Using Aspose.Imaging for .NET you can easily convert from J2K(Wavelet Compressed Image) to other formats...J2K to EMZ J2K to WMZ J2K to TGA J2K to SVGZ J2K to CANVAS J2K...
You can use Aspose.Imaging for Python via .NET library to convert from a variety of formats to JP2...to JP2 JPEG to JP2 PNG to JP2 TGA to JP2 TIF to JP2 TIFF to JP2...