export_model.py 2.6 KB
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# Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
#
# 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.

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import os
import sys

__dir__ = os.path.dirname(os.path.abspath(__file__))
sys.path.append(__dir__)
sys.path.append(os.path.abspath(os.path.join(__dir__, '..')))

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import argparse

import paddle
from paddle.jit import to_static

from ppocr.modeling.architectures import build_model
from ppocr.postprocess import build_post_process
from ppocr.utils.save_load import init_model
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from ppocr.utils.logging import get_logger
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from tools.program import load_config, merge_config, ArgsParser
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def main():
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    FLAGS = ArgsParser().parse_args()
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    config = load_config(FLAGS.config)
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    merge_config(FLAGS.opt)
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    logger = get_logger()
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    # build post process
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    post_process_class = build_post_process(config['PostProcess'],
                                            config['Global'])

    # build model
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    # for rec algorithm
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    if hasattr(post_process_class, 'character'):
        char_num = len(getattr(post_process_class, 'character'))
        config['Architecture']["Head"]['out_channels'] = char_num
    model = build_model(config['Architecture'])
    init_model(config, model, logger)
    model.eval()

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    save_path = '{}/inference'.format(config['Global']['save_inference_dir'])
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    infer_shape = [3, -1, -1]
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    if config['Architecture']['model_type'] == "rec":
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        infer_shape = [3, 32, -1]  # for rec model, H must be 32
        if 'Transform' in config['Architecture'] and config['Architecture'][
                'Transform'] is not None and config['Architecture'][
                    'Transform']['name'] == 'TPS':
            logger.info(
                'When there is tps in the network, variable length input is not supported, and the input size needs to be the same as during training'
            )
            infer_shape[-1] = 100
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    model = to_static(
        model,
        input_spec=[
            paddle.static.InputSpec(
                shape=[None] + infer_shape, dtype='float32')
        ])
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    paddle.jit.save(model, save_path)
    logger.info('inference model is saved to {}'.format(save_path))
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if __name__ == "__main__":
    main()