Process ( self,  data )

Process image

ProcessHeader ( self,  h )

Process header

loadfries (
        self,
        efn,
        xsize,
        ysize,
        )

Load the fries from the file named in efn. Internal use only.

xsize and ysize are the size of the input frame format.

xinit (
        self,
        *arg,
        *kw,
        )

Xtra initialisation: store some startup data