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SetParameters Method

Summary
Sets new conversion parameters.
Syntax
C#
VB
C++
public void SetParameters( 
   ConversionParameters parameters 
) 
  
Public Sub SetParameters( _ 
   ByVal parameters As ConversionParameters _ 
)  
public: 
void SetParameters(  
   ConversionParameters^ parameters 
)  

Parameters

parameters
A ConversionParameters object that describes the conversion properties to be set.

Remarks

The parameters parameter should not be null(Nothing). If it is, this method will fail.

Example

This example will convert a CMYK buffer to RGB buffer.

C#
VB
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ColorConversion; 
 
 
public byte[] GetCmykBufferFromImage(RasterImage bgrImage) 
{ 
   // StartUp the ColorConversion. 
   RasterColorConverterEngine.Startup(); 
 
   // 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(); 
   } 
   catch (Exception ex) 
   { 
      MessageBox.Show(ex.Message); 
   } 
 
   RasterColorConverterEngine.Shutdown(); 
 
   return cmykBuffer; 
} 
 
public RasterImage GetImageFromCmykBuffer(byte[] cmykBuffer, int width, int height) 
{ 
   // StartUp the ColorConversion. 
   RasterColorConverterEngine.Startup(); 
 
   // Initialize a new Converter object 
   RasterColorConverterEngine converter = new RasterColorConverterEngine(); 
 
   // Initialize an image to hold the converted buffer. 
   RasterImage cmykImage = null; 
   try 
   { 
      cmykImage = new RasterImage(RasterMemoryFlags.Conventional, width, 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 
         width,   // pixels width 
         height,  // pixels height 
         0,                // 0 bytes align 
         cmykImage.BytesPerLine - (cmykImage.Width * (cmykImage.BitsPerPixel / 8))); 
 
      // stop the conversion 
      converter.Stop(); 
   } 
   catch (Exception ex) 
   { 
      MessageBox.Show(ex.Message); 
   } 
   // Shutdown the ColorConversion. 
   RasterColorConverterEngine.Shutdown(); 
   return cmykImage; 
} 
 
public void SetParametersExample() 
{ 
   // Initialize the RasterCodecs 
   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); 
 
   int width = bgrImage.Width; 
   int height = bgrImage.Height; 
   byte[] cmykBuffer = GetCmykBufferFromImage(bgrImage); 
 
   // Initialize the Rgb buffer array 
   byte[] rgbBuffer = new byte[cmykBuffer.Length - cmykBuffer.Length / 4]; 
 
   // Initialize a new Converter object 
   RasterColorConverterEngine converter = new RasterColorConverterEngine(); 
 
   // Initialize a new ConversionParameters class object. 
   ConversionParameters convParams = new ConversionParameters(); 
 
   // we want to use the built in LEAD ICC conversion method and built in conversion 
   convParams.Method = ConversionMethodFlags.UseBuiltIn | ConversionMethodFlags.UseIcc; 
 
   // set the active conversion method 
   convParams.ActiveMethod = ConversionMethodFlags.UseBuiltIn; 
 
   // Initialize WhitePoint property class. 
   convParams.WhitePoint = new ConversionWhitePoint(); 
 
   // Set WhitePoint property. 
   ConversionWhitePoint whitePoint = new ConversionWhitePoint(); 
   whitePoint.WhitePoint = ConversionWhitePointType.D50; 
   convParams.WhitePoint = whitePoint; 
 
   // Initialize CmykParameters property class. 
   convParams.CmykParameters = new ConversionCmykParameters(); 
 
   // Set GcrLevel property. 
   ConversionCmykParameters cmykParameters = new ConversionCmykParameters(); 
   cmykParameters.GcrLevel = 150; 
   convParams.CmykParameters = cmykParameters; 
 
   try 
   { 
      // Initialize the ColorConversion 
      converter.Start(ConversionColorFormat.Cmyk, ConversionColorFormat.Rgb, convParams); 
 
      // convert the Cmyk buffer to Rgb buffer using Built-in conversion. 
      converter.Convert(cmykBuffer, 
         0, 
         rgbBuffer, 
         0, 
         width, 
         height, 
         0, 
         bgrImage.BytesPerLine - (bgrImage.Width * (bgrImage.BitsPerPixel / 8))); 
 
