RollingBall Property

Summary

Gets or sets the radius (in pixels) of the ball that will roll over the entire image to determine the background.

Syntax

Objective-C

C++/CLI

Java

Python

public int RollingBall { get; set; }

@property (nonatomic, assign) NSUInteger rollingBall;

public int getRollingBall(); 
public void setRollingBall( 
   int intValue 
);

public: 
property int RollingBall { 
   int get(); 
   void set (    int ); 
}

RollingBall # get and set (SubtractBackgroundCommand)

Property Value

The radius (in pixels) of the ball that will roll over the entire image to determine the background. Recommended value is 50. This property accepts only positive values.

Example

Java

using Leadtools; 
using Leadtools.ImageProcessing; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
public void SubtractBackgroundCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, @"ImageProcessingDemo\Image4.Tif")); 
 
   // Prepare the command 
   SubtractBackgroundCommand command = new SubtractBackgroundCommand(); 
   command.RollingBall = 50; 
   command.BrightnessFactor = 100; 
   command.ShrinkingSize = SubtractBackgroundCommandType.DependOnRollingBallSize; 
   command.Flags = SubtractBackgroundCommandFlags.BackgroundIsDarker; 
   //Apply Subtract Background effect on the image. 
   command.Run(image); 
 
} 
 
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 leadtools.RasterImage; 
import leadtools.RasterImageFormat; 
import leadtools.codecs.*; 
import leadtools.imageprocessing.*; 
import leadtools.imageprocessing.core.*; 
 
 
public void subtractBackgroundCommandExample() { 
    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, "Image4.tif")); 
 
    // Prepare the command 
    SubtractBackgroundCommand command = new SubtractBackgroundCommand(); 
    command.setRollingBall(50); 
    command.setBrightnessFactor(100); 
    command.setShrinkingSize(SubtractBackgroundCommandType.DEPEND_ON_ROLLING_BALL_SIZE); 
    command.setFlags(SubtractBackgroundCommandFlags.BACKGROUND_IS_DARKER.getValue()); 
 
    // Apply subtract background effect on the image 
    command.run(image); 
    codecs.save(image, combine(LEAD_VARS_IMAGES_DIR, "Result.jpg"), RasterImageFormat.JPEG, 24); 
 
    System.out.println("Command run and output image saved to " + combine(LEAD_VARS_IMAGES_DIR, "Result.jpg")); 
}

Requirements

Target Platforms

Reference

SubtractBackgroundCommand Class

SubtractBackgroundCommand Members

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Help Version 23.0.2024.3.3

Leadtools.ImageProcessing.Core Assembly

Introduction

Getting Started

Namespaces

Leadtools.ImageProcessing.Core Namespace

Assemblies