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## 简介 ## Introduction
PaddleOCR旨在打造一套丰富、领先、且实用的OCR工具库，助力使用者训练出更好的模型，并应用落地。 PaddleOCR aims to create a rich, leading, and practical OCR tools that help users train better models and apply them into practice.
**近期更新** **Recent updates**
- 2020.6.8 添加[数据集](./doc/datasets.md)，并保持持续更新 - 2020.6.8 Add [dataset](./doc/datasets.md) and keep updating
- 2020.6.5 支持 `attetnion` 模型导出 `inference_model` - 2020.6.5 Support exporting `attention` model to `inference_model`
- 2020.6.5 支持单独预测识别时，输出结果得分 - 2020.6.5 Support separate prediction and recognition, output result score
- 2020.5.30 提供超轻量级中文OCR在线体验 - 2020.5.30 Provide ultra-lightweight Chinese OCR online experience
- 2020.5.30 模型预测、训练支持Windows系统 - 2020.5.30 Model prediction and training supported on Windows system
- [more](./doc/update.md) - [more](./doc/update.md)
## 特性 ## Features
- 超轻量级中文OCR，总模型仅8.6M - Ultra-lightweight Chinese OCR model, total model size is only 8.6M
- 单模型支持中英文数字组合识别、竖排文本识别、长文本识别 - Single model supports Chinese and English numbers combination recognition, vertical text recognition, long text recognition
- 检测模型DB（4.1M）+识别模型CRNN（4.5M） - Detection model DB (4.1M) + recognition model CRNN (4.5M)
- 多种文本检测训练算法，EAST、DB - Various text detection algorithms: EAST, DB
- 多种文本识别训练算法，Rosetta、CRNN、STAR-Net、RARE - Various text recognition algorithms: Rosetta, CRNN, STAR-Net, RARE
### 支持的中文模型列表: ### Supported Chinese models list:
|模型名称|模型简介|检测模型地址|识别模型地址| |Model Name|Description |Detection Model link|Recognition Model link|
|-|-|-|-| |-|-|-|-|
|chinese_db_crnn_mobile|超轻量级中文OCR模型|[inference模型](https://paddleocr.bj.bcebos.com/ch_models/ch_det_mv3_db_infer.tar) & [预训练模型](https://paddleocr.bj.bcebos.com/ch_models/ch_det_mv3_db.tar)|[inference模型](https://paddleocr.bj.bcebos.com/ch_models/ch_rec_mv3_crnn_infer.tar) & [预训练模型](https://paddleocr.bj.bcebos.com/ch_models/ch_rec_mv3_crnn.tar)| |chinese_db_crnn_mobile|Ultra-lightweight Chinese OCR model|[inference model](https://paddleocr.bj.bcebos.com/ch_models/ch_det_mv3_db_infer.tar) & [pre-trained model](https://paddleocr.bj.bcebos.com/ch_models/ch_det_mv3_db.tar)|[inference model](https://paddleocr.bj.bcebos.com/ch_models/ch_rec_mv3_crnn_infer.tar) & [pre-trained model](https://paddleocr.bj.bcebos.com/ch_models/ch_rec_mv3_crnn.tar)|
|chinese_db_crnn_server|通用中文OCR模型|[inference模型](https://paddleocr.bj.bcebos.com/ch_models/ch_det_r50_vd_db_infer.tar) & [预训练模型](https://paddleocr.bj.bcebos.com/ch_models/ch_det_r50_vd_db.tar)|[inference模型](https://paddleocr.bj.bcebos.com/ch_models/ch_rec_r34_vd_crnn_infer.tar) & [预训练模型](https://paddleocr.bj.bcebos.com/ch_models/ch_rec_r34_vd_crnn.tar)| |chinese_db_crnn_server|General Chinese OCR model|[inference model](https://paddleocr.bj.bcebos.com/ch_models/ch_det_r50_vd_db_infer.tar) & [pre-trained model](https://paddleocr.bj.bcebos.com/ch_models/ch_det_r50_vd_db.tar)|[inference model](https://paddleocr.bj.bcebos.com/ch_models/ch_rec_r34_vd_crnn_infer.tar) & [pre-trained model](https://paddleocr.bj.bcebos.com/ch_models/ch_rec_r34_vd_crnn.tar)|
