ColorCountCommand Class

Summary

Gets the number of unique colors in an image.

Syntax

Objective-C

C++/CLI

Java

Python

public class ColorCountCommand : RasterCommand

@interface LTColorCountCommand : LTRasterCommand

public class ColorCountCommand 
    extends RasterCommand

public ref class ColorCountCommand : public RasterCommand

class ColorCountCommand(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.

Java

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:\LEADTOOLS23\Resources\Images"; 
}

 
import java.io.File; 
import java.io.IOException; 
 
import org.junit.*; 
import org.junit.runner.JUnitCore; 
import org.junit.runner.Result; 
import org.junit.runner.notification.Failure; 
import static org.junit.Assert.*; 
 
import leadtools.RasterImage; 
import leadtools.RasterImageFormat; 
import leadtools.codecs.*; 
import leadtools.imageprocessing.color.*; 
 
 
public void colorCountCommandExample() { 
 
    final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images"; 
    // Load an image 
    RasterCodecs codecs = new RasterCodecs(); 
    codecs.setThrowExceptionsOnInvalidImages(true); 
 
    RasterImage image = codecs.load(combine(LEAD_VARS_IMAGES_DIR, "Master.jpg")); 
 
    // Prepare the command 
    ColorCountCommand command = new ColorCountCommand(); 
    int colorCount; 
    // Get the number of colors in the image 
    command.run(image); 
    codecs.save(image, combine(LEAD_VARS_IMAGES_DIR, "Result.jpg"), RasterImageFormat.JPEG, 24); 
    colorCount = command.getColorCount(); 
 
    System.out.println("The image has " + colorCount + " colors"); 
    assertTrue(colorCount != 0); 
 
}

Requirements

Target Platforms

Reference

ColorCountCommand Members

Leadtools.ImageProcessing.Color Namespace

Leadtools.ImageProcessing.Core.WindowLevelCommand

Color Halftone and Halftone Images

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Help Version 23.0.2024.3.3

Leadtools.ImageProcessing.Color Assembly

Introduction

Getting Started

Namespaces

Leadtools.ImageProcessing.Color Namespace

Assemblies