class_docstr: Benchmark ridge filters in scikit-image.
class_docstr_tok: ["Benchmark","ridge","filters","in","scikit-image","."]
code: def setup(self):
      # Ensure memory footprint of lazy import is included in reference
      self._ = (
          filters.meijering,
          filters.sato,
          filters.frangi,
          filters.hessian,
      )
      self.image = color.rgb2gray(data.retina())
  
imports: import numpy
  from skimage import data, filters, color
  from skimage.filters.thresholding import threshold_li
label_desc: Use image node_id 1 for calling the RidgeFilters obj's underlying member method code with example usage: obj.setup() without return types