code: def gauss_blur2d(x, s):
      "Apply gaussian_blur2d kornia filter"
      s2 = int(s / 4) * 2 + 1
      x2 = unsqueeze(x, dim=0, n=4 - x.dim())
      res = kornia.filters.gaussian_blur2d(
          x2, (s2, s2), (s, s), "replicate"
      )
      return res.squeeze()
  
imports: from __future__ import annotations
  from ..basics import *
  from ..vision.all import *
  from ..data.transforms import *
  import pydicom, kornia, skimage
  from pydicom.dataset import Dataset
  from pydicom.tag import BaseTag
  from pydicom.multival import MultiValue
  from PIL import Image
label_desc: Use image node_id 17 for calling a global function with example usage: gauss_blur2d(x, s) and returns: res