PerspectiveCommand Class

C#
Visual Basic
WinRT C#
Objective-C
Java
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.

Run the PerspectiveCommand on an image.

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

Copy Code

Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing.SpecialEffects

<TestMethod()> _
Public Sub PerspectiveCommandExample()
   Dim codecs As New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "sample1.cmp"))

   ' 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

using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.SpecialEffects;

[TestMethod]
public void PerspectiveCommandExample()
{
   // Load an image
   RasterCodecs codecs = new RasterCodecs();
   codecs.ThrowExceptionsOnInvalidImages = true;
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "sample1.cmp"));

   // 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";
}

using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.SpecialEffects;

[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

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