2 Copyright (c) 2018-2019 Intel Corporation
4 Licensed under the Apache License, Version 2.0 (the "License");
5 you may not use this file except in compliance with the License.
6 You may obtain a copy of the License at
8 http://www.apache.org/licenses/LICENSE-2.0
10 Unless required by applicable law or agreed to in writing, software
11 distributed under the License is distributed on an "AS IS" BASIS,
12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 See the License for the specific language governing permissions and
14 limitations under the License.
19 from mo.front.mxnet.extractors.utils import get_mxnet_layer_attrs
20 from mo.front.extractor import FrontExtractorOp
21 from mo.ops.op import Op
24 class ProposalFrontExtractor(FrontExtractorOp):
25 op = '_contrib_Proposal'
30 attrs = get_mxnet_layer_attrs(node.symbol_dict)
31 pre_nms_topn = attrs.int('rpn_pre_nms_top_n', 6000)
32 post_nms_topn = attrs.int('rpn_post_nms_top_n', 300)
33 nms_thresh = attrs.float('threshold', 0.7)
34 min_size = attrs.int('rpn_min_size', 16)
35 scale = attrs.tuple("scales", float, (4, 8, 16, 32))
36 ratio = attrs.tuple("ratios", float, (0.5, 1, 2))
37 feat_stride = attrs.int('feature_stride', 16)
40 'feat_stride': feat_stride,
41 'ratio': np.array(ratio),
43 'scale': np.array(scale),
44 'pre_nms_topn': pre_nms_topn,
45 'post_nms_topn': post_nms_topn,
46 'nms_thresh': nms_thresh,
47 'base_size': feat_stride
50 # update the attributes of the node
51 Op.get_op_class_by_name('Proposal').update_node_stat(node, update_attrs)
52 return __class__.enabled