HistogramCommand Constructor(HistogramCommandFlags)

Summary

Initializes a new HistogramCommand class object with explicit parameters.

Syntax

Objective-C

C++/CLI

Java

Python

public HistogramCommand( 
   HistogramCommandFlags channel 
)

- (instancetype)initWithChannel:(LTHistogramCommandFlags)channel NS_DESIGNATED_INITIALIZER;

public HistogramCommand(int channel)

public: 
HistogramCommand(  
   HistogramCommandFlags channel 
)

__init__(self,channel) # Overloaded constructor

Parameters

channel
Flags that indicate the channel for which to get the histogram and the bits to use in calculating the histogram.

Example

Run the HistogramCommand on an image to get the red-channel histogram.

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Color; 
 
 
public void HistogramConstructorExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg")); 
 
   // Prepare the command 
   HistogramCommand command = new HistogramCommand(HistogramCommandFlags.Red | HistogramCommandFlags.AllBits); 
   command.Run(image); 
   codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24); 
   //This is where the histogram information strored 
   long[] histogramValues = command.Histogram; 
 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
}