code: def col2im(col, sy, sx, ph, pw, h, w, dy=1, dx=1):
      fn = col2im_gpu if isinstance(col, cuda.ndarray) else col2im_cpu
      return fn(col, sy, sx, ph, pw, h, w, dy, dx)
  
file_path: chainer/chainer/utils/conv.py
imports: import numpy
  import six
  from chainer.backends import cuda
label_desc: Use image node_id 8 for calling a global function with example usage: col2im(col, sy, sx, ph, pw, h, w, dy, dx) and returns: fn