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https://github.com/PaddlePaddle/PaddleOCR.git
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79 lines
2.8 KiB
Python
79 lines
2.8 KiB
Python
# Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
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#
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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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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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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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from __future__ import absolute_import
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from __future__ import division
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from __future__ import print_function
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from paddle import nn
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from ppocr.modeling.transforms import build_transform
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from ppocr.modeling.backbones import build_backbone
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from ppocr.modeling.necks import build_neck
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from ppocr.modeling.heads import build_head
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__all__ = ['BaseModel']
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class BaseModel(nn.Layer):
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def __init__(self, config):
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"""
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the module for OCR.
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args:
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config (dict): the super parameters for module.
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"""
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super(BaseModel, self).__init__()
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in_channels = config.get('in_channels', 3)
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model_type = config['model_type']
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# build transfrom,
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# for rec, transfrom can be TPS,None
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# for det and cls, transfrom shoule to be None,
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# if you make model differently, you can use transfrom in det and cls
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if 'Transform' not in config or config['Transform'] is None:
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self.use_transform = False
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else:
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self.use_transform = True
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config['Transform']['in_channels'] = in_channels
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self.transform = build_transform(config['Transform'])
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in_channels = self.transform.out_channels
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# build backbone, backbone is need for del, rec and cls
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config["Backbone"]['in_channels'] = in_channels
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self.backbone = build_backbone(config["Backbone"], model_type)
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in_channels = self.backbone.out_channels
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# build neck
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# for rec, neck can be cnn,rnn or reshape(None)
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# for det, neck can be FPN, BIFPN and so on.
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# for cls, neck should be none
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if 'Neck' not in config or config['Neck'] is None:
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self.use_neck = False
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else:
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self.use_neck = True
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config['Neck']['in_channels'] = in_channels
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self.neck = build_neck(config['Neck'])
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in_channels = self.neck.out_channels
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# # build head, head is need for det, rec and cls
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config["Head"]['in_channels'] = in_channels
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self.head = build_head(config["Head"])
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def forward(self, x):
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if self.use_transform:
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x = self.transform(x)
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x = self.backbone(x)
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if self.use_neck:
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x = self.neck(x)
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x = self.head(x)
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return x
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