ConvertFromSource Method

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

public static RasterImage ConvertFromSource( 
   ImageSource image,
   ConvertFromSourceOptions options
)

'Declaration
 
Public Shared Function ConvertFromSource( _
   ByVal image As ImageSource, _
   ByVal options As ConvertFromSourceOptions _
) As RasterImage

'Usage
 
Dim image As ImageSource
Dim options As ConvertFromSourceOptions
Dim value As RasterImage
 
value = RasterImageConverter.ConvertFromSource(image, options)

public static RasterImage ConvertFromSource( 
   ImageSource image,
   ConvertFromSourceOptions options
)

 function Leadtools.Windows.Media.RasterImageConverter.ConvertFromSource( 
   image ,
   options 
)

public:
static RasterImage^ ConvertFromSource( 
   ImageSource^ image,
   ConvertFromSourceOptions options
)

Parameters

image: The System.Windows.Media.ImageSource object containing the image data to convert.
options: Options to control the conversion operation. Currently there are no extra options and the value of this parameter must be set to ConvertFromSourceOptions.None

Return Value

A Leadtools.RasterImage object representing the converted image.

Microsoft Windows Presentation Foundations (WPF)

LEADTOOLS and WPF support different pixel formats. These pixel formats may not be identical in some cases. The conversion process takes care of converting scanlines to a suitable format that best matches the source data. The following table shows the result bits/pixel byte order achieved when passing images with different pixel format values:

Source PixelFormat	Result Bits/Pixel and byte order
System.Windows.Media.PixelFormats.Bgr101010	24 bits/pixel and RasterByteOrder.Bgr
System.Windows.Media.PixelFormats.Bgr24	24 bits/pixel and RasterByteOrder.Bgr
System.Windows.Media.PixelFormats.Bgr32	32 bits/pixel and RasterByteOrder.Bgr
System.Windows.Media.PixelFormats.Bgr555	16 bits/pixel and RasterByteOrder.Bgr
System.Windows.Media.PixelFormats.Bgr565	24 bits/pixel and RasterByteOrder.Bgr
System.Windows.Media.PixelFormats.BlackWhite	1 bits/pixel and RasterByteOrder.Rgb with a black on white palette
System.Windows.Media.PixelFormats.Cmyk32	24 bits/pixel and RasterByteOrder.Bgr
System.Windows.Media.PixelFormats.Gray16	16 bits/pixel and RasterByteOrder.Gray
System.Windows.Media.PixelFormats.Gray2	2 bits/pixel and RasterByteOrder.Rgb with a palette containing 2 shades of gray
System.Windows.Media.PixelFormats.Gray32Float	24 bits/pixel and RasterByteOrder.Bgr
System.Windows.Media.PixelFormats.Gray4	4 bits/pixel and RasterByteOrder.Rgb with a palette containing 16 shades of gray
System.Windows.Media.PixelFormats.Gray8	8 bits/pixel and RasterByteOrder.Rgb with a palette containing 256 shades of gray
System.Windows.Media.PixelFormats.Indexed1	1 bits/pixel and RasterByteOrder.Rgb with corresponding palette
System.Windows.Media.PixelFormats.Indexed2	2 bits/pixel and RasterByteOrder.Rgb with corresponding palette
System.Windows.Media.PixelFormats.Indexed4	4 bits/pixel and RasterByteOrder.Rgb with corresponding palette
System.Windows.Media.PixelFormats.Indexed8	8 bits/pixel and RasterByteOrder.Rgb with corresponding palette
System.Windows.Media.PixelFormats.Pbgra32	32 bits/pixel and RasterByteOrder.Bgr
System.Windows.Media.PixelFormats.Prgba128Float	24 bits/pixel and RasterByteOrder.Bgr
System.Windows.Media.PixelFormats.Rgb24	24 bits/pixel and RasterByteOrder.Rgb
System.Windows.Media.PixelFormats.Rgb48	48 bits/pixel and RasterByteOrder.Rgb
System.Windows.Media.PixelFormats.Rgb128Float	24 bits/pixel and RasterByteOrder.Rgb
System.Windows.Media.PixelFormats.Rgba64	64 bits/pixel and RasterByteOrder.Rgb

Microsoft Silverlight

Microsoft Silverlight currently offers support for 32-bits/pixels only. So the result from this method will always be a Leadtools.RasterImage object with RasterImage.BitsPerPixel equals to 32.

