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Startup Method

Summary
Initializes the required data to start the color conversion toolkit.
Syntax
C#
C++
public static void Startup() 
vb[VB Syntax] 
  
Public Shared Sub Startup() 
public: 
static void Startup();  
Remarks

This static method must be called before calling any other ColorConversion methods. This usually occurs at the start of your application.

Example

This example will convert an image to CMYK color space and save the converted image to disk.

C#
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ColorConversion; 
 
 
public void StartupExample() 
{ 
   // Initialize the RasterCodecs class  
   RasterCodecs codecs = new RasterCodecs(); 
 
   // StartUp the ColorConversion.  
   RasterColorConverterEngine.Startup(); 
 
   // The input file name  
   string 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 array  
   byte[] bgrBuffer = new byte[bgrImage.BytesPerLine * bgrImage.Height]; 
 
   bgrImage.Access(); 
   // get image buffer  
   for (int i = 0; i < bgrImage.Height; i++) 
      bgrImage.GetRow(i, bgrBuffer, i * bgrImage.BytesPerLine, bgrImage.BytesPerLine); 
   bgrImage.Release(); 
 
   // Initialize a new Converter object  
   RasterColorConverterEngine converter = new RasterColorConverterEngine(); 
 
   byte[] cmykBuffer = new byte[bgrImage.Height * bgrImage.Width * 4]; 
 
   try 
   { 
      // Start the color conversion  
      converter.Start(ConversionColorFormat.Bgr, ConversionColorFormat.Cmyk, null); 
 
      // convert the image buffer   
      converter.Convert(bgrBuffer, // input buffer  
         0, // offset from the beginning of the source buffer  
         cmykBuffer, // output buffer  
         0, // offset from the beginning of the destination buffer  
         bgrImage.Width, // pixels width  
         bgrImage.Height, // pixels height  
         bgrImage.BytesPerLine - (bgrImage.Width * (bgrImage.BitsPerPixel / 8)), 
         0); // 0 bytes align 
 
      // stop the conversion  
      converter.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 conversion  
      converter.Start(ConversionColorFormat.Cmyk, ConversionColorFormat.Bgr, null); 
 
      // convert the image buffer  
      converter.ConvertToImage(cmykBuffer, // converted buffer  
         0,                // offset from the beginning of the source buffer  
         cmykImage,        // image to be save  
         bgrImage.Width,   // pixels width  
         bgrImage.Height,  // pixels height  
         0,                // 0 bytes align  
         bgrImage.BytesPerLine - (bgrImage.Width * (bgrImage.BitsPerPixel / 8))); 
 
      // stop the conversion  
      converter.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 images  
      bgrImage.Dispose(); 
      cmykImage.Dispose(); 
   } 
   catch (Exception ex) 
   { 
      MessageBox.Show(ex.ToString()); 
   } 
 
   // Shutdown the ColorConversion.  
   RasterColorConverterEngine.Shutdown(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
} 
Requirements

Target Platforms

Help Version 22.0.2022.4.4
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Leadtools.ColorConversion Assembly

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© 1991-2022 LEAD Technologies, Inc. All Rights Reserved.