How to redefine input node?

How to redefine the name of the input node? I check the input node name and output node name of the generated .pb file as follows:
```
Found 1 possible inputs: (name=input_1, type=float(1), shape=[?,?,?,3])
Found 2 possible outputs: (name=conv2d_10/BiasAdd, op=BiasAdd) (name=conv2d_13/BiasAdd, op=BiasAdd)
```
There is a problem with the shape of the input node. How do I define it?