The ColorizeGrayCommandData class contains information about gray color intensities (Threshold) and the associated colors (Color) used in the coloration methods of the ColorizeGrayCommand class.
public class ColorizeGrayCommandData
Public Class ColorizeGrayCommandData
@interface LTColorizeGrayCommandData : NSObject
public class ColorizeGrayCommandData
public ref class ColorizeGrayCommandData
The ColorizeGrayCommand class uses an array of ColorizeGrayCommand class objects with its length being a user-defined number. If the array has N entries, then:
Intensity Range | Color |
0 ~ Threshold[0] | Color[0] |
Threshold[0] ~ Threshold[1] | Color[1] |
Threshold[1] ~ Threshold[2] | Color[2] |
... | ... |
Threshold[N - 3] ~ Threshold[N - 2] | Color[N - 2] |
Threshold[N - 2] ~ Threshold[N - 1] | Color[N - 1] |
Notice that the Threshold[N-1] value will be ignored and instead will be treated as a value equal to 255, 4095 and 65535 for 8, 12 and 16-bit images respectively.
Although it is not a requirement, it is recommended that Threshold[0] is less than Threshold[1], which is less than Threshold[2], ..., which is less than Threshold[N-1]. Consider the following example with a ColorizeGrayCommandData class of 4 entries for a 12-Bit gray image, where this recommendation is not followed:
Threshold[0] = 1000 | Color[0] is Red |
Threshold[1] = 3000 | Color[1] is Green |
Threshold[2] = 2000 // Notice the threshold here. | Color[2] is Blue |
Threshold[3] = 4000 | Color[3] is Yellow |
In this case, pixel intensities from 0 to 1000 will be Red, pixels 1001 to 3000 will be Green, pixels 3001 to 4000 will be Yellow, and pixels from 4001 to the last possible intensity will be Yellow too.
For more information, refer to Correcting Colors.
This example loads a 16-bit grayscale image and then colors it.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Core;
public void ColorizeGrayCommandDataExample()
{
// Load an image
RasterCodecs codecs = new RasterCodecs();
codecs.ThrowExceptionsOnInvalidImages = true;
RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, @"ImageProcessingDemo\Beauty16.jpg"));
// Prepare the command
ColorizeGrayCommandData[] pGrayColors = new ColorizeGrayCommandData[6];
for (int i = 0; i < 6; i++)
pGrayColors[i] = new ColorizeGrayCommandData();
pGrayColors[0].Threshold = 9999;
pGrayColors[1].Threshold = 19999;
pGrayColors[2].Threshold = 29999;
pGrayColors[3].Threshold = 39999;
pGrayColors[4].Threshold = 49999;
pGrayColors[5].Threshold = 59999;
pGrayColors[0].Color = new RasterColor(255, 0, 0);
pGrayColors[1].Color = new RasterColor(0, 255, 0);
pGrayColors[2].Color = new RasterColor(0, 0, 255);
pGrayColors[3].Color = new RasterColor(0, 255, 255);
pGrayColors[4].Color = new RasterColor(255, 0, 255);
pGrayColors[5].Color = new RasterColor(255, 255, 0);
ColorizeGrayCommand command = new ColorizeGrayCommand();
command.GrayColors = pGrayColors;
//Call the command
command.Run(image);
// Save the resulted image
codecs.Save(command.DestinationImage, Path.Combine(LEAD_VARS.ImagesDir, "ColorizeGrayResult.Bmp"), RasterImageFormat.Bmp, 24);
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing.Core
Public Sub ColorizeGrayCommandDataExample()
Dim codecs As New RasterCodecs()
codecs.ThrowExceptionsOnInvalidImages = True
Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "ImageProcessingDemo\Beauty16.jpg"))
' Prepare the command
Dim i As Integer
Dim pGrayColors() As ColorizeGrayCommandData
ReDim pGrayColors(5)
For i = 0 To 5
pGrayColors(i) = New ColorizeGrayCommandData
Next
pGrayColors(0).Threshold = 9999
pGrayColors(1).Threshold = 19999
pGrayColors(2).Threshold = 29999
pGrayColors(3).Threshold = 39999
pGrayColors(4).Threshold = 49999
pGrayColors(5).Threshold = 59999
pGrayColors(0).Color = New RasterColor(255, 0, 0)
