PerspectiveCommand Class

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

public class PerspectiveCommand : Leadtools.ImageProcessing.RasterCommand, Leadtools.ImageProcessing.IRasterCommand

'Declaration
 
Public Class PerspectiveCommand 
   Inherits Leadtools.ImageProcessing.RasterCommand
   Implements Leadtools.ImageProcessing.IRasterCommand

'Usage
 
Dim instance As PerspectiveCommand

public sealed class PerspectiveCommand : Leadtools.ImageProcessing.IRasterCommand

function Leadtools.ImageProcessing.SpecialEffects.PerspectiveCommand()

public ref class PerspectiveCommand : public Leadtools.ImageProcessing.RasterCommand, Leadtools.ImageProcessing.IRasterCommand

This method 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.
If the image has a region, this method works only on the region. If the image does not have a region, this method works on the entire image.
This method does not support signed data images.
This command does not support 32-bit grayscale images.

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

Public Sub PerspectiveCommandExample()
   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 cornerPoints() As LeadPoint
   ReDim cornerPoints(3)
   cornerPoints(0).X = CInt(leadImage.Width * 3 / 9)
   cornerPoints(0).Y = CInt(leadImage.Height * 1 / 12)
   cornerPoints(1).X = CInt(leadImage.Width * 3 / 4)
   cornerPoints(1).Y = CInt(leadImage.Height * 2 / 12)
   cornerPoints(2).X = CInt(leadImage.Width * 2 / 10)
   cornerPoints(2).Y = CInt(leadImage.Height * 8 / 10)
   cornerPoints(3).X = CInt(leadImage.Width * 10 / 11)
   cornerPoints(3).Y = CInt(leadImage.Height * 7 / 10)
   Dim command As New PerspectiveCommand
   command.CornerPoints = cornerPoints
   command.FillColor = New RasterColor(255, 255, 255)
   command.Type = PerspectiveCommandType.Color
   command.Run(leadImage)
   codecs.Save(leadImage, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24)

End Sub

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

public void PerspectiveCommandExample()
   {
      // Load an image
      RasterCodecs codecs = new RasterCodecs();
      codecs.ThrowExceptionsOnInvalidImages = true;

      RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg"));

      // Prepare the command
      LeadPoint[] cornerPoint = new LeadPoint[4];
      cornerPoint[0].X = image.Width * 3 / 9;
      cornerPoint[0].Y = image.Height * 1 / 12;
      cornerPoint[1].X = image.Width * 3 / 4;
      cornerPoint[1].Y = image.Height * 2 / 12;
      cornerPoint[2].X = image.Width * 2 / 10;
      cornerPoint[2].Y = image.Height * 8 / 10;
      cornerPoint[3].X = image.Width * 10 / 11;
      cornerPoint[3].Y = image.Height * 7 / 10;
      PerspectiveCommand command  = new PerspectiveCommand();
      command.CornerPoints = cornerPoint;
      command.FillColor = new RasterColor(255, 255, 255);
      command.Type = PerspectiveCommandType.Color;
      command.Run(image);
      codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24);

   }

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

[TestMethod]
public async Task PerspectiveCommandExample()
{
   // Load an image
   RasterCodecs codecs = new RasterCodecs();
   codecs.ThrowExceptionsOnInvalidImages = true;
   string srcFileName = @"Assets\Image1.cmp";
   StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName);
   RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile));

   // Prepare the command
   LeadPoint[] cornerPoint = new LeadPoint[4];
   cornerPoint[0].X = image.Width * 3 / 9;
   cornerPoint[0].Y = image.Height * 1 / 12;
   cornerPoint[1].X = image.Width * 3 / 4;
   cornerPoint[1].Y = image.Height * 2 / 12;
   cornerPoint[2].X = image.Width * 2 / 10;
   cornerPoint[2].Y = image.Height * 8 / 10;
   cornerPoint[3].X = image.Width * 10 / 11;
   cornerPoint[3].Y = image.Height * 7 / 10;
   PerspectiveCommand command  = new PerspectiveCommand();
   command.CornerPoints = cornerPoint;
   command.FillColor = RasterColorHelper.Create(255, 255, 255);
   command.Type = PerspectiveCommandType.Color;
   command.Run(image);

   string destFileName = @"result.bmp";
   StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(destFileName);
   await codecs.SaveAsync(image, LeadStreamFactory.Create(saveFile), RasterImageFormat.Bmp, 24);
}

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference