSource slice in slicer.CreateSlices())
{
using (ImageSop imageSop = new ImageSop(slice))
{
foreach (IPresentationImage image in PresentationImageFactory.Create(imageSop))
{
IImageSopProvider imageSopProvider = (IImageSopProvider)image;
IImageGraphicProvider imageGraphicProvider = (IImageGraphicProvider)image;
DicomImagePlane dip = DicomImagePlane.FromImage(image);
for (int y = 1; y < imageSopProvider.Frame.Rows - 1; y++)
{
for (int x = 1; x < imageSopProvider.Frame.Columns - 1; x++)
{
// pixels on the extreme sides of the volume tend to have more interpolation error due to MPR padding values
Vector3D vector = dip.ConvertToPatient(new PointF(x, y)); // +new Vector3D(-0.5f, -0.5f, 0);
if (Between(vector.X, 1, 98) && Between(vector.Y, 1, 98) && Between(vector.Z, 1, 98))
{
float expected = volumeKernel.Invoke(normalizedFunction, vector.X, vector.Y, vector.Z) + offset;
float actual = imageKernel.Invoke(imageGraphicProvider.ImageGraphic.PixelData, x, y);
list.Add(Math.Abs(expected - actual));
}
}
}
image.Dispose();
}
}
slice.Dispose();
}
}
Statistics stats = new Statistics(list);
Trace.WriteLine(string.Format("Testing {0}", testName));
Trace.WriteLine(string.Format("\tFunction/Slicing: {0} / {1}", normalizedFunction.Name, slicing.Description));
Trace.WriteLine(string.Format("\t Pixel Rep: {0}", signed ? "signed" : "unsigned"));
Trace.WriteLine(string.Format("\t Voxels Compared: {0}", list.Count));
Trace.WriteLine(string.Format("\t Mean Delta: {0:f2} ({1:p2} of full scale)", stats.Mean, stats.Mean / FULL_SCALE));
Trace.WriteLine(string.Format("\t StdDev Delta: {0:f2} ({1:p2} of full scale)", stats.StandardDeviation, stats.StandardDeviation / FULL_SCALE));
Assert.Less(stats.Mean, FULL_SCALE * 0.05, "Mean delta exceeds 5% of full scale ({0})", FULL_SCALE);
Assert.Less(stats.StandardDeviation, FULL_SCALE * 0.05, "StdDev delta exceeds 5% of full scale ({0})", FULL_SCALE);
}
}
}
