Converts a 1-bit, 4-bit, 8-bit, 16-bit, 24-bit, or 32-bit RasterImage to an 8-bit, 12-bit, or 16-bit grayscale image.
public class CreateGrayscaleImageCommand : RasterCommand
Public Class CreateGrayscaleImageCommand
Inherits RasterCommand
@interface LTCreateGrayScaleImageCommand : LTRasterCommand
public class CreateGrayscaleImageCommand extends RasterCommand
public ref class CreateGrayscaleImageCommand : public RasterCommand
The CreateGrayscaleImageCommand command works by creating a new image in the DestinationImage property from the image passed to the Run method.
The destination image will have either 8, 12, or 16 bits/pixel grayscale values.
When converting to 12-bit or 16-bit grayscale, a Lookup table (LUT) is not used. When converting to 8-bit grayscale, a LUT is used to get the RGB for each input pixel. The grayscale value corresponding to that RGB triple is used in the destination image
LowBit and HighBit are used when converting to 12-bit or 16-bit grayscale, So the appropriate values must set before calling the Run method.
This command does not support 32-bit grayscale images.
This command does not support signed images.
This example loads an image and changes it to 16-bit grayscale.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using LeadtoolsExamples.Common;
public void CreateGrayscaleImageCommandExample()
{
RasterCodecs codecs = new RasterCodecs();
string srcFileName = Path.Combine(ImagesPath.Path, "Image1.cmp");
string destFileName = Path.Combine(ImagesPath.Path, "Image1_CreateGrayscaleImage.bmp");
// Load the source image from disk
RasterImage srcImage = codecs.Load(srcFileName);
// Create a grayscale image
CreateGrayscaleImageCommand cmd = new CreateGrayscaleImageCommand();
cmd.BitsPerPixel = 16;
cmd.LowBit = 0;
cmd.HighBit = 15;
cmd.Run(srcImage);
RasterImage destImage = cmd.DestinationImage;
// Save the image to disk
codecs.Save(
destImage,
destFileName,
RasterImageFormat.Bmp,
16);
// Clean up
destImage.Dispose();
srcImage.Dispose();
codecs.Dispose();
}
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing
Public Sub CreateGrayscaleImageCommandExample()
Dim codecs As New RasterCodecs()
Dim srcFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp")
Dim destFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1_CreateGrayscaleImage.bmp")
' Load the source image from disk
Dim srcImage As RasterImage = codecs.Load(srcFileName)
' Create a grayscale image
Dim cmd As New CreateGrayscaleImageCommand()
cmd.BitsPerPixel = 16
cmd.LowBit = 0
cmd.HighBit = 15
cmd.Run(srcImage)
Dim destImage As RasterImage = cmd.DestinationImage
' Save the image to disk
codecs.Save(
destImage,
destFileName,
RasterImageFormat.Bmp,
16)
' Clean up
destImage.Dispose()
srcImage.Dispose()
End Sub
Public NotInheritable Class LEAD_VARS
Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class
c#[Silverlight C# Example]
using Leadtools;
using Leadtools.Codecs;
using Leadtools.Examples;
using Leadtools.ImageProcessing;
using Leadtools.Windows.Media;
public void CreateGrayscaleImageCommandExample(RasterImage srcImage, Stream destStream)
{
RasterCodecs codecs = new RasterCodecs();
// Create a grayscale image
CreateGrayscaleImageCommand cmd = new CreateGrayscaleImageCommand();
cmd.BitsPerPixel = 16;
cmd.LowBit = 0;
cmd.HighBit = 15;
cmd.Run(srcImage);
RasterImage destImage = cmd.DestinationImage;
// Save the image to disk
codecs.Save(
destImage,
destStream,
RasterImageFormat.Bmp,
16);
// Clean up
destImage.Dispose();
srcImage.Dispose();
}
vb[Silverlight VB Example]
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing
Imports Leadtools.Windows.Media
Public Sub CreateGrayscaleImageCommandExample(ByVal srcImage As RasterImage, ByVal destStream As Stream)
Dim codecs As RasterCodecs = New RasterCodecs()
' Create a grayscale image
Dim cmd As CreateGrayscaleImageCommand = New CreateGrayscaleImageCommand()
cmd.BitsPerPixel = 16
cmd.LowBit = 0
cmd.HighBit = 15
cmd.Run(srcImage)
Dim destImage As RasterImage = cmd.DestinationImage
' Save the image to disk
codecs.Save(destImage, destStream, RasterImageFormat.Bmp, 16)
' Clean up
destImage.Dispose()
srcImage.Dispose()
End Sub
CreateGrayscaleImageCommand Members
Leadtools.ImageProcessing Namespace
Introduction to Image Processing With LEADTOOLS
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