FeretsDiameterCommand Class

C#
Visual Basic
WinRT C#
Java
Objective-C
WinRT JavaScript
C++

public class FeretsDiameterCommand

'Declaration

Public Class FeretsDiameterCommand

'Usage

Dim instance As FeretsDiameterCommand

public sealed class FeretsDiameterCommand

function Leadtools.ImageProcessing.Effects.FeretsDiameterCommand()

public ref class FeretsDiameterCommand

This command calculates the Feret's Diameter (caliper length), the longest distance between any two points along the boundary. This is equivalent to the minimum diameter of a tube through which this object can pass.
This command does not support signed data images.

Run the FeretsDiameterCommand on an image.

C#
Visual Basic
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing.Effects

   
Public Sub FeretsDiameterCommandExample()
   Dim codecs As New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Cannon.jpg"))

   ' Prepare the command
   Dim rcRect As LeadRect = New LeadRect(leadImage.Width \ 4, leadImage.Height \ 4, leadImage.Width * 3 \ 4, leadImage.Height * 3 \ 4)
   leadImage.AddEllipseToRegion(Nothing, rcRect, RasterRegionCombineMode.Set)

   Dim contourcommand As RegionContourPointsCommand = New RegionContourPointsCommand(Nothing)
   contourcommand.Run(leadImage)

   Dim command As FeretsDiameterCommand = New FeretsDiameterCommand(contourcommand.Points)
   command.Run()

   MessageBox.Show(String.Format("ResultsFirstIndex :{0}" & Environment.NewLine & "SecondIndex: {1}" & Environment.NewLine & "Diameter : {2}", command.FirstIndex, command.SecondIndex, command.FeretsDiameter), "Ferets Diameter Test Results")

End Sub

Public NotInheritable Class LEAD_VARS
Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class

using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Effects;

      
public void FeretsDiameterCommandExample()
{
   // Load an image
   RasterCodecs codecs = new RasterCodecs();
   codecs.ThrowExceptionsOnInvalidImages = true;
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, @"Cannon.jpg"));

   // Prepare the command
   LeadRect rcRect = new LeadRect(image.Width / 4, image.Height / 4, image.Width * 3 / 4, image.Height * 3 / 4);
   image.AddEllipseToRegion(null, rcRect, RasterRegionCombineMode.Set); 

   RegionContourPointsCommand contourcommand = new RegionContourPointsCommand(null);
   if (contourcommand != null)
      contourcommand.Run(image);

   FeretsDiameterCommand command = new FeretsDiameterCommand(contourcommand.Points);
   command.Run();

   MessageBox.Show(string.Format("Results\nFirstIndex : {0}\nSecondIndex: {1}\nDiameter : {2}",command.FirstIndex, command.SecondIndex, command.FeretsDiameter) ,"Ferets Diameter Test Results");
}

static class LEAD_VARS
{
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}

Target Platforms

Reference