public static void Startup() public:static void Startup();
def Startup(self): This static method must be called before calling any other ColorConversion methods. This usually occurs at the start of your application.
This example will convert an image to CMYK color space and save the converted image to disk.
using Leadtools;using Leadtools.Codecs;using Leadtools.ColorConversion;public void StartupExample(){// Initialize the RasterCodecs classRasterCodecs codecs = new RasterCodecs();// StartUp the ColorConversion.RasterColorConverterEngine.Startup();// The input file namestring inputFileName = Path.Combine(LEAD_VARS.ImagesDir, "image1.cmp");// load the input image as Bgr.RasterImage bgrImage = codecs.Load(inputFileName, 24, CodecsLoadByteOrder.Bgr, 1, 1);// Image buffer arraybyte[] bgrBuffer = new byte[bgrImage.BytesPerLine * bgrImage.Height];bgrImage.Access();// get image bufferfor (int i = 0; i < bgrImage.Height; i++)bgrImage.GetRow(i, bgrBuffer, i * bgrImage.BytesPerLine, bgrImage.BytesPerLine);bgrImage.Release();// Initialize a new Converter objectRasterColorConverterEngine converter = new RasterColorConverterEngine();byte[] cmykBuffer = new byte[bgrImage.Height * bgrImage.Width * 4];try{// Start the color conversionconverter.Start(ConversionColorFormat.Bgr, ConversionColorFormat.Cmyk, null);// convert the image bufferconverter.Convert(bgrBuffer, // input buffer0, // offset from the beginning of the source buffercmykBuffer, // output buffer0, // offset from the beginning of the destination bufferbgrImage.Width, // pixels widthbgrImage.Height, // pixels heightbgrImage.BytesPerLine - (bgrImage.Width * (bgrImage.BitsPerPixel / 8)),0); // 0 bytes align// stop the conversionconverter.Stop();// Initialize an image to hold the converted buffer.RasterImage cmykImage = new RasterImage(RasterMemoryFlags.Conventional, bgrImage.Width, bgrImage.Height, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, null, IntPtr.Zero, 0);// Start the color conversionconverter.Start(ConversionColorFormat.Cmyk, ConversionColorFormat.Bgr, null);// convert the image bufferconverter.ConvertToImage(cmykBuffer, // converted buffer0, // offset from the beginning of the source buffercmykImage, // image to be savebgrImage.Width, // pixels widthbgrImage.Height, // pixels height0, // 0 bytes alignbgrImage.BytesPerLine - (bgrImage.Width * (bgrImage.BitsPerPixel / 8)));// stop the conversionconverter.Stop();// the output File Name.string outputFileName = Path.Combine(LEAD_VARS.ImagesDir, "ResultImage.bmp");// Save the result image.codecs.Save(cmykImage, outputFileName, RasterImageFormat.Bmp, 24);// dispose of the used imagesbgrImage.Dispose();cmykImage.Dispose();}catch (Exception ex){Debug.WriteLine(ex.ToString());}// Shutdown the ColorConversion.RasterColorConverterEngine.Shutdown();}static class LEAD_VARS{public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";}
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