超轻量级中文OCR在线体验地址：https://www.paddlepaddle.org.cn/hub/scene/ocr
**也可以按如下教程快速体验超轻量级中文OCR和通用中文OCR模型。** For testing our Chinese OCR online：https://www.paddlepaddle.org.cn/hub/scene/ocr
## **超轻量级中文OCR以及通用中文OCR体验** **You can also quickly experience the Ultra-lightweight Chinese OCR and General Chinese OCR models as follows:**
## **Ultra-lightweight Chinese OCR and General Chinese OCR inference**
![](doc/imgs_results/11.jpg) ![](doc/imgs_results/11.jpg)
上图是超轻量级中文OCR模型效果展示，更多效果图请见文末[超轻量级中文OCR效果展示](#超轻量级中文OCR效果展示)和[通用中文OCR效果展示](#通用中文OCR效果展示)。 The picture above is the result of our Ultra-lightweight Chinese OCR model. For more testing results, please see the end of the article [Ultra-lightweight Chinese OCR results](#Ultra-lightweight-Chinese-OCR-results) and [General Chinese OCR results](#General-Chinese-OCR-results).
#### 1.环境配置 #### 1. Environment configuration
请先参考[快速安装](./doc/installation.md)配置PaddleOCR运行环境。 Please see [Quick installation](./doc/installation.md)
#### 2.inference模型下载 #### 2. Download inference models
*windows 环境下如果没有安装wget,下载模型时可将链接复制到浏览器中下载，并解压放置在相应目录下* #### (1) Download Ultra-lightweight Chinese OCR models
*If wget is not installed in the windows system, you can copy the link to the browser to download the model. After model downloaded, unzip it and place it in the corresponding directory*
#### (1)超轻量级中文OCR模型下载
``` ```
mkdir inference && cd inference mkdir inference && cd inference
# 下载超轻量级中文OCR模型的检测模型并解压 # Download the detection part of the Ultra-lightweight Chinese OCR and decompress it
wget https://paddleocr.bj.bcebos.com/ch_models/ch_det_mv3_db_infer.tar && tar xf ch_det_mv3_db_infer.tar wget https://paddleocr.bj.bcebos.com/ch_models/ch_det_mv3_db_infer.tar && tar xf ch_det_mv3_db_infer.tar
# 下载超轻量级中文OCR模型的识别模型并解压 # Download the recognition part of the Ultra-lightweight Chinese OCR and decompress it
wget https://paddleocr.bj.bcebos.com/ch_models/ch_rec_mv3_crnn_infer.tar && tar xf ch_rec_mv3_crnn_infer.tar wget https://paddleocr.bj.bcebos.com/ch_models/ch_rec_mv3_crnn_infer.tar && tar xf ch_rec_mv3_crnn_infer.tar
cd .. cd ..
``` ```
#### (2)通用中文OCR模型下载 #### (2) Download General Chinese OCR models
``` ```
mkdir inference && cd inference mkdir inference && cd inference
# 下载通用中文OCR模型的检测模型并解压 # Download the detection part of the general Chinese OCR model and decompress it
wget https://paddleocr.bj.bcebos.com/ch_models/ch_det_r50_vd_db_infer.tar && tar xf ch_det_r50_vd_db_infer.tar wget https://paddleocr.bj.bcebos.com/ch_models/ch_det_r50_vd_db_infer.tar && tar xf ch_det_r50_vd_db_infer.tar
# 下载通用中文OCR模型的识别模型并解压 # Download the recognition part of the generic Chinese OCR model and decompress it
wget https://paddleocr.bj.bcebos.com/ch_models/ch_rec_r34_vd_crnn_infer.tar && tar xf ch_rec_r34_vd_crnn_infer.tar wget https://paddleocr.bj.bcebos.com/ch_models/ch_rec_r34_vd_crnn_infer.tar && tar xf ch_rec_r34_vd_crnn_infer.tar
cd .. cd ..
