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WhitePoint Property

Summary

Gets or sets the white point properties.

Syntax
C#
VB
C++
public ConversionWhitePoint WhitePoint { get; set; } 
  
Public Property WhitePoint As ConversionWhitePoint 
public: 
property ConversionWhitePoint WhitePoint { 
   ConversionWhitePoint get(); 
   void set (    ConversionWhitePoint ); 
} 

Property Value

The white point properties.

Example

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

C#
VB
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ColorConversion; 
 
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]; 
 
   rgbImage.Access(); 
   // get image buffer 
   for (int i = 0; i < rgbImage.Height; i++) 
      rgbImage.GetRow(i, rgbBuffer, i * rgbImage.BytesPerLine, rgbImage.BytesPerLine); 
   rgbImage.Release(); 
 
   // 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"; 
} 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ColorConversion 
 
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 
   rgbImage.Access() 
   For i As Integer = 0 To rgbImage.Height - 1 
      rgbImage.GetRow(i, rgbBuffer, (i * rgbImage.BytesPerLine), rgbImage.BytesPerLine) 
   Next 
   rgbImage.Release() 
 
   ' 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 

Requirements

Target Platforms

Help Version 21.0.2020.8.24
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Leadtools.ColorConversion Assembly