CoreUtilities Class

Summary

Core utility class.

Syntax

Objective-C

C++

Java

public sealed class CoreUtilities

Public NotInheritable Class CoreUtilities

@interface LTCoreUtilities : NSObject

public class CoreUtilities

public ref class CoreUtilities sealed

Example

This example computes the translation parameters. The example makes the assumption that you have saved the position of the registration marks of the reference image in a file. You should modify this example and replace the manual assignment of the rmData with your own code to load the reference registration mark data before testing this example.

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Core; 
using LeadtoolsExamples.Common; 
 
public void GetTransformationParametersExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "RGSRef.cmp")); 
 
   // Prepare the command 
   SearchRegistrationMarksCommandData[] rmData = new SearchRegistrationMarksCommandData[3]; 
 
   //Mark1 
   rmData[0] = new SearchRegistrationMarksCommandData(); 
   rmData[0].Rectangle = new LeadRect(680, 20, 941 - 680, 218 - 20); 
   rmData[0].MarkDetectedPoints = new LeadPoint[1]; 
   rmData[0].Width = 31; 
   rmData[0].Height = 29; 
   rmData[0].Type = RegistrationMarkCommandType.TShape; 
   rmData[0].MinimumScale = 90; 
   rmData[0].MaximumScale = 110; 
   rmData[0].SearchMarkCount = 1; 
 
   //Mark2 
   rmData[1] = new SearchRegistrationMarksCommandData(); 
   rmData[1].Rectangle = new LeadRect(665, 790, 899 - 665, 961 - 790); 
   rmData[1].MarkDetectedPoints = new LeadPoint[1]; 
   rmData[1].Width = 31; 
   rmData[1].Height = 29; 
   rmData[1].Type = RegistrationMarkCommandType.TShape; 
   rmData[1].MinimumScale = 90; 
   rmData[1].MaximumScale = 110; 
   rmData[1].SearchMarkCount = 1; 
 
   //Mark3 
   rmData[2] = new SearchRegistrationMarksCommandData(); 
   rmData[2].Rectangle = new LeadRect(7, 1073, 298 - 7, 1246 - 1073); 
   rmData[2].MarkDetectedPoints = new LeadPoint[1]; 
   rmData[2].Width = 31; 
   rmData[2].Height = 29; 
   rmData[2].Type = RegistrationMarkCommandType.TShape; 
   rmData[2].MinimumScale = 90; 
   rmData[2].MaximumScale = 110; 
   rmData[2].SearchMarkCount = 1; 
   SearchRegistrationMarksCommand command1 = new SearchRegistrationMarksCommand(rmData); 
   command1.Run(image); 
   if ((rmData[2].MarkDetectedCount != 1) || (rmData[1].MarkDetectedCount != 1) || (rmData[0].MarkDetectedCount != 1)) 
      return; 
 
   LeadPoint[] original = 
   { 
      new LeadPoint(81400, 11300), 
      new LeadPoint(78600, 87400), 
      new LeadPoint(14300, 115400) 
   }; 
 
   LeadPoint[] detected = 
   { 
      rmData[0].MarkDetectedPoints[0], 
      rmData[1].MarkDetectedPoints[0], 
      rmData[2].MarkDetectedPoints[0] 
   }; 
 
   //Find center of mass for detected registration marks in the transformed image 
   LeadPoint[] transformed = CoreUtilities.GetRegistrationMarksCenterMass(image, detected); 
   //Find transformation parameters 
   TransformationParameters parameters = CoreUtilities.GetTransformationParameters(image, original, transformed); 
   //Apply transformation parameters to correct the image 
   ApplyTransformationParametersCommand applyCommand = new ApplyTransformationParametersCommand(parameters.XTranslation, parameters.YTranslation, parameters.Angle, parameters.XScale, parameters.YScale, 
         ApplyTransformationParametersCommandFlags.Normal); 
   applyCommand.Run(image); 
 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS21\Resources\Images"; 
}

