JPEG 2000 support in C#.NET

Question

It seems that .NET can\'t open JP2 (Jpeg 2000) files using the GDI library. I\'ve searched on google but can\'t find any libraries or example code to do this.

Anybod

Answer 1

You can use Jpeg2000.Net library if you need a fully managed solution without unsafe blocks. Disclaimer: I am working on this library, the library is commercial.

Here is the basic sample for decoding of JPEG 2000 image to TIFF:

string fileName = ...; // path to JPEG 2000 image
using (var image = new J2kImage(fileName))
{
    var options = new J2kDecodingOptions
    {
        UpsampleComponents = true
    };

    // Alternatively, you can decode only part of the image using J2kImage.DecodeArea method
    var imageData = image.Decode(options);
    imageData.Save(tiffFileName, J2kOutputFormat.Tiff);
}