``` ```
#### 3.单张图像或者图像集合预测 #### 3. Single image and batch image prediction
以下代码实现了文本检测、识别串联推理，在执行预测时，需要通过参数image_dir指定单张图像或者图像集合的路径、参数det_model_dir指定检测inference模型的路径和参数rec_model_dir指定识别inference模型的路径。可视化识别结果默认保存到 ./inference_results 文件夹里面。 The following code implements text detection and recognition inference tandemly. When performing prediction, you need to specify the path of a single image or image folder through the parameter `image_dir`, the parameter `det_model_dir` specifies the path to detection model, and the parameter `rec_model_dir` specifies the path to the recognition model. The visual prediction results are saved to the `./inference_results` folder by default.
``` ```
# 设置PYTHONPATH环境变量 # Set PYTHONPATH environment variable
export PYTHONPATH=. export PYTHONPATH=.
# windows下设置环境变量 # Setting environment variable in Windows
SET PYTHONPATH=. SET PYTHONPATH=.
# 预测image_dir指定的单张图像 # Prediction on a single image by specifying image path to image_dir
python3 tools/infer/predict_system.py --image_dir="./doc/imgs/11.jpg" --det_model_dir="./inference/ch_det_mv3_db/" --rec_model_dir="./inference/ch_rec_mv3_crnn/" python3 tools/infer/predict_system.py --image_dir="./doc/imgs/11.jpg" --det_model_dir="./inference/ch_det_mv3_db/" --rec_model_dir="./inference/ch_rec_mv3_crnn/"
# 预测image_dir指定的图像集合 # Prediction on a batch of images by specifying image folder path to image_dir
python3 tools/infer/predict_system.py --image_dir="./doc/imgs/" --det_model_dir="./inference/ch_det_mv3_db/" --rec_model_dir="./inference/ch_rec_mv3_crnn/" python3 tools/infer/predict_system.py --image_dir="./doc/imgs/" --det_model_dir="./inference/ch_det_mv3_db/" --rec_model_dir="./inference/ch_rec_mv3_crnn/"
# 如果想使用CPU进行预测，需设置use_gpu参数为False # If you want to use CPU for prediction, you need to set the use_gpu parameter to False
python3 tools/infer/predict_system.py --image_dir="./doc/imgs/11.jpg" --det_model_dir="./inference/ch_det_mv3_db/" --rec_model_dir="./inference/ch_rec_mv3_crnn/" --use_gpu=False python3 tools/infer/predict_system.py --image_dir="./doc/imgs/11.jpg" --det_model_dir="./inference/ch_det_mv3_db/" --rec_model_dir="./inference/ch_rec_mv3_crnn/" --use_gpu=False
``` ```
通用中文OCR模型的体验可以按照上述步骤下载相应的模型，并且更新相关的参数，示例如下： To run inference of the Generic Chinese OCR model, follow these steps above to download the corresponding models and update the relevant parameters. Examples are as follows:
``` ```
# 预测image_dir指定的单张图像 # Prediction on a single image by specifying image path to image_dir
python3 tools/infer/predict_system.py --image_dir="./doc/imgs/11.jpg" --det_model_dir="./inference/ch_det_r50_vd_db/" --rec_model_dir="./inference/ch_rec_r34_vd_crnn/" python3 tools/infer/predict_system.py --image_dir="./doc/imgs/11.jpg" --det_model_dir="./inference/ch_det_r50_vd_db/" --rec_model_dir="./inference/ch_rec_r34_vd_crnn/"
``` ```
更多的文本检测、识别串联推理使用方式请参考文档教程中[基于预测引擎推理](./doc/inference.md)。 For more text detection and recognition models, please refer to the document [Inference](./doc/inference.md)
## 文档教程 ## Documentation
- [快速安装](./doc/installation.md) - [Quick installation](./doc/installation.md)
