![](dotnetdiagramimages/Leadtools_ImageProcessing_Color_Leadtools_ImageProcessing_Color_ChangeContrastCommand.png)
Visual Basic (Declaration) | |
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Public Class ChangeContrastCommand Inherits Leadtools.ImageProcessing.RasterCommand Implements IRasterCommand |
Visual Basic (Usage) | ![]() |
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Dim instance As ChangeContrastCommand |
C# | |
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public class ChangeContrastCommand : Leadtools.ImageProcessing.RasterCommand, IRasterCommand |
C++/CLI | |
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public ref class ChangeContrastCommand : public Leadtools.ImageProcessing.RasterCommand, IRasterCommand |
Runs the Leadtools.ImageProcessing.Color.ChangeContrastCommand on an image and increases its contrast.
Visual Basic | ![]() |
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Public Sub ChangeContrastCommandExample() 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 ChangeContrastCommand = New ChangeContrastCommand 'Increase the contrast by 25 percent of the possible range. command.Contrast = 250 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 ChangeContrastCommandExample() { // Load an image RasterCodecs codecs = new RasterCodecs(); codecs.ThrowExceptionsOnInvalidImages = true; RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg")); // Prepare the command ChangeContrastCommand command = new ChangeContrastCommand(); //Increase the contrast by 25 percent of the possible range. command.Contrast = 250; command.Run(image); codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24); } static class LEAD_VARS { public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; } |
SilverlightCSharp | ![]() |
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public void ChangeContrastCommandExample(RasterImage image, Stream outStream) { // Prepare the command ChangeContrastCommand command = new ChangeContrastCommand(); //Increase the contrast by 25 percent of the possible range. command.Contrast = 250; 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 ChangeContrastCommandExample(ByVal image As RasterImage, ByVal outStream As Stream) ' Prepare the command Dim command As ChangeContrastCommand = New ChangeContrastCommand() 'Increase the contrast by 25 percent of the possible range. command.Contrast = 250 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 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.
If the image has a LUT and you want to work on the image data, set RasterImage.UseLookupTable to false. Then, after calling the method, reset the UselookupTable property to true, as follows:
rasterImage.UseLookupTable = false; Method(rasterImage); rasterImage.UseLookupTable = true;For more information, refer to Changing Brightness and Contrast.
System.Object
Leadtools.ImageProcessing.RasterCommand
Leadtools.ImageProcessing.Color.ChangeContrastCommand
Target Platforms: Silverlight, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only)
Reference
ChangeContrastCommand MembersLeadtools.ImageProcessing.Color Namespace
Changing Brightness and Contrast
ChangeIntensityCommand Class
GammaCorrectCommand Class
HistogramContrastCommand Class
StretchIntensityCommand Class
RemapIntensityCommand Class
InvertCommand Class
ChangeHueCommand Class
ChangeSaturationCommand Class
HistogramEqualizeCommand Class
Leadtools.ImageProcessing.FillCommand
HistogramCommand Class
Leadtools.ImageProcessing.Core.WindowLevelCommand
ChannelMixerCommand Class
Leadtools.ImageProcessing.Effects.DeinterlaceCommand
DesaturateCommand Class
LightControlCommand Class
Leadtools.ImageProcessing.Effects.SmoothEdgesCommand
LocalHistogramEqualizeCommand Class
AddWeightedCommand Class
ColorMergeCommand Class
ColorSeparateCommand Class
MultiplyCommand Class
AutoColorLevelCommand Class
ColorLevelCommand Class
Leadtools.ImageProcessing.Core.CorrelationListCommand
GrayScaleToDuotoneCommand Class
GrayScaleToMultitoneCommand Class
Leadtools.ImageProcessing.Core.HolePunchRemoveCommand
SelectiveColorCommand Class
Leadtools.ImageProcessing.Effects.SkeletonCommand
ChangeHueSaturationIntensityCommand Class
ColorReplaceCommand Class
ColorThresholdCommand Class
MathematicalFunctionCommand Class
SegmentCommand Class
AdaptiveContrastCommand Class
ApplyMathematicalLogicCommand Class
ColorIntensityBalanceCommand Class
Leadtools.ImageProcessing.Core.ColorizeGrayCommand
ContrastBrightnessIntensityCommand Class
Leadtools.ImageProcessing.Core.DigitalSubtractCommand
DynamicBinaryCommand Class
Leadtools.ImageProcessing.SpecialEffects.FunctionalLightCommand
Leadtools.ImageProcessing.Core.MultiscaleEnhancementCommand
Leadtools.ImageProcessing.Core.SelectDataCommand
Leadtools.ImageProcessing.Core.ShiftDataCommand
AdjustTintCommand Class
GammaCorrectCommand Class