ExpandContentCommand Class

Summary

Detects the boundaries of the document's content and expands it to fill the entire page space.

Syntax

Objective-C

C++/CLI

Python

public class ExpandContentCommand : RasterCommand

@interface LTExpandContentCommand : LTRasterCommand

public ref class ExpandContentCommand : public RasterCommand

class ExpandContentCommand(RasterCommand):

Remarks

Expands page's content while maintaining the aspect ratio of the original size.
This function can only process entire images. It does not support regions.
This function supports 24-bit and 36-bit color images and 8-bit grayscale images.
Converts the input image to a 1-bit image.

Example

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Core; 
 
public void AutoPageSplitterCommandExample() 
{ 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   //Load an image 
   RasterImage DocImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "ScannedBook.jpg")); 
 
   //Binarize image 
   ColorResolutionCommand command = new ColorResolutionCommand(); 
   command.BitsPerPixel = 1; 
   command.Run(DocImage); 
 
   // Clean up border 
   BorderRemoveCommand BorderCommand = new BorderRemoveCommand(); 
   BorderCommand.Flags = BorderRemoveCommandFlags.AutoRemove; 
   BorderCommand.Run(DocImage); 
 
   // Split pages 
   AutoPageSplitterCommand SplitCommand = new AutoPageSplitterCommand(); 
   SplitCommand.Run(DocImage); 
 
   // Get left Page 
   RasterImage LeftPage = SplitCommand.FirstImage; 
 
   //Expand the content of the left page  
   ExpandContentCommand ExpandComment = new ExpandContentCommand(); 
   ExpandComment.Run(LeftPage); 
 
   // Save the resulting image 
   codecs.Save(LeftPage, Path.Combine(LEAD_VARS.ImagesDir, "LeftPage.bmp"), RasterImageFormat.Bmp, 24); 
 
   // Save the right page 
   codecs.Save(SplitCommand.SecondImage, Path.Combine(LEAD_VARS.ImagesDir, $"RightPageAt{SplitCommand.SplittingCoordinate}.bmp"), RasterImageFormat.Bmp, 24); 
          
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}

Requirements

Target Platforms

Reference

ExpandContentCommand Members

Leadtools.ImageProcessing.Core Namespace

Download our FREE evaluation

Help Version 23.0.2024.3.3

Leadtools.ImageProcessing.Core Assembly

Introduction

Getting Started

Namespaces

Leadtools.ImageProcessing.Core Namespace

Assemblies