layers.py 文件源码

def upsample_filt(size):
  """Make a 2D bilinear kernel suitable for upsampling of the given (h, w) size."""
  factor = (size + 1) // 2
  if size % 2 == 1:
    center = factor - 1
  else:
    center = factor - 0.5
  og = np.ogrid[:size, :size]
  return (1 - abs(og[0] - center) / factor) * (1 - abs(og[1] - center) / factor)