- [文本检测模型训练/评估/预测](./doc/detection.md) - [Text detection model training/evaluation/prediction](./doc/detection.md)
- [文本识别模型训练/评估/预测](./doc/recognition.md) - [Text recognition model training/evaluation/prediction](./doc/recognition.md)
- [基于预测引擎推理](./doc/inference.md) - [Inference](./doc/inference.md)
- [数据集](./doc/datasets.md) - [Dataset](./doc/datasets.md)
## 文本检测算法 ## Text detection algorithm
PaddleOCR开源的文本检测算法列表： PaddleOCR open source text detection algorithms list:
- [x] EAST([paper](https://arxiv.org/abs/1704.03155)) - [x] EAST([paper](https://arxiv.org/abs/1704.03155))
- [x] DB([paper](https://arxiv.org/abs/1911.08947)) - [x] DB([paper](https://arxiv.org/abs/1911.08947))
- [ ] SAST([paper](https://arxiv.org/abs/1908.05498))(百度自研, comming soon) - [ ] SAST([paper](https://arxiv.org/abs/1908.05498))(Baidu Self-Research, comming soon)
在ICDAR2015文本检测公开数据集上，算法效果如下： On the ICDAR2015 dataset, the text detection result is as follows:
|模型|骨干网络|precision|recall|Hmean|下载链接| |Model|Backbone|precision|recall|Hmean|Download link|
|-|-|-|-|-|-| |-|-|-|-|-|-|
|EAST|ResNet50_vd|88.18%|85.51%|86.82%|[下载链接](https://paddleocr.bj.bcebos.com/det_r50_vd_east.tar)| |EAST|ResNet50_vd|88.18%|85.51%|86.82%|[Download link](https://paddleocr.bj.bcebos.com/det_r50_vd_east.tar)|
|EAST|MobileNetV3|81.67%|79.83%|80.74%|[下载链接](https://paddleocr.bj.bcebos.com/det_mv3_east.tar)| |EAST|MobileNetV3|81.67%|79.83%|80.74%|[Download link](https://paddleocr.bj.bcebos.com/det_mv3_east.tar)|
|DB|ResNet50_vd|83.79%|80.65%|82.19%|[下载链接](https://paddleocr.bj.bcebos.com/det_r50_vd_db.tar)| |DB|ResNet50_vd|83.79%|80.65%|82.19%|[Download link](https://paddleocr.bj.bcebos.com/det_r50_vd_db.tar)|
|DB|MobileNetV3|75.92%|73.18%|74.53%|[下载链接](https://paddleocr.bj.bcebos.com/det_mv3_db.tar)| |DB|MobileNetV3|75.92%|73.18%|74.53%|[Download link](https://paddleocr.bj.bcebos.com/det_mv3_db.tar)|
使用[LSVT](https://github.com/PaddlePaddle/PaddleOCR/blob/develop/doc/datasets.md#1icdar2019-lsvt)街景数据集共3w张数据，训练中文检测模型的相关配置和预训练文件如下： For use of [LSVT](https://github.com/PaddlePaddle/PaddleOCR/blob/develop/doc/datasets.md#1icdar2019-lsvt) street view dataset with a total of 3w training data，the related configuration and pre-trained models for Chinese detection task are as follows:
|模型|骨干网络|配置文件|预训练模型| |Model|Backbone|Configuration file|Pre-trained model|
|-|-|-|-| |-|-|-|-|
|超轻量中文模型|MobileNetV3|det_mv3_db.yml|[下载链接](https://paddleocr.bj.bcebos.com/ch_models/ch_det_mv3_db.tar)| |Ultra-lightweight Chinese model|MobileNetV3|det_mv3_db.yml|[Download link](https://paddleocr.bj.bcebos.com/ch_models/ch_det_mv3_db.tar)|
|通用中文OCR模型|ResNet50_vd|det_r50_vd_db.yml|[下载链接](https://paddleocr.bj.bcebos.com/ch_models/ch_det_r50_vd_db.tar)| |General Chinese OCR model|ResNet50_vd|det_r50_vd_db.yml|[Download link](https://paddleocr.bj.bcebos.com/ch_models/ch_det_r50_vd_db.tar)|
* 注： 上述DB模型的训练和评估，需设置后处理参数box_thresh=0.6，unclip_ratio=1.5，使用不同数据集、不同模型训练，可调整这两个参数进行优化 * Note: For the training and evaluation of the above DB model, post-processing parameters box_thresh=0.6 and unclip_ratio=1.5 need to be set. If using different datasets and different models for training, these two parameters can be adjusted for better result.
