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ConvertFromSourceOptions Enumeration

Summary
Options for converting a Windows Presentation Foundation (WPF) System.Windows.Media.ImageSource to a LEADTOOLS Leadtools.RasterImage object.
Syntax
C#
C++/CLI
[FlagsAttribute()] 
public enum ConvertFromSourceOptions 
[FlagsAttribute()] 
public enum class ConvertFromSourceOptions : public System.Enum, System.IComparable, System.IConvertible, System.IFormattable   
Members
ValueMemberDescription
0x00000000NoneDefault
0x00000001UseWritableBitmap

Use WriteableBitmap for image data storage.

Note:

This flag is no longer supported.

0x00000002AutoDetectAlpha

Indicates LEADTOOLS should automatically detect if the image data contains meaningful alpha channel values, and if so, set the RasterImage.PremultiplyAlpha property accordingly.

Note:

This flag is no longer supported.

0x00000004FastConvertTo1Bit

Fast conversion to 1-bit black on white. Use this flag to convert any System.Windows.Media.ImageSource to a 1-bit per pixel Leadtools.RasterImage object with black on white palette. Useful for quickly converting System.Windows.Media.ImageSource to Leadtools.RasterImage; suitable for barcode or OCR recognition.

Note:

This flag is no longer supported.

Remarks

This enumeration is used as the options for converting Windows Presentation Foundation (WPF) System.Windows.Media.ImageSource objects to LEADTOOLS Leadtools.RasterImage through the RasterImageConverter.ConvertFromSource method.

For more information refer to RasterImage and WPF.

Example
C#
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
using Leadtools.Windows.Media; 
 
public void RasterImageConverterExample() 
{ 
   string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"); 
   string destFileName1 = Path.Combine(LEAD_VARS.ImagesDir, "Image1.jpg"); 
   string destFileName2 = Path.Combine(LEAD_VARS.ImagesDir, "Image1_WPfFlipped.jpg"); 
 
   // Use LEADTOOLS to convert the source image to a format that can be loaded with WPF 
   using (RasterCodecs codecs = new RasterCodecs()) 
   { 
      codecs.Convert(srcFileName, destFileName1, RasterImageFormat.Jpeg, 0, 0, 0, null); 
   } 
 
   // Load the source image using WPF 
   BitmapImage bitmap = new BitmapImage(); 
   bitmap.BeginInit(); 
   bitmap.UriSource = new Uri(destFileName1, UriKind.Absolute); 
   bitmap.EndInit(); 
 
   Console.WriteLine("Source WPF image is loaded, pixel format is {0}", bitmap.Format); 
 
   // Convert the image to LEADTOOLS RasterImage object 
   BitmapSource source; 
   using (RasterImage raster = RasterImageConverter.ConvertFromSource(bitmap, ConvertFromSourceOptions.None)) 
   { 
      Console.WriteLine("Converted to RasterImage, bits/pixel is {0} and order is {1}", raster.BitsPerPixel, raster.Order); 
 
      // Perform image processing on the raster image using LEADTOOLS 
      FlipCommand cmd = new FlipCommand(false); 
      cmd.Run(raster); 
 
      // Convert the image back to WPF using default options 
      source = RasterImageConverter.ConvertToSource(raster, ConvertToSourceOptions.None) as BitmapSource; 
   } 
 
   Console.WriteLine("Converted back WPF, pixel format is {0}", source.Format); 
 
   // Save the image using WPF 
   using (FileStream fs = File.Create(destFileName2)) 
   { 
      JpegBitmapEncoder encoder = new JpegBitmapEncoder(); 
      encoder.QualityLevel = 30; 
      encoder.Frames.Add(BitmapFrame.Create(source)); 
      encoder.Save(fs); 
   } 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
} 
Requirements

Target Platforms

Help Version 23.0.2024.2.29
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Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.