For more information, refer to Changing Brightness and Contrast.
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;
Histogram Contrast Function - Before
Histogram Contrast Function - After
View additional platform support for this Histogram Contrast function.
Run the HistogramContrastCommand on an image and increase its contrast.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Color;
public void HistogramContrastCommandExample()
{
// Load an image
RasterCodecs codecs = new RasterCodecs();
codecs.ThrowExceptionsOnInvalidImages = true;
RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "IMAGE1.CMP"));
// Prepare the command
HistogramContrastCommand command = new HistogramContrastCommand();
//Increase the contrast using the histogram 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:\LEADTOOLS23\Resources\Images";
}
HistogramContrastCommand Members
Leadtools.ImageProcessing.Color Namespace
Changing Brightness and Contrast
HistogramEqualizeCommand Class
Leadtools.ImageProcessing.FillCommand
Leadtools.ImageProcessing.Core.WindowLevelCommand
Leadtools.ImageProcessing.Effects.DeinterlaceCommand
Leadtools.ImageProcessing.Effects.EdgeDetectStatisticalCommand
Leadtools.ImageProcessing.Effects.SmoothEdgesCommand
LocalHistogramEqualizeCommand Class
Leadtools.ImageProcessing.Core.CorrelationListCommand
GrayScaleToDuotoneCommand Class
GrayScaleToMultitoneCommand Class
Leadtools.ImageProcessing.Core.HolePunchRemoveCommand
Leadtools.ImageProcessing.Effects.SkeletonCommand
ChangeHueSaturationIntensityCommand Class
MathematicalFunctionCommand Class
ApplyMathematicalLogicCommand Class
ColorIntensityBalanceCommand Class
Leadtools.ImageProcessing.Core.ColorizeGrayCommand
ContrastBrightnessIntensityCommand Class
Leadtools.ImageProcessing.Core.DigitalSubtractCommand
Leadtools.ImageProcessing.Effects.EdgeDetectEffectCommand
Leadtools.ImageProcessing.SpecialEffects.FunctionalLightCommand
Leadtools.ImageProcessing.Core.MultiscaleEnhancementCommand
Leadtools.ImageProcessing.Core.SelectDataCommand