Using Aspose.Imaging for .NET library it is easy To convert To J2K(Wavelet Compressed Image) from other supported image formats...J2K DICOM to J2K DJVU to J2K DNG to J2K EMF to J2K EMZ to J2K...to J2K JP2 to J2K JPG to J2K JPEG to J2K PNG to J2K TGA to J2K...