PaddleOCR文本检测算法的训练和使用请参考文档教程中[文本检测模型训练/评估/预测](./doc/detection.md)。 For the training guide and use of PaddleOCR text detection algorithms, please refer to the document [Text detection model training/evaluation/prediction](./doc/detection.md)
## 文本识别算法 ## Text recognition algorithm
PaddleOCR开源的文本识别算法列表： PaddleOCR open-source text recognition algorithms list:
- [x] CRNN([paper](https://arxiv.org/abs/1507.05717)) - [x] CRNN([paper](https://arxiv.org/abs/1507.05717))
- [x] Rosetta([paper](https://arxiv.org/abs/1910.05085)) - [x] Rosetta([paper](https://arxiv.org/abs/1910.05085))
- [x] STAR-Net([paper](http://www.bmva.org/bmvc/2016/papers/paper043/index.html)) - [x] STAR-Net([paper](http://www.bmva.org/bmvc/2016/papers/paper043/index.html))
- [x] RARE([paper](https://arxiv.org/abs/1603.03915v1)) - [x] RARE([paper](https://arxiv.org/abs/1603.03915v1))
- [ ] SRN([paper](https://arxiv.org/abs/2003.12294))(百度自研, comming soon) - [ ] SRN([paper](https://arxiv.org/abs/2003.12294))(Baidu Self-Research, comming soon)
参考[DTRB](https://arxiv.org/abs/1904.01906)文字识别训练和评估流程，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，算法效果如下： Refer to [DTRB](https://arxiv.org/abs/1904.01906), the training and evaluation result of these above text recognition (using MJSynth and SynthText for training, evaluate on IIIT, SVT, IC03, IC13, IC15, SVTP, CUTE) is as follow:
|模型|骨干网络|Avg Accuracy|模型存储命名|下载链接| |Model|Backbone|Avg Accuracy|Module combination|Download link|
|-|-|-|-|-| |-|-|-|-|-|
|Rosetta|Resnet34_vd|80.24%|rec_r34_vd_none_none_ctc|[下载链接](https://paddleocr.bj.bcebos.com/rec_r34_vd_none_none_ctc.tar)| |Rosetta|Resnet34_vd|80.24%|rec_r34_vd_none_none_ctc|[Download link](https://paddleocr.bj.bcebos.com/rec_r34_vd_none_none_ctc.tar)|
|Rosetta|MobileNetV3|78.16%|rec_mv3_none_none_ctc|[下载链接](https://paddleocr.bj.bcebos.com/rec_mv3_none_none_ctc.tar)| |Rosetta|MobileNetV3|78.16%|rec_mv3_none_none_ctc|[Download link](https://paddleocr.bj.bcebos.com/rec_mv3_none_none_ctc.tar)|
|CRNN|Resnet34_vd|82.20%|rec_r34_vd_none_bilstm_ctc|[下载链接](https://paddleocr.bj.bcebos.com/rec_r34_vd_none_bilstm_ctc.tar)| |CRNN|Resnet34_vd|82.20%|rec_r34_vd_none_bilstm_ctc|[Download link](https://paddleocr.bj.bcebos.com/rec_r34_vd_none_bilstm_ctc.tar)|
|CRNN|MobileNetV3|79.37%|rec_mv3_none_bilstm_ctc|[下载链接](https://paddleocr.bj.bcebos.com/rec_mv3_none_bilstm_ctc.tar)| |CRNN|MobileNetV3|79.37%|rec_mv3_none_bilstm_ctc|[Download link](https://paddleocr.bj.bcebos.com/rec_mv3_none_bilstm_ctc.tar)|
