ConvertImage(RasterImage) Method

Summary

Converts image data from a RasterImage based on its ICC profile. The output will be in the same RasterImage.

Syntax

C++/CLI

Python

public void ConvertImage( 
   RasterImage image 
)

public:  
   static void ConvertImage( 
      RasterImage^ image 
   )

def ConvertImage(self,image):

Parameters

image

A RasterImage object holding the input data and ICC profile. This image will also hold the output data.

Remarks

There are other conversion methods available in the LEADTOOLS Color Conversion toolkit, however, to get optimal conversion results use ConvertImage(RasterImage,RasterImage) or ConvertImage(RasterImage,RasterImage) as they rely on the embedded ICC profile of the source RasterImage. Here is a scenario where these two methods are invaluable:

An image is loaded to a viewer.
The image in the viewer displays colors that are visibly off from a reference image.
To correct the colors, the source image is converted using the embedded ICC profile with one of these two methods.

image should be allocated and be 24-bits per pixel.

The conversion engine should have already been started by calling Start. The input and output formats for the conversion engine should be BGR/RGB for predictable results. Other types of conversion (LAB, CMYK, etc.) might have undesired results.

You can perform the output into another RasterImage using ConvertImage(RasterImage,RasterImage).

Example

This example loads a source file containing an embedded ICC profile. The image data will be converted using the ConvertImage(RasterImage) method.

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ColorConversion; 
 
using Leadtools.ImageProcessing; 
 
public string outputFile = Path.Combine(LEAD_VARS.ImagesDir, "ConvertImage.png"); 
 
public void ConvertImageExample() 
{ 
   // StartUp the ColorConversion.  
   RasterColorConverterEngine.Startup(); 
 
   // Input file name 
   string inputFileName = Path.Combine(LEAD_VARS.ImagesDir, "11800-Embedded_RGB.png"); 
 
   // Load the original image 
   using (RasterCodecs codecs = new RasterCodecs()) 
   using (RasterImage image = codecs.Load(inputFileName, 24, CodecsLoadByteOrder.Bgr, 1, 1)) 
   { 
      // Set the active method 
      ConversionParameters conversionParameters = new ConversionParameters(); 
      conversionParameters.Method = ConversionMethodFlags.UseCustomIcc; 
      conversionParameters.ActiveMethod = ConversionMethodFlags.UseCustomIcc; 
 
      // Read the embedded profile from image on disk 
      bool hasProfile = IccProfileExtended.ImageHasIccProfile(inputFileName, 1); 
      Debug.WriteLine("Profile present:\t" + hasProfile); 
      IccProfileExtended icc = new IccProfileExtended(); 
      icc.ReadFromImage(inputFileName, 1); 
 
      // Use the image profile as the input profile 
      conversionParameters.InputProfileData = icc.Data; 
 
      // Convert the image 
      using (RasterColorConverterEngine colorConverterEngine = new RasterColorConverterEngine()) 
      { 
         colorConverterEngine.Start(ConversionColorFormat.Bgr, ConversionColorFormat.Bgr, conversionParameters); 
         colorConverterEngine.ConvertImage(image); 
         colorConverterEngine.Stop(); 
      } 
 
      // Save output image 
      codecs.Save(image, outputFile, image.OriginalFormat, image.BitsPerPixel); 
 
      // Shutdown the ColorConversion 
      RasterColorConverterEngine.Shutdown(); 
   } 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}

Requirements

Target Platforms

ConvertImage(RasterImage) Method

Summary

Syntax

Parameters

Example

See Also

Reference