AutoCropRectangleCommand Constructor(int)

Summary

Initializes a new AutoCropRectangleCommand class object with explicit parameters.

Syntax

Objective-C

C++/CLI

Java

Python

public AutoCropRectangleCommand( 
   int threshold 
)

- (instancetype)initWithThreshold:(NSUInteger)threshold NS_DESIGNATED_INITIALIZER;

public AutoCropRectangleCommand( 
   int threshold 
);

public: 
AutoCropRectangleCommand(  
   int threshold 
)

__init__(self,threshold) # Overloaded constructor

Parameters

threshold
Delta value for detecting blank space. Starting at each edge of the image and evaluating toward the center, any change in intensity that is less than or equal to this parameter is considered blank space. Valid values are 0 to 255.

Remarks

For more information, refer to Introduction to Image Processing With LEADTOOLS.

Example

Run the AutoCropRectangleCommand on an image to get the AutoCrop rectangle.

Java

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
public void AutoCropRectangleConstructorExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg")); 
 
   // Prepare the command 
   int threshold = 0; 
   try 
   { 
      AutoCropRectangleCommand command = new AutoCropRectangleCommand(threshold); 
      // Get the Rectangle for AutoCrop with tolerance = threshold passes by the user. 
      command.Run(image); 
      MessageBox.Show("Left = " + command.Rectangle.Left.ToString() + "\n" + 
         "Top = " + command.Rectangle.Top.ToString() + "\n" + 
         "Right = " + command.Rectangle.Right.ToString() + "\n" + 
         "Bottom = " + command.Rectangle.Bottom.ToString()); 
   } 
   catch (Exception exception) 
   { 
      MessageBox.Show(exception.Message); 
   } 
 
} 
 
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.Test; 
import org.junit.runner.JUnitCore; 
import org.junit.runner.Result; 
import org.junit.runner.notification.Failure; 
import static org.junit.Assert.*; 
 
import leadtools.*; 
import leadtools.codecs.*; 
import leadtools.imageprocessing.core.AutoCropRectangleCommand; 
 
 
public void autoCropRectangleConstructorExample() { 
 
    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 
    int threshold = 0; 
    try { 
        AutoCropRectangleCommand command = new AutoCropRectangleCommand(threshold); 
        // Get the Rectangle for AutoCrop with tolerance = threshold passes by the user 
        command.run(image); 
        System.out.printf("Left = %1s%nTop = %2s%nRight = %3s%nBottom = %4s%n", command.getRectangle().getLeft(), 
                command.getRectangle().getRight(), command.getRectangle().getRight(), 
                command.getRectangle().getBottom()); 
    } catch (Exception exception) { 
        System.out.println(exception.getMessage()); 
    } 
 
    codecs.save(image, combine(LEAD_VARS_IMAGES_DIR, "Result.jpg"), RasterImageFormat.JPEG, 0); 
 
    System.out.println("Command run and image saved to: " + combine(LEAD_VARS_IMAGES_DIR, "Result.jpg")); 
    assertTrue(new File(combine(LEAD_VARS_IMAGES_DIR, "Result.jpg")).exists()); 
 
}

Requirements

Target Platforms

Reference

AutoCropRectangleCommand Class

AutoCropRectangleCommand Members

Overload List

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Help Version 23.0.2024.3.3

Leadtools.ImageProcessing.Core Assembly

Introduction

Getting Started

Namespaces

Leadtools.ImageProcessing.Core Namespace

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