openvino/model-optimizer/extensions/front/mxnet/ssd_pattern_remove_flatten.py

53 lines
1.7 KiB
Python

"""
Copyright (C) 2017-2020 Intel Corporation
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
"""
from extensions.front.flatten_to_reshape import FlattenToReshape
from extensions.front.mxnet.ssd_pattern_remove_reshape import SsdPatternRemoveReshape
from mo.front.common.replacement import FrontReplacementSubgraph
from mo.graph.graph import Graph
class SsdPatternRemoveFlatten(FrontReplacementSubgraph):
enabled = True
def run_before(self):
return [SsdPatternRemoveReshape, FlattenToReshape]
def pattern(self):
return dict(
nodes=[
('multi_box_prior', dict(op='_contrib_MultiBoxPrior')),
('flatten', dict(op='Flatten'))
],
edges=[
('multi_box_prior', 'flatten', {'in': 0})
]
)
def replace_sub_graph(self, graph: Graph, match: dict):
"""
Need to find each occurrence of pattern: _contrib_MultiBoxPrior -> Flatten
remove Flatten layer - IE does not expect outputs to be flattened
Parameters
----------
graph : Graph
Graph with loaded model.
match : dict
Patterns which were found in graph structure.
"""
graph.erase_node(match['flatten'])