def make_simple_model(self) -> Model:
graph = Graph()
# two inputs
x = Input(
'input',
[1, 5, 5, 3],
Float32(),
)
w = Constant(
'weight',
Float32(),
np.zeros([1, 2, 2, 3]),
dimension_format='NHWC',
)
# Conv
conv = Conv('conv', [1, 4, 4, 1],
Float32(), {
'X': x,
'W': w
},
kernel_shape=[2, 2])
# One output
y = Output('output', [1, 4, 4, 1], Float32(), {'input': conv})
# add ops to the graph
graph.add_op_and_inputs(y)
model = Model()
model.graph = graph
return model
def read(self, pb_path: str) -> Model:
"""Read TF file and load model.
Parameters
----------
pb_path : str
Path to TF file
Returns
-------
model : Model
Loaded model
"""
model = Model()
# load tensorflow model
graph_def = graph_pb2.GraphDef()
try:
f = open(path.abspath(pb_path), "rb")
graph_def.ParseFromString(f.read())
f.close()
except IOError:
print("Could not open file. Creating a new one.")
# import graph
model.graph = Importer.make_graph(graph_def)
return model
def read(self, pb_path: str, json_path: Optional[str] = None) -> Model:
"""Read ONNX file and load model.
Parameters
----------
pb_path : str
Path to ONNX file
Returns
-------
model : Model
Loaded model
"""
model = Model()
# load onnx model
onnx_model = onnx.load(path.abspath(pb_path))
# debug print in JSON
if json_path:
from pip._internal import main
main(['install', 'protobuf'])
from google.protobuf.json_format import MessageToJson, Parse
js_str = MessageToJson(onnx_model)
js_obj = json.loads(js_str)
with open(json_path, 'w') as fw:
json.dump(js_obj, fw, indent=4)
# ckeck if it's a valid model
# onnx.checker.check_model(onnx_model)
# import graph
model.graph = Importer.make_graph(onnx_model)
return model