      // Change the active method for conversion 
      convParams.Method = ConversionMethodFlags.ChangeActiveMethod | ConversionMethodFlags.ChangeCmyk; 
 
      // Switch to ICC conversion method 
      convParams.ActiveMethod = ConversionMethodFlags.UseIcc; 
 
      // Set Mask property. 
      cmykParameters.Mask = ConversionCmykMask.Gcr; 
 
      // Set GcrLevel property. 
      cmykParameters.GcrLevel = 175; 
      convParams.CmykParameters = cmykParameters; 
 
      // Update the conversion parameters 
      converter.SetParameters(convParams); 
 
      // convert the image buffer  
      converter.Convert(cmykBuffer, 0, rgbBuffer, 0, width, height, 0, 0); 
 
      // Stop the ColorConversion 
      converter.Stop(); 
   } 
   catch (Exception ex) 
   { 
      MessageBox.Show(ex.Message); 
      rgbBuffer = null; 
   } 
 
   // the output File Name. 
   string outputFileName = Path.Combine(LEAD_VARS.ImagesDir, "ResultImage.bmp"); 
 
   // Save the converted Image 
   RasterImage cmykImage = GetImageFromCmykBuffer(cmykBuffer, width, height); 
   codecs.Save(cmykImage, outputFileName, RasterImageFormat.Bmp, 24); 
 
   // Shutdown the ColorConversion. 
   RasterColorConverterEngine.Shutdown(); 
 
   // Shutdown the RasterColor 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS21\Resources\Images"; 
} 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ColorConversion 
 
Public Function GetCmykBufferFromImage(ByVal bgrImage As RasterImage) As Byte() 
   ' StartUp the ColorConversion. 
   RasterColorConverterEngine.Startup() 
 
   ' Image buffer array 
   Dim bgrBuffer(bgrImage.BytesPerLine * bgrImage.Height) As Byte 
 
   ' get image buffer 
   Dim i As Integer 
   bgrImage.Access() 
   For i = 0 To bgrImage.Height - 1 
      bgrImage.GetRow(i, bgrBuffer, (i * bgrImage.BytesPerLine), bgrImage.BytesPerLine) 
   Next i 
   bgrImage.Release() 
 
   ' Initialize a new Converter object 
   Dim converter As New RasterColorConverterEngine() 
 
   Dim cmykBuffer(bgrImage.Height * bgrImage.Width * 4) As Byte 
 
   Try 
      ' Start the color conversion 
      converter.Start(ConversionColorFormat.Bgr, ConversionColorFormat.Cmyk, Nothing) 
 
      ' convert the image buffer  
      converter.Convert(bgrBuffer, 
         0, 
         cmykBuffer, 
         0, 
         bgrImage.Width, 
         bgrImage.Height, 
         CInt(bgrImage.BytesPerLine - (bgrImage.Width * (bgrImage.BitsPerPixel / 8))), 
         0) 
 
      ' stop the conversion 
      converter.Stop() 
   Catch ex As Exception 
      MessageBox.Show(ex.Message) 
   End Try 
 
   RasterColorConverterEngine.Shutdown() 
 
   Return cmykBuffer 
End Function 
 
Public Function GetImageFromCmykBuffer(ByVal cmykBuffer As Byte(), ByVal width As Integer, ByVal height As Integer) As RasterImage 
   ' StartUp the ColorConversion. 
   RasterColorConverterEngine.Startup() 
 
   ' Initialize a new Converter object 
   Dim Converter As New RasterColorConverterEngine() 
 
   ' Initialize an image to hold the converted buffer. 
   Dim cmykImage As RasterImage = Nothing 
   Try 
      cmykImage = New RasterImage(RasterMemoryFlags.Conventional, width, height, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, Nothing, IntPtr.Zero, 0) 
 
      ' Start the color conversion 
      Converter.Start(ConversionColorFormat.Cmyk, ConversionColorFormat.Bgr, Nothing) 
 
      ' convert the image buffer 
      Converter.ConvertToImage(cmykBuffer, 
         0, 
         cmykImage, 
         width, 
         height, 
         0, 
         CInt(cmykImage.BytesPerLine - (cmykImage.Width * (cmykImage.BitsPerPixel / 8)))) 
 
      ' stop the conversion 
      Converter.Stop() 
   Catch ex As Exception 
      MessageBox.Show(ex.Message) 
   End Try 
 
