LEADTOOLS (Leadtools assembly)

PointFromImage Method

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Example 







Destination view perspective to which the point should be translated.
The point to translate.
Translates a point (x,y) from this RasterImage view perspective to the specified view perspective.
Syntax
public LeadPoint PointFromImage( 
   RasterViewPerspective viewPerspective,
   LeadPoint pt
)
'Declaration
 
Public Function PointFromImage( _
   ByVal viewPerspective As RasterViewPerspective, _
   ByVal pt As LeadPoint _
) As LeadPoint
'Usage
 
Dim instance As RasterImage
Dim viewPerspective As RasterViewPerspective
Dim pt As LeadPoint
Dim value As LeadPoint
 
value = instance.PointFromImage(viewPerspective, pt)
public LeadPoint PointFromImage( 
   RasterViewPerspective viewPerspective,
   LeadPoint pt
)
-(LeadPoint)pointFromImage:(LTRasterViewPerspective)viewPerspectiveToUse 
                        pt:(LeadPoint)pt;
            
public LeadPoint pointFromImage(
  RasterViewPerspective viewPerspective, 
  LeadPoint pt
)
            
 function Leadtools.RasterImage.PointFromImage( 
   viewPerspective ,
   pt 
)
public:
LeadPoint PointFromImage( 
   RasterViewPerspective viewPerspective,
   LeadPoint pt
) 

Parameters

viewPerspective
Destination view perspective to which the point should be translated.
pt
The point to translate.

Return Value

The translated point.
Remarks

For more information, refer to Accounting for View Perspective.

For more information, refer to Changing Image Coordinates.

Example
Copy Code  
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing
Imports Leadtools.ImageProcessing.Core
Imports Leadtools.ImageProcessing.Color
Imports Leadtools.WinForms
Imports Leadtools.Dicom
Imports Leadtools.Drawing

Public Sub PointFromImageExample()
   Dim codecs As RasterCodecs = New RasterCodecs()
   ' Load an image that has BottomLeft ViewPerspective
   Dim image As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "ULAY1.BMP"))

   Dim ImagePoint As LeadPoint = New LeadPoint(0, 0)
   ImagePoint = image.PointFromImage(RasterViewPerspective.TopLeft, ImagePoint)
   Console.WriteLine(String.Format("{0},{1}", ImagePoint.X, ImagePoint.Y))

   ImagePoint.X = 0
   ImagePoint.Y = 0
   ImagePoint = image.PointToImage(RasterViewPerspective.TopLeft, ImagePoint)
   Console.WriteLine(String.Format("{0},{1}", ImagePoint.X, ImagePoint.Y))

   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.WinForms;
using Leadtools.Dicom;
using Leadtools.Drawing;

      
public void PointFromImageExample()
{
   RasterCodecs codecs = new RasterCodecs();
   // Load an image that has BottomLeft ViewPerspective
   RasterImage image = codecs.Load(Path.Combine(ImagesPath.Path, "ULAY1.BMP"));
   LeadPoint ImagePoint = new LeadPoint(0, 0);
   ImagePoint = image.PointFromImage(RasterViewPerspective.TopLeft, ImagePoint);
   Console.WriteLine(string.Format("{0},{1}", ImagePoint.X, ImagePoint.Y));

   ImagePoint.X = 0;
   ImagePoint.Y = 0;
   ImagePoint = image.PointToImage(RasterViewPerspective.TopLeft, ImagePoint);
   Console.WriteLine(string.Format("{0},{1}", ImagePoint.X, ImagePoint.Y));

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

         // Load an image that has BottomLeft ViewPerspective
         var srcFileName = "Assets\\ULAY1.BMP";
         var image ;

         return Tools.AppInstallFolder().getFileAsync(srcFileName).then ( function (  loadFile ) {
            return codecs.loadAsync(LeadStreamFactory.create(loadFile))})
            .then ( function ( img ) {
               image = img ;

               var ImagePoint = LeadPointHelper.create(0, 0);
               ImagePoint = image.pointFromImage(RasterViewPerspective.topLeft, ImagePoint);
               console.info ( ImagePoint.x, ", ", ImagePoint.y);

               ImagePoint.x = 0;
               ImagePoint.y = 0;
               ImagePoint = image.pointToImage(RasterViewPerspective.topRight, ImagePoint);
               console.info ( ImagePoint.x, ", ", ImagePoint.y);

               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 PointFromImageExample()
{
   RasterCodecs codecs = new RasterCodecs();
   // Load an image that has BottomLeft ViewPerspective
   string srcFileName = @"Assets\ULAY1.BMP";
   StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName);
   RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile));
   LeadPoint ImagePoint = LeadPointHelper.Create(0, 0);
   ImagePoint = image.PointFromImage(RasterViewPerspective.TopLeft, ImagePoint);
   Debug.WriteLine(string.Format("{0},{1}", ImagePoint.X, ImagePoint.Y));

   ImagePoint.X = 0;
   ImagePoint.Y = 0;
   ImagePoint = image.PointToImage(RasterViewPerspective.TopLeft, ImagePoint);
   Debug.WriteLine(string.Format("{0},{1}", ImagePoint.X, ImagePoint.Y));

   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 PointFromImageExample(RasterImage image)
{
   // image should be an image that has BottomLeft ViewPerspective (ulay1.bmp)
   LeadPoint ImagePoint = new LeadPoint(0, 0);
   ImagePoint = image.PointFromImage(RasterViewPerspective.TopLeft, ImagePoint);
   Debug.WriteLine(string.Format("{0},{1}", ImagePoint.X, ImagePoint.Y));

   ImagePoint.X = 0;
   ImagePoint.Y = 0;
   ImagePoint = image.PointToImage(RasterViewPerspective.TopLeft, ImagePoint);
   Debug.WriteLine(string.Format("{0},{1}", ImagePoint.X, ImagePoint.Y));

   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 PointFromImageExample(ByVal image As RasterImage)
   ' image should be an image that has BottomLeft ViewPerspective (ulay1.bmp)
   Dim ImagePoint As LeadPoint = New LeadPoint(0, 0)
   ImagePoint = image.PointFromImage(RasterViewPerspective.TopLeft, ImagePoint)
   Debug.WriteLine(String.Format("{0},{1}", ImagePoint.X, ImagePoint.Y))

   ImagePoint.X = 0
   ImagePoint.Y = 0
   ImagePoint = image.PointToImage(RasterViewPerspective.TopLeft, ImagePoint)
   Debug.WriteLine(String.Format("{0},{1}", ImagePoint.X, ImagePoint.Y))

   image.Dispose()
End Sub
Requirements

Target Platforms

See Also

Reference

RasterImage Class
RasterImage Members

 

 


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