/// <summary>
/// Reads an ITK image from file, specifying the output pixel type.
/// </summary>
/// <param name="file">filename</param>
/// <param name="outputType">output pixel type</param>
/// <returns>image</returns>
public static sitk.Image ReadITKImageFromFile(string file, sitk.PixelIDValueEnum outputType)
{
sitk.ImageFileReader reader = new sitk.ImageFileReader();
reader.SetFileName(file);
reader.SetOutputPixelType(outputType);
return(reader.Execute());
}
/// <summary>
/// Reads an ITK image as a grayscale image.
/// </summary>
/// <param name="file">filename</param>
/// <param name="outputType">output datatype</param>
/// <param name="channel">channel to extract</param>
/// <returns>grayscale ITK image</returns>
public static sitk.Image ReadITKImageAsGrayscaleFromFile(string file, sitk.PixelIDValueEnum outputType, ColorChannel channel)
{
sitk.ImageFileReader reader = new sitk.ImageFileReader();
reader.SetFileName(file);
reader.SetOutputPixelType(outputType);
sitk.Image temp = reader.Execute();
sitk.Image result = null;
sitk.VectorIndexSelectionCastImageFilter rgbVector = new sitk.VectorIndexSelectionCastImageFilter();
switch (channel)
{
case ColorChannel.R: result = rgbVector.Execute(temp, 0, sitk.PixelIDValueEnum.sitkFloat32); break;
case ColorChannel.G: result = rgbVector.Execute(temp, 1, sitk.PixelIDValueEnum.sitkFloat32); break;
case ColorChannel.B: result = rgbVector.Execute(temp, 2, sitk.PixelIDValueEnum.sitkFloat32); break;
}
return(result);
}
