LeftMargin Property

Summary

Number of units to exclude from the left edge of the image.

Syntax

Objective-C

C++/CLI

Java

Python

public int LeftMargin {get; set;}

@property (nonatomic, assign) NSUInteger leftMargin;

public int getLeftMargin(); 
public void setLeftMargin( 
   int intValue 
);

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

LeftMargin # get and set (BlankPageDetectorCommand)

Property Value

Number of units to exclude from the left edge of the image. Possible values range from 0 to the image's width, in units determined by the value specified in Flags. Units of measure such as inches or centimeters can be used by enabling the corresponding BlankPageDetectorCommandFlags.

Example

Runs the BlankPageDetectorCommand on an image and determines whether it is blank.

Java

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
public void BlankPageDetectorCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Clean.tif")); 
 
   // Prepare the command 
   BlankPageDetectorCommand command = new BlankPageDetectorCommand() 
   { 
      // The following properties can be left to their defaults or set to desired values: 
      LeftMargin = 0, 
      TopMargin = 0, 
      RightMargin = 0, 
      BottomMargin = 0, 
      MinimumTextSize = 0 
   }; 
 
   //Determine whether the image is a blank page 
   command.Flags = BlankPageDetectorCommandFlags.DetectNoisyPage; 
   command.Run(image); 
 
   MessageBox.Show(" Is Blank   : " + command.IsBlank + "\n Accuracy : " + (command.Accuracy * 1.0 / 100) + "%", "Blank Page Detection Results"); 
 
} 
 
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.*; 
import leadtools.codecs.*; 
import leadtools.imageprocessing.core.*; 
 
 
public void blankPageDetectorCommandExample() { 
 
    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, "Clean.tif")); 
 
    // Prepare the command 
    BlankPageDetectorCommand command = new BlankPageDetectorCommand(); 
 
    // Determine whether the image is a blank page 
    command.setFlags(BlankPageDetectorCommandFlags.DETECT_NOISY_PAGE.getValue()); 
    command.run(image); 
    codecs.save(image, combine(LEAD_VARS_IMAGES_DIR, "Result.jpg"), RasterImageFormat.JPEG, 24); 
    System.out.printf( 
            "Command run and image saved to %1s%nBlank Page Detection Results: %nIs blank: %2s%nAccuracy: %3s%%%n", 
            combine(LEAD_VARS_IMAGES_DIR, "Result.jpg"), command.isBlank(), (command.getAccuracy() / 100.0)); 
    assertTrue(new File(combine(LEAD_VARS_IMAGES_DIR, "Result.jpg")).exists()); 
 
}

Requirements

Target Platforms

Reference

BlankPageDetectorCommand Class

BlankPageDetectorCommand Members

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Help Version 23.0.2024.3.3

Leadtools.ImageProcessing.Core Assembly

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Getting Started

Namespaces

Leadtools.ImageProcessing.Core Namespace

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