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ConvertFromImage Method

Summary

Creates a new Leadtools.RasterImage from the specified existing GDI+ System.Drawing.Image object.

Syntax

C#
VB
C++
public static RasterImage ConvertFromImage( 
   Image image, 
   ConvertFromImageOptions options 
) 
Public Shared Function ConvertFromImage( _ 
   ByVal image As Image, _ 
   ByVal options As Leadtools.Drawing.ConvertFromImageOptions _ 
) As Leadtools.RasterImage 

Parameters

image
The System.Drawing.Image from which to create the new Leadtools.RasterImage.

options
The conversion options.

Remarks

To convert a LEADTOOLS Leadtools.RasterImage to GDI+ image, use ConvertToImage.

For more information refer to RasterImage and GDI/GDI+.

Example

This example converts between a Leadtools.RasterImage and a GDI+ image.

C#
VB
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Drawing; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Color; 
 
public void ConvertFromImageExample() 
{ 
   RasterCodecs codecs = new RasterCodecs(); 
 
   string destFileName = Path.Combine(LEAD_VARS.ImagesDir, "ConvertFromImage.bmp"); 
 
   // Create a GDI+ image 
   using (Bitmap btmp = new Bitmap(320, 200)) 
   { 
      using (Graphics g = Graphics.FromImage(btmp)) 
      { 
         g.Clear(Color.Yellow); 
         g.FillEllipse(Brushes.Red, new Rectangle(0, 0, btmp.Width, btmp.Height)); 
 
         // Convert this image to RasterImage 
 
         using (RasterImage image = RasterImageConverter.ConvertFromImage(btmp, ConvertFromImageOptions.None)) 
         { 
            // Save it 
            codecs.Save(image, destFileName, RasterImageFormat.Bmp, 0); 
         } 
      } 
   } 
 
   // Clean up 
   codecs.Dispose(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
} 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.Drawing 
Imports Leadtools.ImageProcessing 
Imports Leadtools.ImageProcessing.Color 
 
Public Sub ConvertFromImageExample() 
   Dim codecs As New RasterCodecs() 
 
   Dim destFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "ConvertFromImage.bmp") 
 
   ' Create a GDI+ image 
   Using btmp As Bitmap = New Bitmap(320, 200) 
      Using g As Graphics = Graphics.FromImage(btmp) 
         g.Clear(Color.Yellow) 
         g.FillEllipse(Brushes.Red, New Rectangle(0, 0, btmp.Width, btmp.Height)) 
 
         ' Convert this image to RasterImage 
 
         Using image As RasterImage = RasterImageConverter.ConvertFromImage(btmp, ConvertFromImageOptions.None) 
            ' Save it 
            codecs.Save(image, destFileName, RasterImageFormat.Bmp, 0) 
         End Using 
      End Using 
   End Using 
 
   ' Clean up 
   codecs.Dispose() 
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 19.0.2017.10.18
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Leadtools.Drawing Assembly