return filter_chroma_init( arg );
if ( !strcmp( id, "chroma_hold" ) )
return filter_chroma_hold_init( arg );
- if ( !strcmp( id, "mono" ) )
+ if ( !strcmp( id, "threshold" ) )
return filter_mono_init( arg );
if ( !strcmp( id, "shape" ) )
return filter_shape_init( arg );