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LEADTOOLS Color Conversion (Leadtools.ColorConversion assembly)

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WhitePoint Property (ConversionParameters)






Gets or sets the white point properties.
Syntax
public ConversionWhitePoint WhitePoint {get; set;}
'Declaration
 
Public Property WhitePoint As ConversionWhitePoint
'Usage
 
Dim instance As ConversionParameters
Dim value As ConversionWhitePoint
 
instance.WhitePoint = value
 
value = instance.WhitePoint

            

            
public:
property ConversionWhitePoint WhitePoint {
   ConversionWhitePoint get();
   void set (    ConversionWhitePoint value);
}

Property Value

The white point properties.
Example

This example will converts RGB to CMYK using built-in conversion.

Copy Code  
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ColorConversion

<TestMethod()> _
Public Sub WhitePointExampleExample()
   ' Initialize the RasterCodecs class
   Dim codecs As RasterCodecs = New RasterCodecs
   ' StartUp the ColorConversion.
   RasterColorConverterEngine.Startup()

   ' The input file name
   Dim inputFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp")

   ' load the input image as Rgb.
   Dim rgbImage As RasterImage = codecs.Load(inputFileName, 24, CodecsLoadByteOrder.Rgb, 1, 1)

   ' Image buffer array
   Dim rgbBuffer(rgbImage.BytesPerLine * rgbImage.Height) As Byte

   ' get image buffer
   For i As Integer = 0 To rgbImage.Height - 1
      rgbImage.GetRow(i, rgbBuffer, (i * rgbImage.BytesPerLine), rgbImage.BytesPerLine)
   Next
   ' Initialize the Cmyk buffer array
   Dim cmykBuffer(CInt(rgbImage.Height * rgbImage.Width * 4)) As Byte

   ' Initialize a new Converter object
   Dim converter As New RasterColorConverterEngine

   ' Initialize a new ConversionParameters new class object.
   Dim convParams As ConversionParameters = New ConversionParameters

   ' Initialize the WhitePoint property class.
   Dim whitePoint As ConversionWhitePoint = ConversionWhitePoint.Empty

   ' Set the WhitePoint property.
   whitePoint.WhitePoint = ConversionWhitePointType.D50

   ' Set the XWhite property.
   whitePoint.XWhite = 0

   ' Set the YWhite property.
   whitePoint.YWhite = 0
   convParams.WhitePoint = whitePoint

   ' Set the Quantization property.
   convParams.Quantization = 8

   ' Set the Method property.
   convParams.Method = ConversionMethodFlags.UseBuiltIn

   ' Set the ActiveMethod property.
   convParams.ActiveMethod = ConversionMethodFlags.UseBuiltIn

   ' Set GcrLevel property.
   Dim cmykParameters As New ConversionCmykParameters()
   cmykParameters.GcrLevel = 150
   convParams.CmykParameters = cmykParameters

   Try
      ' Start the ColorConversion.
      converter.Start(ConversionColorFormat.Rgb, ConversionColorFormat.Cmyk, convParams)

      ' Convert Rgb to CMYK.
      converter.Convert(rgbBuffer, _
          0, _
          cmykBuffer, _
          0, _
          rgbImage.Width, _
          rgbImage.Height, _
          CInt(rgbImage.BytesPerLine - (rgbImage.Width * (rgbImage.BitsPerPixel / 8))), _
          0)

      ' Stop the ColorConversion.
      converter.Stop()

      ' Initialize an image to hold the converted buffer.
      Dim cmykImage As RasterImage = New RasterImage(RasterMemoryFlags.Conventional, rgbImage.Width, rgbImage.Height, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, Nothing, IntPtr.Zero, 0)

      ' Start the color conversion
      converter.Start(ConversionColorFormat.Cmyk, ConversionColorFormat.Bgr, convParams)

      ' convert the image buffer
      converter.ConvertToImage(cmykBuffer, _
         0, _
         cmykImage, _
         rgbImage.Width, _
         rgbImage.Height, _
         0, _
         CInt(rgbImage.BytesPerLine - (rgbImage.Width * (rgbImage.BitsPerPixel / 8))))

