Slice Event

Summary

Gets or set the optional delegate method for additional processing.

Syntax

C++/CLI

Python

public event EventHandler<SliceCommandEventArgs> Slice

public: 
event EventHandler<SliceCommandEventArgs^>^ Slice

def Slice(sender,e): # sender: SliceCommand e: SliceCommandEventArgs

Event Data

The event handler receives an argument of type SliceCommandEventArgs containing data related to this event. The following SliceCommandEventArgs properties provide information specific to this event.

Property	Description
Cancel	Gets or sets the value which indicates whether or not to continue with the slicing command.
DeskewAngle	Gets the angle of deskewing.
Image	Affected image.
SliceImage	Gets the sliced images.
SliceRectangle	Gets the bounding rectangle of the extracted slice.

Example

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
public void SliceCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg")); 
 
   // Prepare the command 
   SliceCommand cmd = new SliceCommand(); 
   cmd.FillColor = new RasterColor(0, 0, 0); 
   cmd.MaximumDeskewAngle = 40; 
   cmd.Flags = SliceCommandFlags.Bicubic | SliceCommandFlags.WithoutCut | SliceCommandFlags.DeskewImage; 
   cmd.Slice += new EventHandler<SliceCommandEventArgs>(SliceEventExample_S1); 
 
   // Apply the slice command on the image. 
   cmd.Run(image); 
 
   // Print out the deskew amount. 
   Console.WriteLine("Deskew Angle = {0}", cmd.DeskewAngle); 
 
} 
 
private void SliceEventExample_S1(object sender, SliceCommandEventArgs e) 
{ 
   // create a region around the slice 
   if (e.Image.HasRegion) 
      e.Image.AddRectangleToRegion(null, e.SliceRectangle, Leadtools.RasterRegionCombineMode.Xor); 
   else 
      e.Image.AddRectangleToRegion(null, e.SliceRectangle, Leadtools.RasterRegionCombineMode.Set); 
 
   // print out the deskew angle 
   Console.WriteLine("The rotation Amount is {0}", e.DeskewAngle); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}

Requirements

Target Platforms

Reference

SliceCommand Class

SliceCommand Members

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Help Version 23.0.2024.3.3

Leadtools.ImageProcessing.Core Assembly

Introduction

Getting Started

Namespaces

Leadtools.ImageProcessing.Core Namespace

Assemblies