FilterHeight Property

Summary

Gets or sets the number of rows in the user-defined array (mask).

Syntax

Objective-C

C++/CLI

Java

Python

public int FilterHeight { get; set; }

@property (nonatomic, assign) NSUInteger filterHeight;

public int getFilterHeight(); 
public void setFilterHeight( 
   int intValue 
);

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

FilterHeight # get and set (UserFilterCommand)

Property Value

Number of rows in the user-defined array (mask). This property only accepts positive values.

Example

Java

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Effects; 
 
 
public void UserFilterCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "IMAGE1.CMP")); 
 
   // Prepare the command 
   int i, j; 
   UserFilterCommand command = new UserFilterCommand(); 
   command.CenterPoint = new LeadPoint(1, 1); 
   command.Divisor = 1; 
   command.Offset = 0; 
   command.Type = UserFilterCommandType.Sum; 
   command.FilterHeight = 3; 
   command.FilterWidth = 3; 
   command.Matrix = new int[9]; 
 
   // Initialize the array with factor used to apply the high pass filter. 
   for (i = 0; i < 3; i++) 
   { 
      for (j = 0; j < 3; j++) 
      { 
         if (j == 1 || i == 1) 
         { 
            if (j == 1 && i == 1) 
               command.Matrix[i * 3 + j] = 5; 
            else 
               command.Matrix[i * 3 + j] = -1; 
         } 
         else 
            command.Matrix[i * 3 + j] = 0; 
      } 
   } 
 
   // Apply the high pass custom filter. 
   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 static org.junit.Assert.*; 
 
import leadtools.*; 
import leadtools.codecs.*; 
import leadtools.imageprocessing.effects.UserFilterCommand; 
import leadtools.imageprocessing.effects.UserFilterCommandType; 
 
 
public void userFilterCommandExample() { 
   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, "IMAGE1.CMP")); 
 
   // Prepare the command 
   int i, j; 
   UserFilterCommand command = new UserFilterCommand(); 
   command.setCenterPoint(new LeadPoint(1, 1)); 
   command.setDivisor(1); 
   command.setOffset(0); 
   command.setType(UserFilterCommandType.SUM); 
   command.setFilterHeight(3); 
   command.setFilterWidth(3); 
   command.setMatrix(new int[9]); 
 
   // Initialize the array with factor used to apply the high pass filter. 
   for (i = 0; i < 3; i++) { 
      for (j = 0; j < 3; j++) { 
         if (j == 1 || i == 1) { 
            if (j == 1 && i == 1) 
               command.getMatrix()[i * 3 + j] = 5; 
            else 
               command.getMatrix()[i * 3 + j] = -1; 
         } else 
            command.getMatrix()[i * 3 + j] = 0; 
      } 
   } 
   // Apply the high pass custom filter. 
   int change = command.run(image); 
   assertTrue(change != RasterImageChangedFlags.NONE); 
 
   codecs.save(image, combine(LEAD_VARS_IMAGES_DIR, "Result.jpg"), RasterImageFormat.JPEG, 24); 
   System.out.println("Command run and image saved to " + combine(LEAD_VARS_IMAGES_DIR, "Result.jpg")); 
}

Requirements

Target Platforms

Reference

UserFilterCommand Class

UserFilterCommand Members

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Help Version 23.0.2024.3.3

Leadtools.ImageProcessing.Effects Assembly

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