ColorCountCommand Class

Summary

Gets the number of unique colors in an image.

Syntax

Objective-C

C++

Java

public class ColorCountCommand : RasterCommand

Public Class ColorCountCommand  
   Inherits RasterCommand

@interface LTColorCountCommand : LTRasterCommand

public class ColorCountCommand extends RasterCommand

public ref class ColorCountCommand : public RasterCommand

Remarks

This command supports 12 and 16-bit grayscale images. Support for 12 and 16-bit grayscale images is available only in the Document/Medical toolkits.
This command supports 32-bit grayscale images.

Example

Run the ColorCountCommand on an image and display the number of unique colors in the specified image.

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Color; 
 
public void ColorCountCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg")); 
 
   // Prepare the command 
   ColorCountCommand command = new ColorCountCommand(); 
   int colorCount; 
   //Get the number of colors in the image. 
   command.Run(image); 
   colorCount = command.ColorCount; 
   MessageBox.Show("The image has " + colorCount.ToString() + " colors", "ColorCountCommand Results", MessageBoxButtons.OK); 
 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS21\Resources\Images"; 
}

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Color 
 
Public Sub ColorCountCommandExample() 
   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 ColorCountCommand = New ColorCountCommand 
   Dim colorCount As Integer 
   'Get the number of colors in the image. 
 
   command.Run(leadImage) 
   colorCount = command.ColorCount 
   MessageBox.Show("The image has " + colorCount.ToString() + " colors", "ColorCountCommand Results", MessageBoxButtons.OK) 
 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\LEADTOOLS21\Resources\Images" 
End Class

Requirements

Target Platforms

Reference

ColorCountCommand Members

Leadtools.ImageProcessing.Color Namespace

Leadtools.ImageProcessing.Core.WindowLevelCommand

Color Halftone and Halftone Images

Download our FREE evaluation

Help Version 21.0.2021.7.2