←Select platform

RegionThreshold Property

Gets or sets the value that specifies the stopping point for the region.
public int RegionThreshold { get; set; } 
property int RegionThreshold { 
   int get(); 
   void set (    int ); 
RegionThreshold # get and set (KaufmannRegionCommand) 

Property Value

The stopping point for the region.


The region is created using a magic wand technique. The Magic Wand is a selection tool that works by starting from a point and expanding to different areas of the image. If the difference between the color of the new pixel which is about to be included in the region and the pixel color which is pointed to by RegionStart exceeds the difference between the RegionThreshold and the pixel color which is pointed to by RegionStart, the pixel will not be included. For more information, refer to AddMagicWandToRegion Method.

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
public void KaufmannRegionCommandExample() 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Image3.dcm")); 
   // Prepare the command 
   LeadPoint startPoint = new LeadPoint((image.Width / 2), (image.Height / 2)); 
   // apply the command in order to get the pixels count of the first region. 
   KaufmannRegionCommand KaufmannCommandInner = new KaufmannRegionCommand(); 
   KaufmannCommandInner.CombineMode = RasterRegionCombineMode.Set; 
   KaufmannCommandInner.MaximumInput = 110; 
   KaufmannCommandInner.MinimumInput = 54; 
   KaufmannCommandInner.Radius = 21; 
   KaufmannCommandInner.RegionStart = startPoint; 
   KaufmannCommandInner.RegionThreshold = 13; 
   KaufmannCommandInner.RemoveHoles = true; 
   int firstPixelCount = KaufmannCommandInner.PixelsCount; 
   // apply the command once more. 
   KaufmannRegionCommand KaufmannCommandOuter = new KaufmannRegionCommand(29, 51, 229, 207, startPoint, true, RasterRegionCombineMode.Set); 
   int secondPixelCount = KaufmannCommandOuter.PixelsCount; 
   // print the ratio between the first and the second region. 
   double result = (firstPixelCount * 1.0 / secondPixelCount); 
static class LEAD_VARS 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 

Target Platforms

Help Version 23.0.2024.3.3
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2024 LEAD Technologies, Inc. All Rights Reserved.

Leadtools.ImageProcessing.Core Assembly

Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.