Method ConvertImage

Examples/DicomConvert/DicomConvert.cs:112–153

(string inputFile, string outputFile, int? newWidth)

        }

        static bool ConvertImage(string inputFile, string outputFile, int? newWidth)
        {
            try
            {
                var reader = new ImageFileReader();
                // Only read DICOM images
                reader.SetImageIO("GDCMImageIO");
                reader.SetFileName(inputFile);
                var image = reader.Execute();
                var imageSize = image.GetSize();
                // If 3D image with single slice, treat as 2D
                if (imageSize.Count == 3 && imageSize[2] == 1) {
                  ExtractImageFilter extractFilter = new ExtractImageFilter();
                  extractFilter.SetIndex(new VectorInt32( new int[] { 0, 0, 0 }));
                  imageSize[2] = 0;
                  extractFilter.SetSize(imageSize);
                  image = extractFilter.Execute(image);
                }
                // Resample if new width is specified
                if (newWidth.HasValue)
                {
                    var originalSize = image.GetSize();
                    var originalSpacing = image.GetSpacing();
                    double newSpacing = ((originalSize[0] - 1) * originalSpacing[0]) / (newWidth.Value - 1);
                    long newHeight = (long)(((originalSize[1] - 1) * originalSpacing[1]) / newSpacing);
                    image = SimpleITK.Resample(image, new VectorUInt32(new long[] { newWidth.Value, newHeight }), new Transform(), InterpolatorEnum.sitkLinear,
                        image.GetOrigin(), new VectorDouble(new double[] { newSpacing, newSpacing }), image.GetDirection(), 0, image.GetPixelID());
                }
                // If a single channel image, rescale to [0,255] and cast to UInt8.
                if (image.GetNumberOfComponentsPerPixel() == 1)
                {
                    image = SimpleITK.RescaleIntensity(image, 0, 255);
                    image = SimpleITK.Cast(image, PixelIDValueEnum.sitkUInt8);
                }
                SimpleITK.WriteImage(image, outputFile);
                return true;
            }
            catch
            {
                return false;
            }
        }
    }
}