![](dotnetdiagramimages/Leadtools_ImageProcessing_Effects_Leadtools_ImageProcessing_Effects_UnsharpMaskCommand.png)
Visual Basic (Declaration) | |
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Public Class UnsharpMaskCommand Inherits Leadtools.ImageProcessing.RasterCommand Implements IRasterCommand |
Visual Basic (Usage) | ![]() |
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Dim instance As UnsharpMaskCommand |
C# | |
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public class UnsharpMaskCommand : Leadtools.ImageProcessing.RasterCommand, IRasterCommand |
C++/CLI | |
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public ref class UnsharpMaskCommand : public Leadtools.ImageProcessing.RasterCommand, IRasterCommand |
Run the Leadtools.ImageProcessing.Effects.UnsharpMaskCommand on an image.
Visual Basic | ![]() |
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Public Sub UnsharpMaskCommandExample() 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 UnsharpMaskCommand = New UnsharpMaskCommand command.Amount = 200 command.Radius = 15 command.Threshold = 50 command.ColorType = UnsharpMaskCommandColorType.Rgb command.Run(leadImage) codecs.Save(leadImage, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24) End Sub Public NotInheritable Class LEAD_VARS Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" End Class |
C# | ![]() |
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public void UnsharpMaskCommandExample() { // Load an image RasterCodecs codecs = new RasterCodecs(); codecs.ThrowExceptionsOnInvalidImages = true; RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg")); // Prepare the command UnsharpMaskCommand command = new UnsharpMaskCommand(); command.Amount = 200; command.Radius = 15; command.Threshold = 50; command.ColorType = UnsharpMaskCommandColorType.Rgb; command.Run(image); } static class LEAD_VARS { public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; } |
SilverlightCSharp | ![]() |
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public void UnsharpMaskCommandExample(RasterImage image, Stream outStream) { // Prepare the command UnsharpMaskCommand command = new UnsharpMaskCommand(); command.Amount = 200; command.Radius = 15; command.Threshold = 50; command.ColorType = UnsharpMaskCommandColorType.Rgb; command.Run(image); // Save result image RasterCodecs codecs = new RasterCodecs(); codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24); image.Dispose(); } |
SilverlightVB | ![]() |
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Public Sub UnsharpMaskCommandExample(ByVal image As RasterImage, ByVal outStream As Stream) ' Prepare the command Dim command As UnsharpMaskCommand = New UnsharpMaskCommand() command.Amount = 200 command.Radius = 15 command.Threshold = 50 command.ColorType = UnsharpMaskCommandColorType.Rgb command.Run(image) ' Save result image Dim codecs As RasterCodecs = New RasterCodecs() codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24) image.Dispose() End Sub |
- This command is actually considered a sharpening method. It is used to sharpen the image with a minimum of noise. To reduce the noise, it starts by blurring a copy of the original image. The amount of blur depends on Radius. The method then determines the difference between each pixel's value of the original image and the corresponding pixel's value in the blurred image. If the difference is greater than the threshold value, then the difference between the pixel values is multiplied by the amount value and added to the original pixel value.
- To increase the thickness of the sharpened edges, increase the radius value.
- To increase the amount of sharpness, increase the amount value.
- To reduce the noise and eliminate the small edges or individual pixels that will produce noise in image, increase the threshold value.
- Using the Yuv color space decreases the processing time.
- This command supports 12 and 16-bit grayscale and 48 and 64-bit color images. Support for 12 and 16-bit grayscale and 48 and 64-bit color images is available only in the Document/Medical toolkits.
- This command does not support 32-bit grayscale images.
System.Object
Leadtools.ImageProcessing.RasterCommand
Leadtools.ImageProcessing.Effects.UnsharpMaskCommand
Target Platforms: Silverlight 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only)
Reference
UnsharpMaskCommand MembersLeadtools.ImageProcessing.Effects Namespace
Detecting and Enhancing Edges and Lines
SharpenCommand Class
Leadtools.ImageProcessing.Color.PosterizeCommand
MosaicCommand Class
EmbossCommand Class
Leadtools.ImageProcessing.Core.MedianCommand
AddNoiseCommand Class
Leadtools.ImageProcessing.Color.IntensityDetectCommand
SpatialFilterCommand Class
BinaryFilterCommand Class
Leadtools.ImageProcessing.Core.MinimumCommand
Leadtools.ImageProcessing.Core.MaximumCommand
OilifyCommand Class
Leadtools.ImageProcessing.Color.SolarizeCommand
Leadtools.ImageProcessing.Core.WindowLevelCommand
GaussianCommand Class
Leadtools.ImageProcessing.SpecialEffects.BricksTextureCommand
Leadtools.ImageProcessing.Core.DeskewCommand
Leadtools.ImageProcessing.SpecialEffects.DiffuseGlowCommand
Leadtools.ImageProcessing.SpecialEffects.GlowCommand
Leadtools.ImageProcessing.Core.HalfTonePatternCommand
HighPassCommand Class
MaskConvolutionCommand Class
Leadtools.ImageProcessing.SpecialEffects.PerspectiveCommand
Leadtools.ImageProcessing.SpecialEffects.PlasmaCommand
Leadtools.ImageProcessing.SpecialEffects.PointillistCommand