public static class RasterBufferConverter
Public MustInherit NotInheritable Class RasterBufferConverter
public ref class RasterBufferConverter abstract sealed
This example loads an image at 24 bits per pixel, and creates a new image at 16 bits per pixel, and uses the Convert method to convert data from 24 bits per pixel to 16 bits per pixel.
using Leadtools;
using Leadtools.Codecs;
public void RasterBufferConverterExample()
{
string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp");
string destFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1_16bits.bmp");
using (RasterCodecs codecs = new RasterCodecs())
{
codecs.ThrowExceptionsOnInvalidImages = true;
// Load the image, at 24 bit per pixel.
using (RasterImage srcImage = codecs.Load(srcFileName, 24, CodecsLoadByteOrder.Bgr, 1, 1))
{
Assert.IsNotNull(srcImage);
Assert.IsTrue(srcImage.BitsPerPixel == 24);
// Create a new 16-bit image.
using (RasterImage destImage = new RasterImage(
RasterMemoryFlags.Conventional,
srcImage.Width,
srcImage.Height,
16,
srcImage.Order,
srcImage.ViewPerspective,
srcImage.GetPalette(),
IntPtr.Zero,
0))
{
Assert.IsNotNull(destImage);
Assert.IsTrue(destImage.BitsPerPixel == 16);
// Create a buffer large enough to hold a source or destination row
int bytesPerLine = Math.Max(srcImage.BytesPerLine, destImage.BytesPerLine);
byte[] buffer = new byte[bytesPerLine];
// Process each row from src to dest image
srcImage.Access();
destImage.Access();
for (int i = 0; i < srcImage.Height; i++)
{
srcImage.GetRow(i, buffer, 0, srcImage.BytesPerLine);
RasterBufferConverter.Convert(
buffer,
0,
srcImage.Width,
srcImage.BitsPerPixel,
destImage.BitsPerPixel,
srcImage.Order,
destImage.Order,
null,
null,
0);
destImage.SetRow(i, buffer, 0, destImage.BytesPerLine);
}
destImage.Release();
srcImage.Release();
// Save the destination image back to disk
codecs.Save(destImage, destFileName, RasterImageFormat.Bmp, 16);
}
}
}
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS21\Resources\Images";
}
Imports Leadtools
Imports Leadtools.Codecs
Public Sub RasterBufferConverterExample()
Dim codecs As RasterCodecs = New RasterCodecs()
codecs.ThrowExceptionsOnInvalidImages = True
Dim srcFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp")
Dim destFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1_16bits.bmp")
' Load the image, at 24 bit per pixel.
Dim srcImage As RasterImage = codecs.Load(srcFileName, 24, CodecsLoadByteOrder.Bgr, 1, 1)
Debug.Assert(srcImage.BitsPerPixel = 24)
' Create a buffer large enough to hold one row at a time.
Dim bytesPerLine As Integer = Math.Max(srcImage.BytesPerLine, destImage.BytesPerLine)
Dim buffer As Byte() = New Byte(bytesPerLine - 1) {}
' Create a new 16-bit image.
Dim destImage As RasterImage = New RasterImage(
RasterMemoryFlags.Conventional,
srcImage.Width,
srcImage.Height,
16,
srcImage.Order,
srcImage.ViewPerspective,
srcImage.GetPalette(),
IntPtr.Zero,
0)
Debug.Assert(destImage.BitsPerPixel = 16)
' Process each row from src to dest image
srcImage.Access()
destImage.Access()
Dim i As Integer = 0
Do While i < srcImage.Height
srcImage.GetRow(i, buffer, 0, srcImage.BytesPerLine)
RasterBufferConverter.Convert(
buffer,
0,
srcImage.Width,
srcImage.BitsPerPixel,
destImage.BitsPerPixel,
srcImage.Order,
destImage.Order,
Nothing,
Nothing,
0)
destImage.SetRow(i, buffer, 0, destImage.BytesPerLine)
i += 1
Loop
destImage.Release()
srcImage.Release()
' Save the destination image back to disk
codecs.Save(destImage, destFileName, RasterImageFormat.Bmp, 16)
' Clean up
srcImage.Dispose()
destImage.Dispose()
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
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