public static void Startup()
Public Shared Sub Startup()
public:
static void Startup();
This static method must be called before calling any other ColorConversion methods. This usually occurs at the start of your application.
This example will convert an image to CMYK color space and save the converted image to disk.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ColorConversion;
public void StartupExample()
{
// Initialize the RasterCodecs class
RasterCodecs codecs = new RasterCodecs();
// StartUp the ColorConversion.
RasterColorConverterEngine.Startup();
// The input file name
string inputFileName = Path.Combine(LEAD_VARS.ImagesDir, "image1.cmp");
// load the input image as Bgr.
RasterImage bgrImage = codecs.Load(inputFileName, 24, CodecsLoadByteOrder.Bgr, 1, 1);
// Image buffer array
byte[] bgrBuffer = new byte[bgrImage.BytesPerLine * bgrImage.Height];
bgrImage.Access();
// get image buffer
for (int i = 0; i < bgrImage.Height; i++)
bgrImage.GetRow(i, bgrBuffer, i * bgrImage.BytesPerLine, bgrImage.BytesPerLine);
bgrImage.Release();
// Initialize a new Converter object
RasterColorConverterEngine converter = new RasterColorConverterEngine();
byte[] cmykBuffer = new byte[bgrImage.Height * bgrImage.Width * 4];
try
{
// Start the color conversion
converter.Start(ConversionColorFormat.Bgr, ConversionColorFormat.Cmyk, null);
// convert the image buffer
converter.Convert(bgrBuffer, // input buffer
0, // offset from the beginning of the source buffer
cmykBuffer, // output buffer
0, // offset from the beginning of the destination buffer
bgrImage.Width, // pixels width
bgrImage.Height, // pixels height
bgrImage.BytesPerLine - (bgrImage.Width * (bgrImage.BitsPerPixel / 8)),
0); // 0 bytes align
// stop the conversion
converter.Stop();
// Initialize an image to hold the converted buffer.
RasterImage cmykImage = new RasterImage(RasterMemoryFlags.Conventional, bgrImage.Width, bgrImage.Height, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, null, IntPtr.Zero, 0);
// Start the color conversion
converter.Start(ConversionColorFormat.Cmyk, ConversionColorFormat.Bgr, null);
// convert the image buffer
converter.ConvertToImage(cmykBuffer, // converted buffer
0, // offset from the beginning of the source buffer
cmykImage, // image to be save
bgrImage.Width, // pixels width
bgrImage.Height, // pixels height
0, // 0 bytes align
bgrImage.BytesPerLine - (bgrImage.Width * (bgrImage.BitsPerPixel / 8)));
// stop the conversion
converter.Stop();
// the output File Name.
string outputFileName = Path.Combine(LEAD_VARS.ImagesDir, "ResultImage.bmp");
// Save the result image.
codecs.Save(cmykImage, outputFileName, RasterImageFormat.Bmp, 24);
// dispose of the used images
bgrImage.Dispose();
cmykImage.Dispose();
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
// Shutdown the ColorConversion.
RasterColorConverterEngine.Shutdown();
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS21\Resources\Images";
}
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ColorConversion
Public Sub StartupExample()
' Initialize the RasterCodecs class
Dim codecs As New RasterCodecs()
' StartUp the ColorConversion.
RasterColorConverterEngine.Startup()
' The input file name
Dim inputFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp")
' load the input image as Bgr.
Dim bgrImage As RasterImage = codecs.Load(inputFileName, 24, CodecsLoadByteOrder.Bgr, 1, 1)
' Image buffer array
'Dim bgrBuffer As Byte() = New Byte(bgrImage.BytesPerLine * bgrImage.Height - 1) {}
Dim bgrBuffer(bgrImage.BytesPerLine * bgrImage.Height) As Byte
' get image buffer
bgrImage.Access()
For i As Integer = 0 To bgrImage.Height - 1
bgrImage.GetRow(i, bgrBuffer, (i * bgrImage.BytesPerLine), bgrImage.BytesPerLine)
Next
bgrImage.Release()
' Initialize a new Converter object
Dim converter As New RasterColorConverterEngine()
' Cmyk buffer array
Dim cmykBuffer As Byte() = New Byte(bgrImage.Height * bgrImage.Width * 4 - 1) {}
Try
' Start the color conversion
converter.Start(ConversionColorFormat.Bgr, ConversionColorFormat.Cmyk, Nothing)
' convert the image buffer
converter.Convert(bgrBuffer,
0,
cmykBuffer,
0,
bgrImage.Width,
bgrImage.Height,
CInt(bgrImage.BytesPerLine - (bgrImage.Width * (bgrImage.BitsPerPixel / 8))),
0)
' stop the conversion
converter.[Stop]()
' Initialize an image to hold the converted buffer.
Dim cmykImage As New RasterImage(RasterMemoryFlags.Conventional, bgrImage.Width, bgrImage.Height, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft,
Nothing, IntPtr.Zero, 0)
' Start the color conversion
converter.Start(ConversionColorFormat.Cmyk, ConversionColorFormat.Bgr, Nothing)
converter.ConvertToImage(cmykBuffer,
0,
cmykImage,
bgrImage.Width,
bgrImage.Height,
0,
CInt(bgrImage.BytesPerLine - (bgrImage.Width * (bgrImage.BitsPerPixel / 8))))
' stop the conversion
converter.Stop()
' the output File Name.
Dim outputFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "ResultImage.bmp")
' Save the result image.
codecs.Save(cmykImage, outputFileName, RasterImageFormat.Bmp, 24)
' dispose of the used images
bgrImage.Dispose()
cmykImage.Dispose()
Catch ex As Exception
MessageBox.Show(ex.ToString())
End Try
' Shutdown the ColorConversion.
RasterColorConverterEngine.Shutdown()
End Sub
Public NotInheritable Class LEAD_VARS
Public Const ImagesDir As String = "C:\LEADTOOLS21\Resources\Images"
End Class
Help Collections
Raster .NET | C API | C++ Class Library | HTML5 JavaScript
Document .NET | C API | C++ Class Library | HTML5 JavaScript
Medical .NET | C API | C++ Class Library | HTML5 JavaScript
Medical Web Viewer .NET
Multimedia
Direct Show .NET | C API | Filters
Media Foundation .NET | C API | Transforms
Supported Platforms
.NET, Java, Android, and iOS/macOS Assemblies
Imaging, Medical, and Document
C API/C++ Class Libraries
Imaging, Medical, and Document
HTML5 JavaScript Libraries
Imaging, Medical, and Document