   ' Shutdown the ColorConversion. 
   RasterColorConverterEngine.Shutdown() 
   Return cmykImage 
End Function 
 
Public Sub SetParametersExample() 
   ' StartUp the RasterCodecs. 
   Dim codecs As 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 Bgr. 
   Dim bgrImage As RasterImage = codecs.Load(inputFileName, 24, CodecsLoadByteOrder.Bgr, 1, 1) 
 
   Dim width As Integer = bgrImage.Width 
   Dim height As Integer = bgrImage.Height 
   Dim cmykBuffer() As Byte = GetCmykBufferFromImage(bgrImage) 
 
   ' Initialize the Rgb buffer array 
   Dim rgbBuffer(CInt(cmykBuffer.Length - cmykBuffer.Length / 4)) As Byte 
 
   ' Initialize a new Converter object 
   Dim converter As New RasterColorConverterEngine 
 
   ' Initialize a new ConversionParameters class object. 
   Dim convParams As ConversionParameters = New ConversionParameters 
 
   ' we want to use the built in LEAD ICC conversion method and built in conversion 
   convParams.Method = ConversionMethodFlags.UseBuiltIn Or ConversionMethodFlags.UseIcc 
 
   ' set the active conversion method 
   convParams.ActiveMethod = ConversionMethodFlags.UseBuiltIn 
 
   ' Initialize WhitePoint property class. 
   convParams.WhitePoint = New ConversionWhitePoint 
 
   ' Set WhitePoint property. 
   Dim whitePoint As ConversionWhitePoint 
   whitePoint.WhitePoint = ConversionWhitePointType.D50 
   convParams.WhitePoint = whitePoint 
 
   ' Initialize CmykParameters property class. 
   convParams.CmykParameters = New ConversionCmykParameters 
 
   ' Set GcrLevel property. 
   Dim cmykParameters As ConversionCmykParameters 
   cmykParameters.GcrLevel = 150 
   convParams.CmykParameters = cmykParameters 
 
   Try 
      ' Initialize the ColorConversion 
      converter.Start(ConversionColorFormat.Cmyk, ConversionColorFormat.Rgb, convParams) 
 
      ' convert the Cmyk buffer to Rgb buffer using Built-in conversion. 
      converter.Convert(cmykBuffer, 
         0, 
         rgbBuffer, 
         0, 
         width, 
         height, 
         0, 
         CInt(bgrImage.BytesPerLine - (bgrImage.Width * (bgrImage.BitsPerPixel / 8)))) 
 
      ' Change the active method for conversion 
      convParams.Method = ConversionMethodFlags.ChangeActiveMethod Or ConversionMethodFlags.ChangeCmyk 
 
      ' Switch to ICC conversion method 
      convParams.ActiveMethod = ConversionMethodFlags.UseIcc 
 
      ' Set Mask property. 
      cmykParameters.Mask = ConversionCmykMask.Gcr 
 
      ' Set GcrLevel property. 
      cmykParameters.GcrLevel = 175 
      convParams.CmykParameters = cmykParameters 
 
      ' Update the conversion parameters 
      converter.SetParameters(convParams) 
 
      ' convert the image buffer  
      converter.Convert(cmykBuffer, 
      0, 
      rgbBuffer, 
      0, 
      width, 
      height, 
      0, 
      CInt(bgrImage.BytesPerLine - (bgrImage.Width * (bgrImage.BitsPerPixel / 8)))) 
 
      ' Stop the ColorConversion 
      converter.Stop() 
   Catch ex As Exception 
      MessageBox.Show(ex.Message) 
      rgbBuffer = Nothing 
   End Try 
 
   ' the output File Name. 
   Dim outputFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "ResultImage.bmp") 
 
   ' Save the converted Image 
   Dim cmykImage As RasterImage = GetImageFromCmykBuffer(cmykBuffer, width, height) 
   codecs.Save(cmykImage, outputFileName, RasterImageFormat.Bmp, 24) 
 
   ' Shutdown the ColorConversion. 
   RasterColorConverterEngine.Shutdown() 
 
   ' Shutdown the RasterCodecs 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\LEADTOOLS21\Resources\Images" 
End Class 
Requirements

Target Platforms

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Leadtools.ColorConversion Assembly