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ResizeRegionCommand Class

Summary

Resizes an image region by a specific number of pixels.

Remarks
  • This command keeps the same image and resizes the image region that it references.
  • This command 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.
  • This command supports 32-bit grayscale images.
Example

Run the ResizeRegionCommand on an image.

C#
VB
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Effects; 
 
public void ResizeRegionCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "IMAGE1.CMP")); 
 
   // Prepare the command 
   ResizeRegionCommand command = new ResizeRegionCommand(); 
   LeadRect rRgnRect = new LeadRect(80, 20, 100, 40);  //Rectangle that defines the region . 
   //Create an elliptical region. 
   image.AddEllipseToRegion(null, rRgnRect, Leadtools.RasterRegionCombineMode.Set); 
   command.AsFrame = false; 
   //Contract the image region by 20 pixels. 
   command.Dimension = 20; 
   command.Type = ResizeRegionCommandType.ContractRegion; 
   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"; 
} 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Effects 
      Leadtools.Examples.Support.SetLicense() 
 
Public Sub ResizeRegionCommandExample() 
   Dim codecs As New RasterCodecs() 
   codecs.ThrowExceptionsOnInvalidImages = True 
 
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "IMAGE1.CMP")) 
 
   ' Prepare the command 
   Dim command As ResizeRegionCommand = New ResizeRegionCommand 
   Dim rRgnRect As LeadRect = New LeadRect(20, 20, 100, 100)   'Rectangle that defines the region . 
   'Create an elliptical region. 
   leadImage.AddEllipseToRegion(Nothing, rRgnRect, RasterRegionCombineMode.Set) 
   command.AsFrame = False 
   'Contract the image region by 20 pixels. 
   command.Dimension = 20 
   command.Type = ResizeRegionCommandType.ContractRegion 
   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

Requirements

Target Platforms

Help Version 19.0.2017.10.27
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