BlankPageDetectorCommand Constructor(BlankPageDetectorCommandFlags,int,int,int,int)

Summary

Initializes a new BlankPageDetectorCommand with explicit parameters.

Syntax

Objective-C

C++/CLI

Java

Python

public BlankPageDetectorCommand( 
   BlankPageDetectorCommandFlags flags, 
   int LeftMargin, 
   int TopMargin, 
   int RightMargin, 
   int BottomMargin 
)

- (instancetype)initWithFlags:(LTBlankPageDetectorCommandFlags)flags leftMargin:(NSUInteger)leftMargin topMargin:(NSUInteger)topMargin rightMargin:(NSUInteger)rightMargin bottomMargin:(NSUInteger)bottomMargin NS_DESIGNATED_INITIALIZER;

public BlankPageDetectorCommand( 
  int flags,  
  int LeftMargin,  
  int TopMargin,  
  int RightMargin,  
  int BottomMargin 
)

public: 
BlankPageDetectorCommand(  
   BlankPageDetectorCommandFlags flags, 
   int LeftMargin, 
   int TopMargin, 
   int RightMargin, 
   int BottomMargin 
)

__init__(self,flags,LeftMargin,TopMargin,RightMargin,BottomMargin) # Overloaded constructor

Remarks

The UseUserMargins flag needs to be added as a BlankPageDetectorCommandFlags flag if the parameters passed as margins are to be used. Not supplying this flag will cause the margins supplied to be ignored.

Parameters

flags
Flag that determines the behavior of the blank page detection process.

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

TopMargin
Number of units to exclude from the top of the image.

RightMargin
Number of units to exclude from the right of the image.

BottomMargin
Number of units to exclude from the bottom of the image.

Example

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

Overload List

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Help Version 23.0.2024.3.3

Leadtools.ImageProcessing.Core Assembly

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