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Core 
 
Public Sub GetTransformationParametersExample() 
   Dim codecs As New RasterCodecs() 
   codecs.ThrowExceptionsOnInvalidImages = True 
 
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "RGSRef.cmp")) 
 
   ' Prepare the command 
   Dim rmData(2) As SearchRegistrationMarksCommandData 
   ' Mark1 
   rmData(0) = New SearchRegistrationMarksCommandData 
   rmData(0).Rectangle = New LeadRect(680, 20, 941 - 680, 218 - 20) 
   Dim pt0(0) As LeadPoint 
   rmData(0).MarkDetectedPoints = pt0 
   rmData(0).Width = 31 
   rmData(0).Height = 29 
   rmData(0).Type = RegistrationMarkCommandType.TShape 
   rmData(0).MinimumScale = 90 
   rmData(0).MaximumScale = 110 
   rmData(0).SearchMarkCount = 1 
 
   ' Mark2 
   rmData(1) = New SearchRegistrationMarksCommandData 
   rmData(1).Rectangle = New LeadRect(665, 790, 899 - 665, 961 - 790) 
   Dim pt1(0) As LeadPoint 
   rmData(1).MarkDetectedPoints = pt1 
   rmData(1).Width = 31 
   rmData(1).Height = 29 
   rmData(1).Type = RegistrationMarkCommandType.TShape 
   rmData(1).MinimumScale = 90 
   rmData(1).MaximumScale = 110 
   rmData(1).SearchMarkCount = 1 
 
   ' Mark3 
   rmData(2) = New SearchRegistrationMarksCommandData 
   rmData(2).Rectangle = New LeadRect(7, 1073, 298 - 7, 1246 - 1073) 
   Dim pt2(0) As LeadPoint 
   rmData(2).MarkDetectedPoints = pt2 
   rmData(2).Width = 31 
   rmData(2).Height = 29 
   rmData(2).Type = RegistrationMarkCommandType.TShape 
   rmData(2).MinimumScale = 90 
   rmData(2).MaximumScale = 110 
   rmData(2).SearchMarkCount = 1 
   Dim command1 As New SearchRegistrationMarksCommand(rmData) 
   command1.Run(leadImage) 
 
   If ((rmData(2).MarkDetectedCount <> 1) OrElse (rmData(1).MarkDetectedCount <> 1) OrElse (rmData(0).MarkDetectedCount <> 1)) Then 
      Return 
   End If 
 
   Dim original() As LeadPoint = 
   { 
      New LeadPoint(81400, 11300), 
      New LeadPoint(78600, 87400), 
      New LeadPoint(14300, 115400) 
   } 
 
   Dim detected() As LeadPoint = 
   { 
      rmData(0).MarkDetectedPoints(0), 
      rmData(1).MarkDetectedPoints(0), 
      rmData(2).MarkDetectedPoints(0) 
   } 
 
   ' Find center of mass for detected registration marks in the transformed image 
   Dim transformed() As LeadPoint = CoreUtilities.GetRegistrationMarksCenterMass(leadImage, detected) 
   ' Find transformation parameters 
   Dim parameters As TransformationParameters = CoreUtilities.GetTransformationParameters(leadImage, original, transformed) 
   ' Apply transformatin parameters to correct the image 
   Dim applyCommand As New ApplyTransformationParametersCommand(parameters.XTranslation, parameters.YTranslation, 
                                                                parameters.Angle, parameters.XScale, 
                                                                parameters.YScale, ApplyTransformationParametersCommandFlags.Normal) 
 
   applyCommand.Run(leadImage) 
 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\LEADTOOLS21\Resources\Images" 
End Class

Requirements

Target Platforms

Reference

CoreUtilities Members

Leadtools.ImageProcessing.Core Namespace

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Help Version 21.0.2021.7.2

Leadtools.ImageProcessing.Core Assembly

Introduction

Getting Started

Namespaces

Leadtools.ImageProcessing.Core Namespace

Assemblies