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			114 lines
		
	
	
		
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			Markdown
		
	
	
	
	
	
			
		
		
	
	
			114 lines
		
	
	
		
			3.6 KiB
		
	
	
	
		
			Markdown
		
	
	
	
	
	
| # SRN
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| 
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| - [1. 算法简介](#1)
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| - [2. 环境配置](#2)
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| - [3. 模型训练、评估、预测](#3)
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|     - [3.1 训练](#3-1)
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|     - [3.2 评估](#3-2)
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|     - [3.3 预测](#3-3)
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| - [4. 推理部署](#4)
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|     - [4.1 Python推理](#4-1)
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|     - [4.2 C++推理](#4-2)
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|     - [4.3 Serving服务化部署](#4-3)
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|     - [4.4 更多推理部署](#4-4)
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| - [5. FAQ](#5)
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| 
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| <a name="1"></a>
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| ## 1. 算法简介
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| 
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| 论文信息:
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| > [Towards Accurate Scene Text Recognition with Semantic Reasoning Networks](https://arxiv.org/abs/2003.12294#)
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| > Deli Yu, Xuan Li, Chengquan Zhang, Junyu Han, Jingtuo Liu, Errui Ding
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| > CVPR,2020
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| 
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| 使用MJSynth和SynthText两个文字识别数据集训练,在IIIT, SVT, IC03, IC13, IC15, SVTP, CUTE数据集上进行评估,算法复现效果如下:
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| 
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| |模型|骨干网络|配置文件|Acc|下载链接|
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| | --- | --- | --- | --- | --- |
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| |SRN|Resnet50_vd_fpn|[rec_r50_fpn_srn.yml](../../configs/rec/rec_r50_fpn_srn.yml)|86.31%|[训练模型](https://paddleocr.bj.bcebos.com/dygraph_v2.0/en/rec_r50_vd_srn_train.tar)|
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| 
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| 
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| <a name="2"></a>
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| ## 2. 环境配置
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| 请先参考[《运行环境准备》](./environment.md)配置PaddleOCR运行环境,参考[《项目克隆》](./clone.md)克隆项目代码。
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| 
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| 
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| <a name="3"></a>
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| ## 3. 模型训练、评估、预测
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| 
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| 请参考[文本识别教程](./recognition.md)。PaddleOCR对代码进行了模块化,训练不同的识别模型只需要**更换配置文件**即可。
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| 
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| 训练
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| 
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| 具体地,在完成数据准备后,便可以启动训练,训练命令如下:
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| 
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| ```
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| #单卡训练(训练周期长,不建议)
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| python3 tools/train.py -c configs/rec/rec_r50_fpn_srn.yml
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| 
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| #多卡训练,通过--gpus参数指定卡号
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| python3 -m paddle.distributed.launch --gpus '0,1,2,3'  tools/train.py -c configs/rec/rec_r50_fpn_srn.yml
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| ```
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| 
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| 评估
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| 
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| ```
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| # GPU 评估, Global.pretrained_model 为待测权重
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| python3 -m paddle.distributed.launch --gpus '0' tools/eval.py -c configs/rec/rec_r50_fpn_srn.yml -o Global.pretrained_model={path/to/weights}/best_accuracy
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| ```
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| 
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| 预测:
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| 
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| ```
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| # 预测使用的配置文件必须与训练一致
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| python3 tools/infer_rec.py -c configs/rec/rec_r50_fpn_srn.yml -o Global.pretrained_model={path/to/weights}/best_accuracy Global.infer_img=doc/imgs_words/en/word_1.png
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| ```
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| 
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| <a name="4"></a>
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| ## 4. 推理部署
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| 
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| <a name="4-1"></a>
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| ### 4.1 Python推理
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| 首先将SRN文本识别训练过程中保存的模型,转换成inference model。( [模型下载地址](https://paddleocr.bj.bcebos.com/dygraph_v2.0/en/rec_r50_vd_srn_train.tar) ),可以使用如下命令进行转换:
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| 
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| ```
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| python3 tools/export_model.py -c configs/rec/rec_r50_fpn_srn.yml -o Global.pretrained_model=./rec_r50_vd_srn_train/best_accuracy  Global.save_inference_dir=./inference/rec_srn
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| ```
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| 
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| SRN文本识别模型推理,可以执行如下命令:
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| 
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| ```
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| python3 tools/infer/predict_rec.py --image_dir="./doc/imgs_words/en/word_1.png" --rec_model_dir="./inference/rec_srn/" --rec_image_shape="1,64,256"  --rec_algorithm="SRN" --rec_char_dict_path=./ppocr/utils/ic15_dict.txt  --use_space_char=False
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| ```
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| 
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| <a name="4-2"></a>
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| ### 4.2 C++推理
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| 
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| 由于C++预处理后处理还未支持SRN,所以暂未支持
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| 
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| <a name="4-3"></a>
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| ### 4.3 Serving服务化部署
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| 
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| 暂不支持
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| 
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| <a name="4-4"></a>
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| ### 4.4 更多推理部署
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| 
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| 暂不支持
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| 
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| <a name="5"></a>
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| ## 5. FAQ
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| 
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| 
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| ## 引用
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| 
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| ```bibtex
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| @article{Yu2020TowardsAS,
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|   title={Towards Accurate Scene Text Recognition With Semantic Reasoning Networks},
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|   author={Deli Yu and Xuan Li and Chengquan Zhang and Junyu Han and Jingtuo Liu and Errui Ding},
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|   journal={2020 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)},
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|   year={2020},
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|   pages={12110-12119}
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| }
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| ```
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