private Image ApplyCastImageFilter(Image image)
{
Ensure.ArgumentNotNull(image, nameof(image));
// TODO: find mapping between itk.simple.PixelIDValueEnum and System.Drawing.Imaging.PixelFormat
// see https://github.com/SimpleITK/SimpleITK/issues/582
// Execute cast filter
CastImageFilter filter = new CastImageFilter();
PixelIDValueEnum imageType = PixelIDValueEnum.swigToEnum(image.GetPixelIDValue());
if (imageType == PixelIDValueEnum.sitkVectorUInt8 || imageType == PixelIDValueEnum.sitkUInt8)
{
return(image);
}
else
{
if (imageType.ToString().ToLowerInvariant().Contains("vector"))
{
filter.SetOutputPixelType(PixelIDValueEnum.sitkVectorUInt8);
}
else
{
filter.SetOutputPixelType(PixelIDValueEnum.sitkUInt8);
}
Image output = filter.Execute(image);
filter.Dispose();
image.Dispose();
return(output);
}
}
private IntPtr GetBuffer(Image image)
{
if (image == null)
{
throw new ArgumentNullException(nameof(image));
}
PixelIDValueEnum imageType = PixelIDValueEnum.swigToEnum(image.GetPixelIDValue());
if (imageType.swigValue == PixelIDValueEnum.sitkUInt8.swigValue)
{
return(image.GetBufferAsUInt8());
}
else if (imageType.swigValue == PixelIDValueEnum.sitkUInt16.swigValue)
{
return(image.GetBufferAsUInt16());
}
else if (imageType.swigValue == PixelIDValueEnum.sitkUInt32.swigValue)
{
return(image.GetBufferAsUInt32());
}
else if (imageType.swigValue == PixelIDValueEnum.sitkUInt64.swigValue)
{
throw new NotSupportedException($"The image type {imageType} is not supported.");
}
else if (imageType.swigValue == PixelIDValueEnum.sitkInt8.swigValue)
{
return(image.GetBufferAsInt8());
}
else if (imageType.swigValue == PixelIDValueEnum.sitkInt16.swigValue)
{
return(image.GetBufferAsInt16());
}
else if (imageType.swigValue == PixelIDValueEnum.sitkInt32.swigValue)
{
return(image.GetBufferAsInt32());
}
else if (imageType.swigValue == PixelIDValueEnum.sitkInt64.swigValue)
{
throw new NotSupportedException($"The image type {imageType} is not supported.");
}
else if (imageType.swigValue == PixelIDValueEnum.sitkFloat32.swigValue ||
imageType.swigValue == PixelIDValueEnum.sitkComplexFloat32.swigValue)
{
return(image.GetBufferAsFloat());
}
else if (imageType.swigValue == PixelIDValueEnum.sitkFloat64.swigValue ||
imageType.swigValue == PixelIDValueEnum.sitkComplexFloat64.swigValue)
{
return(image.GetBufferAsDouble());
}
else
{
throw new NotSupportedException($"The image type {imageType} is not supported.");
}
}
/// <summary>
/// Gets the number of labels in the ITK image.
/// </summary>
/// <param name="image">The ITK image.</param>
/// <returns>The number of labels in the ITK image.</returns>
/// <exception cref="ArgumentNullException">image</exception>
public ulong GetLabelCount(Image image)
{
if (image == null)
{
throw new ArgumentNullException(nameof(image));
}
PixelIDValueEnum imageType = PixelIDValueEnum.swigToEnum(image.GetPixelIDValue());
Image labelImage = new Image(image.GetWidth(), image.GetHeight(), image.GetDepth(), imageType);
labelImage.SetOrigin(image.GetOrigin());
labelImage.SetDirection(image.GetDirection());
labelImage.SetSpacing(image.GetSpacing());
LabelStatisticsImageFilter filter = new LabelStatisticsImageFilter();
filter.Execute(labelImage, image);
return(filter.GetNumberOfLabels());
}
/// <inheritdoc/>
public ulong GetLabelCount(Image image)
{
Ensure.ArgumentNotNull(image, nameof(image));
ulong labelCount = 0;
PixelIDValueEnum imageType = PixelIDValueEnum.swigToEnum(image.GetPixelIDValue());
using (Image labelImage = new Image(image.GetWidth(), image.GetHeight(), image.GetDepth(), imageType))
{
labelImage.SetOrigin(image.GetOrigin());
labelImage.SetDirection(image.GetDirection());
labelImage.SetSpacing(image.GetSpacing());
LabelStatisticsImageFilter filter = new LabelStatisticsImageFilter();
filter.Execute(labelImage, image);
labelCount = filter.GetNumberOfLabels();
filter.Dispose();
}
return(labelCount);
}