Make radial-lanczos3 filter scale properly
Make radial-lanczos3 filter scale properly

YangYangTL/oiio,OpenImageIO/oiio,lgritz/oiio,bdeluca/oiio,YangYangTL/oiio,micler/oiio,lgritz/oiio,bdeluca/oiio,YangYangTL/oiio,YangYangTL/oiio,lgritz/oiio,micler/oiio,micler/oiio,bdeluca/oiio,OpenImageIO/oiio,OpenImageIO/oiio,micler/oiio,lgritz/oiio,bdeluca/oiio,OpenImageIO/oiio