code: def binary_sigmoid(self, op_list):
      for op in op_list:
          if op.node.op == "Greater" or op.node.op == "Select":
              self._nchw_to_nhwc(op)
      return op_list[-1]
  
imports: import numpy
  import tensorflow.compat.v1
  from tensorflow.core.framework.tensor_pb2 import TensorProto
  from tensorflow.core.framework.tensor_shape_pb2 import TensorShapeProto
label_desc: Use image node_id 29 for calling the RefineGraph obj's underlying member method code with example usage: obj.binary_sigmoid(op_list) and returns: op_list