      ' stop the conversion
      converter.Stop()

      ' the output File Name.
      Dim outputFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "ResultImage.bmp")

      ' Save the result image.
      codecs.Save(cmykImage, outputFileName, RasterImageFormat.Bmp, 24)

      ' dispose the used images
      rgbImage.Dispose()
      cmykImage.Dispose()
   Catch ex As Exception
      MessageBox.Show(ex.Message)
   End Try
   ' Shutdown the ColorConversion.
   RasterColorConverterEngine.Shutdown()
End Sub

Public NotInheritable Class LEAD_VARS
Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ColorConversion;

[TestMethod]
public void WhitePointPropertyExample()
{
   // 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 Rgb.
   RasterImage rgbImage = codecs.Load(inputFileName, 24, CodecsLoadByteOrder.Rgb, 1, 1);

   // Image buffer array
   byte[] rgbBuffer = new byte[rgbImage.BytesPerLine * rgbImage.Height];

   // get image buffer
   for(int i = 0; i < rgbImage.Height; i ++)
       rgbImage.GetRow(i, rgbBuffer, i * rgbImage.BytesPerLine, rgbImage.BytesPerLine);

   // Initialize the Cmyk buffer array
   byte[] cmykBuffer = new byte[rgbImage.Height * rgbImage.Width * 4];

   // Initialize a new Converter object
   RasterColorConverterEngine converter = new RasterColorConverterEngine();

   // Initialize a new ConversionParameters new class object.
   ConversionParameters convParams = new ConversionParameters();

   // Initialize the WhitePoint property class.
   ConversionWhitePoint whitePoint = ConversionWhitePoint.Empty;

   // Set the WhitePoint property.
   whitePoint.WhitePoint = ConversionWhitePointType.D50;

   // Set the XWhite property.
   whitePoint.XWhite = 0;

   // Set the YWhite property.
   whitePoint.YWhite = 0;
   convParams.WhitePoint = whitePoint;

   // Set the Quantization property.
   convParams.Quantization = 8;

   // Set the Method property.
   convParams.Method = ConversionMethodFlags.UseBuiltIn;

   // Set the ActiveMethod property.
   convParams.ActiveMethod = ConversionMethodFlags.UseBuiltIn;

   // Set GcrLevel property.
   ConversionCmykParameters cmykParameters = new ConversionCmykParameters();
   cmykParameters.GcrLevel = 150;
   convParams.CmykParameters = cmykParameters;

   // Initialize an image to hold the converted buffer.
   RasterImage cmykImage = null;
   try
   {
      // Start the ColorConversion.
      converter.Start(ConversionColorFormat.Rgb, ConversionColorFormat.Cmyk, convParams);

      // Convert Rgb to CMYK.
      converter.Convert(
          rgbBuffer, 
          0, 
          cmykBuffer, 
          0, 
          rgbImage.Width, 
          rgbImage.Height,
          rgbImage.BytesPerLine - (rgbImage.Width * (rgbImage.BitsPerPixel / 8)),
          0);

      // Stop the ColorConversion.
      converter.Stop();

      // Initialize labImage.
      cmykImage = new RasterImage(RasterMemoryFlags.Conventional, rgbImage.Width, rgbImage.Height, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, null, IntPtr.Zero, 0);

      // Start the color conversion
      converter.Start(ConversionColorFormat.Cmyk, ConversionColorFormat.Bgr, convParams);

      // convert the image buffer
      converter.ConvertToImage(cmykBuffer, // converted buffer
         0, // offset to the beginning of source buffer
         cmykImage, // image to be save
         rgbImage.Width, // pixels width
         rgbImage.Height, // pixels height
         0, // 0 bytes align
         rgbImage.BytesPerLine - (rgbImage.Width * (rgbImage.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 the used images
      rgbImage.Dispose();
      cmykImage.Dispose();
   }
   catch(Exception ex)
   {
      MessageBox.Show(ex.Message);
   }
   // Shutdown the ColorConversion.
   RasterColorConverterEngine.Shutdown();
}

static class LEAD_VARS
{
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}
Requirements

Target Platforms

See Also

Reference

ConversionParameters Class
ConversionParameters Members

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