Jpeg2kWriter Class

Syntax

Public NotInheritable Class Jpeg2kWriter _
	Inherits FormatWriter

public sealed class Jpeg2kWriter : FormatWriter

Remarks

JPEG2000 is an image format which implements wavelet-based compression algorithm. This algorithm provides high compression ratio with better quality than JPEG. This compression is also lossy, however JPEG2000 artifacts are looking visually better comparing to JPEG.

Graphics Mill for .NET can save bitmaps to JPEG2000 format in two color spaces:

• RGB;
• Grayscale;

These bitmaps can be both extended (16 bit per channel) and non-extended (8 bit per channel). Also, these bitmaps may contain an alpha channel.

Examples

You can use Jpeg2kWriter class instead of the Save(String, IEncoderOptions) method of the Bitmap. In particular it enables you to save the image asynchronously.

The Jpeg2kWriter class usage is demonstrated below:

Dim bitmap As New Aurigma.GraphicsMill.Bitmap("c:\Mountain.jpg")

Dim writer As New Aurigma.GraphicsMill.Codecs.Jpeg2kWriter("C:\Mountain2.jp2")

Dim frame As New Aurigma.GraphicsMill.Codecs.Jpeg2kFrame
frame.Rate = 0.1
frame.SetBitmap(bitmap)

bitmap.Dispose()

writer.AddFrame(frame)

frame.Dispose()

writer.Dispose()

using (Aurigma.GraphicsMill.Bitmap bitmap = 
            new Aurigma.GraphicsMill.Bitmap(@"c:\Mountain.jpg"))
{
    using (Aurigma.GraphicsMill.Codecs.Jpeg2kWriter writer = 
        new Aurigma.GraphicsMill.Codecs.Jpeg2kWriter())
    {
        writer.Open(@"C:\Mountain2.jp2");

        using (Aurigma.GraphicsMill.Codecs.Jpeg2kFrame frame = 
                    new Aurigma.GraphicsMill.Codecs.Jpeg2kFrame())
        {
            frame.Rate = 0.1f;
            frame.SetBitmap(bitmap);

            writer.AddFrame(frame);
        }
    }
}

Inheritance Hierarchy

Thread Safety

Object Model

Supported Pixel Formats

See Also

Reference

• Jpeg2kWriter Members
• Aurigma.GraphicsMill.Codecs Namespace