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GetRegionPerimeterLength Method

Updates the curve array based on a curve or lines that pass through the specified points.
public static int GetRegionPerimeterLength( 
   RasterImage image, 
   RasterRegionXForm xForm 
Public Shared Function GetRegionPerimeterLength( _ 
   ByVal image As RasterImage, _ 
   ByVal xForm As RasterRegionXForm _ 
) As Integer 
static int GetRegionPerimeterLength(  
   RasterImage^ image, 
   RasterRegionXForm^ xForm 


References the image that contains the region.

RasterRegionXForm object that contains information used to translate between display coordinates and image coordinates. If you specify null in this parameter, the scalar fields default to 1, the offsets default to 0, and the view perspective defaults to the image's view perspective.

Return Value

The perimeter length of the region.

  • This command works only on images having a region. If an image does not have a region the command returns the error: Not Initialized.
  • This command supports 12 and 16-bit grayscale and 48 and 64-bit color images. Support for 12 and 16-bit grayscale and 48 and 64-bit color images is available only in the Document/Medical toolkits.

Run the GetRegionPerimeterLength method on an image.

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Effects; 
using Leadtools.ImageProcessing.Color; 
public void GetRegionPerimeterLengthExample() 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg")); 
   // Prepare the command 
   LeadRect rcRect = new LeadRect(image.Width / 3, image.Height / 3, image.Width * 2 / 3, image.Height * 2 / 3); 
   image.AddEllipseToRegion(null, rcRect, RasterRegionCombineMode.Set); 
   MessageBox.Show("Length = " + EffectsUtilities.GetRegionPerimeterLength(image, null)); 
static class LEAD_VARS 
   public const string ImagesDir = @"C:\LEADTOOLS21\Resources\Images"; 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing 
Imports Leadtools.ImageProcessing.Color 
Imports Leadtools.ImageProcessing.Effects 
Public Sub GetRegionPerimeterLengthExample() 
   Dim codecs As New RasterCodecs() 
   codecs.ThrowExceptionsOnInvalidImages = True 
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg")) 
   ' Prepare the command 
   Dim rcRect As LeadRect = New LeadRect(leadImage.Width \ 3, leadImage.Height \ 3, leadImage.Width * 2 \ 3, leadImage.Height * 2 \ 3) 
   leadImage.AddEllipseToRegion(Nothing, rcRect, RasterRegionCombineMode.Set) 
   MessageBox.Show("Length = " + Convert.ToString(EffectsUtilities.GetRegionPerimeterLength(leadImage, Nothing))) 
End Sub 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\LEADTOOLS21\Resources\Images" 
End Class 

Target Platforms

Help Version 21.0.2021.7.2
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Leadtools.ImageProcessing.Effects Assembly
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2021 LEAD Technologies, Inc. All Rights Reserved.