RasterImageConverter Class

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

public static class RasterImageConverter

'Declaration
 
Public MustInherit NotInheritable Class RasterImageConverter

'Usage
 
Dim instance As RasterImageConverter

public sealed static class RasterImageConverter

function Leadtools.Windows.Media.RasterImageConverter()

public ref class RasterImageConverter abstract sealed

The LEADTOOLS RasterImage class provides platform independent representation of an image. It serves as a working area for image manipulation and conversion. LEADTOOLS functions use this class for accessing the image in memory and for maintaining the characteristics of the image. This class contains the functionality needed to convert a LEADTOOLS Leadtools.RasterImage to and from a Windows Presentation Foundation (WPF) or Silverlight image objects.

The RasterImageConverter class contains the following functionality:

Method	Description
ConvertToSource	Converts a LEADTOOLS Leadtools.RasterImage to WPF/Silverlight System.Windows.Media.ImageSource
ConvertFromSource	Converts a WPF/Silverlight System.Windows.Media.ImageSource to LEADTOOLS Leadtools.RasterImage
TestCompatible	Utility methods for testing whether a LEADTOOLS Leadtools.RasterImage is WPF/Silverlight compatible

For more information refer to RasterImage and WPF/Silverlight.

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Public Sub RasterImageConverterExample()
      Dim srcFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp")
      Dim destFileName1 As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.jpg")
      Dim destFileName2 As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1_WPfFlipped.jpg")

      ' Use LEADTOOLS to convert the source image to a format that can be loaded with WPF
      Using codecs As New RasterCodecs()
         codecs.Convert(srcFileName, destFileName1, RasterImageFormat.Jpeg, 0, 0, 0, Nothing)
      End Using

      ' Load the source image using WPF
      Dim bitmap As New BitmapImage()
      bitmap.BeginInit()
      bitmap.UriSource = New Uri(destFileName1, UriKind.Absolute)
      bitmap.EndInit()

      Console.WriteLine("Source WPF image is loaded, pixel format is {0}", bitmap.Format)

      ' Convert the image to LEADTOOLS RasterImage object
      Dim source As BitmapSource
      Using raster As RasterImage = RasterImageConverter.ConvertFromSource(bitmap, ConvertFromSourceOptions.None)
         Console.WriteLine("Converted to RasterImage, bits/pixel is {0} and order is {1}", raster.BitsPerPixel, raster.Order)

         ' Perform image processing on the raster image using LEADTOOLS
         Dim cmd As New FlipCommand(False)
         cmd.Run(raster)

         ' Convert the image back to WPF using default options
         source = DirectCast(RasterImageConverter.ConvertToSource(raster, ConvertToSourceOptions.None), BitmapSource)
      End Using

      Console.WriteLine("Converted back WPF, pixel format is {0}", source.Format)

      ' Save the image using WPF
      Using fs As FileStream = File.Create(destFileName2)
         Dim encoder As New JpegBitmapEncoder()
         encoder.QualityLevel = 30
         encoder.Frames.Add(BitmapFrame.Create(source))
         encoder.Save(fs)
      End Using
   End Sub

Public NotInheritable Class LEAD_VARS
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class

public void RasterImageConverterExample()
   {
      string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp");
      string destFileName1 = Path.Combine(LEAD_VARS.ImagesDir,"Image1.jpg");
      string destFileName2 = Path.Combine(LEAD_VARS.ImagesDir, "Image1_WPfFlipped.jpg");

      // Use LEADTOOLS to convert the source image to a format that can be loaded with WPF
      using(RasterCodecs codecs = new RasterCodecs())
      {
         codecs.Convert(srcFileName, destFileName1, RasterImageFormat.Jpeg, 0, 0, 0, null);
      }

      // Load the source image using WPF
      BitmapImage bitmap = new BitmapImage();
      bitmap.BeginInit();
      bitmap.UriSource = new Uri(destFileName1, UriKind.Absolute);
      bitmap.EndInit();

      Console.WriteLine("Source WPF image is loaded, pixel format is {0}", bitmap.Format);

      // Convert the image to LEADTOOLS RasterImage object
      BitmapSource source;
      using(RasterImage raster = RasterImageConverter.ConvertFromSource(bitmap, ConvertFromSourceOptions.None))
      {
         Console.WriteLine("Converted to RasterImage, bits/pixel is {0} and order is {1}", raster.BitsPerPixel, raster.Order);

         // Perform image processing on the raster image using LEADTOOLS
         FlipCommand cmd = new FlipCommand(false);
         cmd.Run(raster);

         // Convert the image back to WPF using default options
         source = RasterImageConverter.ConvertToSource(raster, ConvertToSourceOptions.None) as BitmapSource;
      }

      Console.WriteLine("Converted back WPF, pixel format is {0}", source.Format);

      // Save the image using WPF
      using(FileStream fs = File.Create(destFileName2))
      {
         JpegBitmapEncoder encoder = new JpegBitmapEncoder();
         encoder.QualityLevel = 30;
         encoder.Frames.Add(BitmapFrame.Create(source));
         encoder.Save(fs);
      }
   }

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

public void RasterImageConverterExample()
{
   string srcFileName = LeadtoolsExamples.Common.ImagesPath.Path + "Image1.cmp";
   string destFileName1 = LeadtoolsExamples.Common.ImagesPath.Path + "Image1.jpg";

   // Use LEADTOOLS to convert the source image to a format that can be loaded with WPF
   RasterCodecs codecs = new RasterCodecs();
   codecs.Convert(srcFileName, destFileName1, RasterImageFormat.Jpeg, 0, 0, 0, null);
}

<TestMethod> _
Public Sub RasterImageConverterExample()
   Dim srcFileName As String = LeadtoolsExamples.Common.ImagesPath.Path & "Image1.cmp"
   Dim destFileName1 As String = LeadtoolsExamples.Common.ImagesPath.Path & "Image1.jpg"
   ' Use LEADTOOLS to convert the source image to a format that can be loaded with WPF
   Dim codecs As RasterCodecs = New RasterCodecs()
   codecs.Convert(srcFileName, destFileName1, RasterImageFormat.Jpeg, 0, 0, 0, Nothing)
End Sub

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

RasterImageConverter Members
Leadtools.Windows.Media Namespace