/// <summary>
/// Resize image depending on a reference image.
/// </summary>
/// <param name="toResize">image</param>
/// <param name="referenceImage">reference image</param>
/// <returns>resampled image</returns>
public static sitk.Image ResizeImage(sitk.Image toResize, sitk.Image referenceImage)
{
if (toResize.GetWidth() == referenceImage.GetWidth() && toResize.GetHeight() == referenceImage.GetHeight())
{
return(toResize);
}
uint width = toResize.GetWidth() < referenceImage.GetWidth() ? referenceImage.GetWidth() : toResize.GetWidth();
uint height = toResize.GetHeight() < referenceImage.GetHeight() ? referenceImage.GetHeight() : toResize.GetHeight();
sitk.VectorUInt32 vec = new sitk.VectorUInt32();
vec.Add(width);
vec.Add(height);
sitk.ResampleImageFilter resampleFilter = new sitk.ResampleImageFilter();
resampleFilter.SetSize(vec);
resampleFilter.SetOutputOrigin(toResize.GetOrigin());
resampleFilter.SetOutputDirection(toResize.GetDirection());
resampleFilter.SetOutputSpacing(toResize.GetSpacing());
resampleFilter.SetOutputPixelType(referenceImage.GetPixelID());
resampleFilter.SetDefaultPixelValue(255.0);
sitk.Image resultImage = resampleFilter.Execute(toResize);
return(resultImage);
}
/// <summary>
/// Create a checkerboard image of two corresponding images.
/// </summary>
/// <param name="fImg01">image 1</param>
/// <param name="fImg02">image 2</param>
/// <param name="size">grid size of the checker boar</param>
/// <returns>checker board image</returns>
public static sitk.Image GetCheckerBoardV2(string fImg01, string fImg02, uint size = 0)
{
sitk.Image img01 = ReadWriteUtils.ReadITKImageFromFile(fImg01);
sitk.Image img02 = ReadWriteUtils.ReadITKImageFromFile(fImg02);
uint width = img01.GetWidth() > img02.GetWidth() ? img01.GetWidth() : img02.GetWidth();
uint height = img01.GetHeight() > img02.GetHeight() ? img01.GetHeight() : img02.GetHeight();
sitk.Image reference = ImageUtils.ResizeImage(img01, width, height);
sitk.Image transformed = ImageUtils.ResizeImage(img02, width, height);
sitk.CheckerBoardImageFilter checkerBoard = new sitk.CheckerBoardImageFilter();
uint lx = size;
uint ly = width / (height / size);
if (size != 0)
{
sitk.VectorUInt32 vec = new sitk.VectorUInt32();
vec.Add(ly);
vec.Add(lx);
checkerBoard.SetCheckerPattern(vec);
}
sitk.Image result = checkerBoard.Execute(reference, transformed);
img01.Dispose();
img02.Dispose();
reference.Dispose();
transformed.Dispose();
return(result);
}
public static sitk.Image GetCheckerBoard(sitk.Image img01, sitk.Image img02, uint size = 0)
{
uint width = img01.GetWidth() > img02.GetWidth() ? img01.GetWidth() : img02.GetWidth();
uint height = img01.GetHeight() > img02.GetHeight() ? img01.GetHeight() : img02.GetHeight();
//Console.WriteLine(string.Format("width: Img01 [{0}] - Img02 [{1}]", img01.GetWidth(), img02.GetWidth()));
//Console.WriteLine(string.Format("height: Img01 [{0}] - Img02 [{1}]", img01.GetHeight(), img02.GetHeight()));
//Console.WriteLine(string.Format("pixel type: Img01 [{0}] - Img02 [{1}]", img01.GetPixelIDTypeAsString(), img02.GetPixelIDTypeAsString()));
sitk.Image reference = ImageUtils.ResizeImage(img01, width, height, sitk.PixelIDValueEnum.sitkFloat32);
sitk.Image transformed = ImageUtils.ResizeImage(img02, width, height, sitk.PixelIDValueEnum.sitkFloat32);
sitk.CheckerBoardImageFilter checkerBoard = new sitk.CheckerBoardImageFilter();
if (size != 0)
{
sitk.VectorUInt32 vec = new sitk.VectorUInt32();
vec.Add(size);
vec.Add(size);
checkerBoard.SetCheckerPattern(vec);
}
sitk.Image temp = checkerBoard.Execute(reference, transformed);
sitk.CastImageFilter castImageFilter = new sitk.CastImageFilter();
castImageFilter.SetOutputPixelType(sitk.PixelIDValueEnum.sitkUInt8);
sitk.Image result = castImageFilter.Execute(temp);
temp.Dispose();
return(result);
}
/// <summary>
/// Load and resize image depending on the width and height of the largest image in stack.
/// </summary>
/// <param name="filename">filename of the image to load</param>
/// <param name="writeFilename">output filename if image should be written back to disk</param>
/// <returns>simpleitk image</returns>
private sitk.Image LoadAndResizeImage(string filename, string writeFilename = null)
{
sitk.Image refImage = ReadWriteUtils.ReadITKImageFromFile(filename, sitk.PixelIDValueEnum.sitkVectorUInt8);
if (refImage.GetWidth() == _parameters.LargestImageWidth && refImage.GetHeight() == _parameters.LargestImageHeight)
{
return(refImage);
}
else
{
sitk.Image refResized = ImageUtils.ResizeImage(refImage, _parameters.LargestImageWidth, _parameters.LargestImageHeight);
// write image if output filename is defined
if (writeFilename != null)
{
ReadWriteUtils.WriteSitkImage(refResized, Path.Combine(_parameters.OutputDirectory, Path.GetFileName(writeFilename)));
}
return(refResized);
}
}
/// <summary>
/// Resize image by new width and height.
/// </summary>
/// <param name="image">input image</param>
/// <param name="newWidth">width</param>
/// <param name="newHeight">height</param>
/// <returns>resized image</returns>
public static sitk.Image ResizeImage(sitk.Image image, uint newWidth, uint newHeight)
{
if (image.GetWidth() == newWidth && image.GetHeight() == newHeight)
{
return(image);
}
sitk.VectorUInt32 vec = new sitk.VectorUInt32();
vec.Add(newWidth);
vec.Add(newHeight);
sitk.ResampleImageFilter resampleFilter = new sitk.ResampleImageFilter();
resampleFilter.SetSize(vec);
resampleFilter.SetOutputOrigin(image.GetOrigin());
resampleFilter.SetOutputDirection(image.GetDirection());
resampleFilter.SetOutputSpacing(image.GetSpacing());
resampleFilter.SetOutputPixelType(image.GetPixelID());
resampleFilter.SetDefaultPixelValue(255.0);
sitk.Image resultImage = resampleFilter.Execute(image);
return(resultImage);
}