Initializes a new
Leadtools.ImageProcessing.Core.SubtractBackgroundCommand class object with explicit parameters.
Supported in Silverlight, Windows Phone 7
Syntax
Parameters
- rollingBall
- The radius (in pixels) of the ball that will roll over the entire image to determine the background. Recommended value is 50. This parameter only accepts positive values.
- shrinkingSize
- Shrink size ratio used to minimize the image internally in order to increase the speed with little loss of accuracy.
- brightnessFactor
- Brightness factor for increasing or decreasing the brightness of the image. Valid values range from 0 - 400. If you pass 100 the brightness remains unchanged. Lower values darken the image while higher values lighten the image.
- flags
- Flags that indicate whether the background is darker than the foreground, and whether to show the objects without the background. You must select one from each group.
Example
Run the Leadtools.ImageProcessing.Core.SubtractBackgroundCommand on an image.
Visual Basic | Copy Code |
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Public Sub SubtractBackgroundConstructorExample()
Dim codecs As New RasterCodecs()
codecs.ThrowExceptionsOnInvalidImages = True
Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg"))
' Prepare the command
Dim command As SubtractBackgroundCommand = New SubtractBackgroundCommand(50, SubtractBackgroundCommandType.DependOnRollingBallSize, 100, SubtractBackgroundCommandFlags.BackgroundIsDarker)
' Apply Subtract Background effect on the image.
command.Run(leadImage)
End Sub
Public NotInheritable Class LEAD_VARS
Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class |
C# | Copy Code |
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public void SubtractBackgroundConstructorExample()
{
// Load an image
RasterCodecs codecs = new RasterCodecs();
codecs.ThrowExceptionsOnInvalidImages = true;
RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg"));
// Prepare the command
SubtractBackgroundCommand command = new SubtractBackgroundCommand(50, SubtractBackgroundCommandType.DependOnRollingBallSize, 100, SubtractBackgroundCommandFlags.BackgroundIsDarker);
// Apply Subtract Background effect on the image.
command.Run(image);
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
} |
SilverlightCSharp | Copy Code |
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public void SubtractBackgroundConstructorExample(RasterImage image, Stream outStream)
{
// Prepare the command
SubtractBackgroundCommand command = new SubtractBackgroundCommand(50, SubtractBackgroundCommandType.DependOnRollingBallSize, 100, SubtractBackgroundCommandFlags.BackgroundIsDarker);
// Apply Subtract Background effect on the image.
command.Run(image);
// Save result image
RasterCodecs codecs = new RasterCodecs();
codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24);
image.Dispose();
} |
SilverlightVB | Copy Code |
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Public Sub SubtractBackgroundConstructorExample(ByVal image As RasterImage, ByVal outStream As Stream)
' Prepare the command
Dim command As SubtractBackgroundCommand = New SubtractBackgroundCommand(50, SubtractBackgroundCommandType.DependOnRollingBallSize, 100, SubtractBackgroundCommandFlags.BackgroundIsDarker)
' Apply Subtract Background effect on the image.
command.Run(image)
' Save result image
Dim codecs As RasterCodecs = New RasterCodecs()
codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24)
image.Dispose()
End Sub |
Requirements
Target Platforms: Silverlight 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only)
See Also