Error processing SSI file
LEADTOOLS (Leadtools assembly)

Show in webframe

CalculateRegionArea Method








Gets the total number of pixels in the image region.
Syntax
public long CalculateRegionArea()
'Declaration
 
Public Function CalculateRegionArea() As Long
'Usage
 
Dim instance As RasterImage
Dim value As Long
 
value = instance.CalculateRegionArea()
public long CalculateRegionArea()
@property (nonatomic, assign, readonly) unsigned long regionArea
public long calculateRegionArea()
 function Leadtools.RasterImage.CalculateRegionArea()
public:
int64 CalculateRegionArea(); 

Return Value

The pixel count.
Remarks
For more information, refer to Working with the Existing Region.
Example
Copy Code  
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing
Imports Leadtools.ImageProcessing.Core
Imports Leadtools.ImageProcessing.Color
Imports Leadtools.Controls
Imports Leadtools.Dicom
Imports Leadtools.Drawing
Imports Leadtools.Svg

      
Public Sub CalculateRegionAreaExample()
   Dim codecs As RasterCodecs = New RasterCodecs()
   Dim srcFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp")

   ' Load the image
   Dim image As RasterImage = codecs.Load(srcFileName)

   ' Add a region to the image
   Dim rc As LeadRect = New LeadRect(image.Width \ 3, image.Height \ 3, image.Width \ 3, image.Height \ 3)
   image.AddEllipseToRegion(Nothing, rc, RasterRegionCombineMode.Set)

   ' Get the number of pixels in the region
   Dim area As Integer = CInt(image.CalculateRegionArea())
   Console.WriteLine("Number of pixels in region after a region is added: {0}", area)

   image.Dispose()
   codecs.Dispose()
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;
using Leadtools.ImageProcessing.Core;
using Leadtools.ImageProcessing.Color;
using Leadtools.Dicom;
using Leadtools.Drawing;
using Leadtools.Controls;
using Leadtools.Svg;

      
public void CalculateRegionAreaExample()
{
   RasterCodecs codecs = new RasterCodecs();
   string srcFileName = Path.Combine(ImagesPath.Path, "Image1.cmp");

   // Load the image
   RasterImage image = codecs.Load(srcFileName);

   // Add a region to the image
   LeadRect rc = new LeadRect(image.Width / 3, image.Height / 3, image.Width / 3, image.Height / 3);
   image.AddEllipseToRegion(null, rc, RasterRegionCombineMode.Set);

   // Get the number of pixels in the region
   long area = image.CalculateRegionArea();
   Console.WriteLine("Number of pixels in region after a region is added: {0}", area);

   image.Dispose();
   codecs.Dispose();
}
RasterImageExamples.prototype.CalculateRegionAreaExample = function ( )
{
   Tools.SetLicense ( ) ;
   with ( Leadtools )
   {
      with ( Leadtools.Codecs ) 
      {
         var codecs = new RasterCodecs();

         var srcFileName = "Assets\\Image1.cmp";
         var image = null ;
         // Load the image
         return Tools.AppInstallFolder().getFileAsync(srcFileName).then ( function ( loadFile ) {
            return codecs.loadAsync(LeadStreamFactory.create(loadFile));})
            .then ( function (img ) {
               image = img ;

               // Add a region to the image
               var rc = LeadRectHelper.create(image.width / 3, image.height / 3, image.width / 3, image.height / 3);
               image.addEllipseToRegion(null, rc, RasterRegionCombineMode.set);

               // Get the number of pixels in the region
               var area = image.calculateRegionArea();
               console.info ("Number of pixels in region after a region is added: ", area);

               image.close();
               codecs.close();
            });
      }
   }
}
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Core;
using Leadtools.ImageProcessing.Color;
using Leadtools.Dicom;

      
public async Task CalculateRegionAreaExample()
{
   RasterCodecs codecs = new RasterCodecs();
   string srcFileName = @"Assets\Image1.cmp";

   // Load the image
   StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName);
   RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile));

   // Add a region to the image
   LeadRect rc = LeadRectHelper.Create(image.Width / 3, image.Height / 3, image.Width / 3, image.Height / 3);
   image.AddEllipseToRegion(null, rc, RasterRegionCombineMode.Set);

   // Get the number of pixels in the region
   long area = image.CalculateRegionArea();
   Debug.WriteLine("Number of pixels in region after a region is added: {0}", area);

   image.Dispose();
   codecs.Dispose();
}
using Leadtools;
using Leadtools.Codecs;
using Leadtools.Dicom;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Core;
using Leadtools.ImageProcessing.Color;
using Leadtools.Examples;
using Leadtools.Windows.Media;

public void CalculateRegionAreaExample()
{
   // create a new image to work with
   RasterImage image = new RasterImage(RasterMemoryFlags.Conventional, 500, 500, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, null, null, 0);
   // Add a region to the image
   LeadRect rc = new LeadRect(image.Width / 3, image.Height / 3, image.Width / 3, image.Height / 3);
   image.AddRectangleToRegion(null, rc, RasterRegionCombineMode.Set);

   // Get the number of pixels in the region
   long area = image.CalculateRegionArea();
   Debug.WriteLine("Number of pixels in region after a region is added: {0}", area);

   image.Dispose();
}
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.Dicom
Imports Leadtools.ImageProcessing
Imports Leadtools.ImageProcessing.Core
Imports Leadtools.ImageProcessing.Color
Imports Leadtools.Windows.Media

Public Sub CalculateRegionAreaExample()
   ' create a new image to work with
   Dim image As RasterImage = New RasterImage(RasterMemoryFlags.Conventional, 500, 500, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, Nothing, Nothing, 0)
   ' Add a region to the image
   Dim rc As LeadRect = New LeadRect(image.Width / 3, image.Height / 3, image.Width / 3, image.Height / 3)
   image.AddRectangleToRegion(Nothing, rc, RasterRegionCombineMode.Set)

   ' Get the number of pixels in the region
   Dim area As Long = image.CalculateRegionArea()
   Debug.WriteLine("Number of pixels in region after a region is added: {0}", area)

   image.Dispose()
End Sub
Requirements

Target Platforms

See Also

Reference

RasterImage Class
RasterImage Members

Error processing SSI file