60 lines
2.1 KiB
Python
60 lines
2.1 KiB
Python
"""
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Copyright (C) 2017-2020 Intel Corporation
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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"""
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from mo.front.common.replacement import FrontReplacementSubgraph
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from mo.front.mxnet.extractors.utils import get_json_layer_attrs
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from mo.graph.graph import Graph
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class SsdPatternRemoveReshape(FrontReplacementSubgraph):
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enabled = True
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def pattern(self):
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return dict(
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nodes=[
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('multi_box_prior', dict(op='_contrib_MultiBoxPrior')),
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('concat', dict(op='Concat')),
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('reshape', dict(op='Reshape'))
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],
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edges=[
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('multi_box_prior', 'concat', {'in': 0}),
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('concat', 'reshape', {'in': 0})
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]
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)
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def replace_sub_graph(self, graph: Graph, match: dict):
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"""
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Need to find each occurrence of pattern: _contrib_MultiBoxPrior(s) -> Concat -> Reshape
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remove Reshape layer - IE does not expect outputs from concatenation of _contrib_MultiBoxPrior to be reshaped
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Parameters
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----------
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graph : Graph
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Graph with loaded model.
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match : dict
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Patterns which were found in graph structure.
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"""
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reshape_node = match['reshape']
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reshape_node.out_port(0).get_connection().set_source(reshape_node.in_port(0).get_connection().get_source())
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graph.remove_node(reshape_node.id)
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# concat should be performed for the third axis
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concat_node = match['concat']
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attr = get_json_layer_attrs(concat_node.graph.node[concat_node.id]['symbol_dict'])
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if 'dim' in attr:
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attr['dim'] = 2
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concat_node['axis'] = 2
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