You can use Aspose.Imaging for Python via .NET library to convert from a variety of formats to WMZ...to WMZ CMX to WMZ OTG to WMZ ODG to WMZ ICO to WMZ...
Using Aspose.Imaging for .NET library it is easy to convert to J2K(Wavelet Compressed Image) from other supported image formats...to J2K CMX to J2K OTG to J2K ODG to J2K ICO to J2K...