_init  < source > ( num_iters: int = 3 use_fast_sampling: bool = False method: str = 'butterworth' order: int = 4 spatial_stop_frequency: float = 0.25 temporal_stop_frequency: float = 0.25 generator: Generator = None  )   Parameters   num_iters (int, optional, defaults to 3) —
Number of FreeInit noise re-initialization iterations.   use_fast_sampling (bool, optional, defaults to False) —
Whether or not to speedup sampling procedure at the cost 