pGrayColors(1).Color = New RasterColor(0, 255, 0)
pGrayColors(2).Color = New RasterColor(0, 0, 255)
pGrayColors(3).Color = New RasterColor(0, 255, 255)
pGrayColors(4).Color = New RasterColor(255, 0, 255)
pGrayColors(5).Color = New RasterColor(255, 255, 0)
Dim command As ColorizeGrayCommand = New ColorizeGrayCommand
command.GrayColors = pGrayColors
'Call the command
command.Run(leadImage)
' Save the resulted Image
codecs.Save(command.DestinationImage, Path.Combine(LEAD_VARS.ImagesDir, "ColorizeGrayResult.Bmp"), RasterImageFormat.Bmp, 24)
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.Examples;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Core;
public void ColorizeGrayCommandDataExample(RasterImage image, Stream outStream)
{
// Prepare the command
ColorizeGrayCommandData[] pGrayColors = new ColorizeGrayCommandData[6];
for (int i = 0; i < 6; i++)
pGrayColors[i] = new ColorizeGrayCommandData();
pGrayColors[0].Threshold = 9999;
pGrayColors[1].Threshold = 19999;
pGrayColors[2].Threshold = 29999;
pGrayColors[3].Threshold = 39999;
pGrayColors[4].Threshold = 49999;
pGrayColors[5].Threshold = 59999;
pGrayColors[0].Color = new RasterColor(255, 0, 0);
pGrayColors[1].Color = new RasterColor(0, 255, 0);
pGrayColors[2].Color = new RasterColor(0, 0, 255);
pGrayColors[3].Color = new RasterColor(0, 255, 255);
pGrayColors[4].Color = new RasterColor(255, 0, 255);
pGrayColors[5].Color = new RasterColor(255, 255, 0);
ColorizeGrayCommand command = new ColorizeGrayCommand();
command.GrayColors = pGrayColors;
//Call the command
command.Run(image);
// Save result image
RasterCodecs codecs = new RasterCodecs();
codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24);
image.Dispose();
}
vb[Silverlight VB Example]
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing.Core
Public Sub ColorizeGrayCommandDataExample(ByVal image As RasterImage, ByVal outStream As Stream)
' Prepare the command
Dim pGrayColors As ColorizeGrayCommandData() = New ColorizeGrayCommandData(5) {}
For i As Integer = 0 To 5
pGrayColors(i) = New ColorizeGrayCommandData()
Next i
pGrayColors(0).Threshold = 9999
pGrayColors(1).Threshold = 19999
pGrayColors(2).Threshold = 29999
pGrayColors(3).Threshold = 39999
pGrayColors(4).Threshold = 49999
pGrayColors(5).Threshold = 59999
pGrayColors(0).Color = New RasterColor(255, 0, 0)
pGrayColors(1).Color = New RasterColor(0, 255, 0)
pGrayColors(2).Color = New RasterColor(0, 0, 255)
pGrayColors(3).Color = New RasterColor(0, 255, 255)
pGrayColors(4).Color = New RasterColor(255, 0, 255)
pGrayColors(5).Color = New RasterColor(255, 255, 0)
Dim command As ColorizeGrayCommand = New ColorizeGrayCommand()
command.GrayColors = pGrayColors
'Call the command
command.Run(image)
' Save result image
Dim codecs As RasterCodecs = New RasterCodecs()
codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24)
image.Dispose()
End Sub
Help Collections
Raster .NET | C API | C++ Class Library | HTML5 JavaScript
Document .NET | C API | C++ Class Library | HTML5 JavaScript
Medical .NET | C API | C++ Class Library | HTML5 JavaScript
Medical Web Viewer .NET
Multimedia
Direct Show .NET | C API | Filters
Media Foundation .NET | C API | Transforms
Supported Platforms
.NET, Java, Android, and iOS/macOS Assemblies
Imaging, Medical, and Document
C API/C++ Class Libraries
Imaging, Medical, and Document
HTML5 JavaScript Libraries
Imaging, Medical, and Document
Your email has been sent to support! Someone should be in touch! If your matter is urgent please come back into chat.
Chat Hours:
Monday - Friday, 8:30am to 6pm ET
Thank you for your feedback!
Please fill out the form again to start a new chat.
All agents are currently offline.
Chat Hours:
Monday - Friday
8:30AM - 6PM EST
To contact us please fill out this form and we will contact you via email.