code: def faster_rcnn_preprocess(x):
      # Refer to the following py-faster-rcnn
      # https://github.com/rbgirshick/py-faster-rcnn/blob/master/lib/fast_rcnn/test.py#L22
      # https://github.com/rbgirshick/py-faster-rcnn/blob/master/lib/fast_rcnn/config.py#L181
      y = x.copy()
      y[:, :, :, 0] -= 102.9801
      y[:, :, :, 1] -= 115.9465
      y[:, :, :, 2] -= 122.7717
      return y
  
file_path: tensornets/tensornets/preprocess.py
imports: import numpy
label_desc: Use image node_id 9 for calling a global function with example usage: faster_rcnn_preprocess(x) and returns: y