code: def _get_bilinear_interp_params(y, x, y_low, x_low, y_high, x_high):
      ly = y - y_low
      lx = x - x_low
      hy = y_high - y
      hx = x_high - x
      w1 = hy * hx
      w2 = hy * lx
      w3 = ly * hx
      w4 = ly * lx
      return w1, w2, w3, w4
  
imports: import numbers
  import numpy
  import six
  import chainer
  from chainer.backends import cuda
  from chainer import function
  from chainer import utils
  from chainer.utils import type_check
label_desc: Use image node_id 3 for calling a global function with example usage: _get_bilinear_interp_params(y, x, y_low, x_low, y_high, x_high) and returns: w1,  w2,  w3,  w4