Use the ConvertToSource method to convert LEADTOOLS Leadtools.RasterImage to a WPF/Silverlight System.Windows.Media.ImageSource object.

The conversion works by copying the image data over to the new destination. Currently, there is no support for sharing memory between a Leadtools.RasterImage and an System.Windows.Media.ImageSource.

For more information refer to RasterImage and WPF/Silverlight.

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

Copy Code

Private Sub ConvertFromSourceExample(ByVal imageControl As System.Windows.Controls.Image)
   ' Get the WPF/Silverlight source image in the Image control
   Dim source As ImageSource = imageControl.Source
   ' Convert it to a LEADTOOLS RasterImage
   Using rasterImage As RasterImage = RasterImageConverter.ConvertFromSource(source, ConvertFromSourceOptions.None)
      ' Now, use LEADTOOLS to Invert the image
      Dim cmd As New InvertCommand()
      cmd.Run(rasterImage)

      ' Convert the back to WPF/Silverlight
      source = RasterImageConverter.ConvertToSource(rasterImage, ConvertToSourceOptions.None)

      ' Set it back into the Image control
      imageControl.Source = source
   End Using
End Sub

private void ConvertFromSourceExample(System.Windows.Controls.Image imageControl)
{
   // Get the WPF/Silverlight source image in the Image control
   ImageSource source = imageControl.Source;
   // Convert it to a LEADTOOLS RasterImage
   using(RasterImage rasterImage = RasterImageConverter.ConvertFromSource(source, ConvertFromSourceOptions.None))
   {
      // Now, use LEADTOOLS to Invert the image
      Leadtools.ImageProcessing.Color.InvertCommand cmd = new Leadtools.ImageProcessing.Color.InvertCommand();
      cmd.Run(rasterImage);

      // Convert the back to WPF/Silverlight
      source = RasterImageConverter.ConvertToSource(rasterImage, ConvertToSourceOptions.None);

      // Set it back into the Image control
      imageControl.Source = source;
   }
}

private void ConvertFromSourceExample(System.Windows.Controls.Image imageControl)
{
   // Get the WPF/Silverlight source image in the Image control
   ImageSource source = imageControl.Source;
   // Convert it to a LEADTOOLS RasterImage
   using(RasterImage rasterImage = RasterImageConverter.ConvertFromSource(source, ConvertFromSourceOptions.None))
   {
      // Now, use LEADTOOLS to Invert the image
      Leadtools.ImageProcessing.Color.InvertCommand cmd = new Leadtools.ImageProcessing.Color.InvertCommand();
      cmd.Run(rasterImage);

      // Convert the back to WPF/Silverlight
      source = RasterImageConverter.ConvertToSource(rasterImage, ConvertToSourceOptions.None);

      // Set it back into the Image control
      imageControl.Source = source;
   }
}

Private Sub ConvertFromSourceExample(ByVal imageControl As System.Windows.Controls.Image)
   ' Get the WPF/Silverlight source image in the Image control
   Dim source As ImageSource = imageControl.Source
   ' Convert it to a LEADTOOLS RasterImage
   Using rasterImage As RasterImage = RasterImageConverter.ConvertFromSource(source, ConvertFromSourceOptions.None)
      ' Now, use LEADTOOLS to Invert the image
      Dim cmd As InvertCommand = New InvertCommand()
      cmd.Run(rasterImage)

      ' Convert the back to WPF/Silverlight
      source = RasterImageConverter.ConvertToSource(rasterImage, ConvertToSourceOptions.None)

      ' Set it back into the Image control
      imageControl.Source = source
   End Using
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 Class
RasterImageConverter Members