class_docstr: Benchmark for restoration routines in scikit image.
code: def time_denoise_nl_means_fast_f64(self):
      restoration.denoise_nl_means(
          self.volume_f64,
          patch_size=3,
          patch_distance=2,
          sigma=self.sigma,
          h=0.7 * self.sigma,
          fast_mode=True,
          **_channel_kwarg(False),
      )
  
imports: import inspect
  import numpy
  import scipy.ndimage
  from skimage.data import camera
  from skimage import restoration, data, color
  from skimage.morphology import binary_dilation
  from .None import _channel_kwarg, _skip_slow
label_desc: Use image node_id 5 for calling the RestorationSuite obj's underlying member method code with example usage: obj.time_denoise_nl_means_fast_f64() without return types