|STAR-Net|Resnet34_vd|83.93%|rec_r34_vd_tps_bilstm_ctc|[下载链接](https://paddleocr.bj.bcebos.com/rec_r34_vd_tps_bilstm_ctc.tar)| |STAR-Net|Resnet34_vd|83.93%|rec_r34_vd_tps_bilstm_ctc|[Download link](https://paddleocr.bj.bcebos.com/rec_r34_vd_tps_bilstm_ctc.tar)|
|STAR-Net|MobileNetV3|81.56%|rec_mv3_tps_bilstm_ctc|[下载链接](https://paddleocr.bj.bcebos.com/rec_mv3_tps_bilstm_ctc.tar)| |STAR-Net|MobileNetV3|81.56%|rec_mv3_tps_bilstm_ctc|[Download link](https://paddleocr.bj.bcebos.com/rec_mv3_tps_bilstm_ctc.tar)|
|RARE|Resnet34_vd|84.90%|rec_r34_vd_tps_bilstm_attn|[下载链接](https://paddleocr.bj.bcebos.com/rec_r34_vd_tps_bilstm_attn.tar)| |RARE|Resnet34_vd|84.90%|rec_r34_vd_tps_bilstm_attn|[Download link](https://paddleocr.bj.bcebos.com/rec_r34_vd_tps_bilstm_attn.tar)|
|RARE|MobileNetV3|83.32%|rec_mv3_tps_bilstm_attn|[下载链接](https://paddleocr.bj.bcebos.com/rec_mv3_tps_bilstm_attn.tar)| |RARE|MobileNetV3|83.32%|rec_mv3_tps_bilstm_attn|[Download link](https://paddleocr.bj.bcebos.com/rec_mv3_tps_bilstm_attn.tar)|
使用[LSVT](https://github.com/PaddlePaddle/PaddleOCR/blob/develop/doc/datasets.md#1icdar2019-lsvt)街景数据集根据真值将图crop出来30w数据，进行位置校准。此外基于LSVT语料生成500w合成数据训练中文模型，相关配置和预训练文件如下： We use [LSVT](https://github.com/PaddlePaddle/PaddleOCR/blob/develop/doc/datasets.md#1icdar2019-lsvt) dataset and cropout 30w traning data from original photos by using position groundtruth and make some calibration needed. In addition, based on the LSVT corpus, 500w synthetic data is generated to train the Chinese model. The related configuration and pre-trained models are as follows:
|模型|骨干网络|配置文件|预训练模型| |Model|Backbone|Configuration file|Pre-trained model|
|-|-|-|-| |-|-|-|-|
|超轻量中文模型|MobileNetV3|rec_chinese_lite_train.yml|[下载链接](https://paddleocr.bj.bcebos.com/ch_models/ch_rec_mv3_crnn.tar)| |Ultra-lightweight Chinese model|MobileNetV3|rec_chinese_lite_train.yml|[Download link](https://paddleocr.bj.bcebos.com/ch_models/ch_rec_mv3_crnn.tar)|
|通用中文OCR模型|Resnet34_vd|rec_chinese_common_train.yml|[下载链接](https://paddleocr.bj.bcebos.com/ch_models/ch_rec_r34_vd_crnn.tar)| |General Chinese OCR model|Resnet34_vd|rec_chinese_common_train.yml|[Download link](https://paddleocr.bj.bcebos.com/ch_models/ch_rec_r34_vd_crnn.tar)|
PaddleOCR文本识别算法的训练和使用请参考文档教程中[文本识别模型训练/评估/预测](./doc/recognition.md)。 Please refer to the document for training guide and use of PaddleOCR text recognition algorithms [Text recognition model training/evaluation/prediction](./doc/recognition.md)
## 端到端OCR算法 ## End-to-end OCR algorithm
- [ ] [End2End-PSL](https://arxiv.org/abs/1909.07808)(百度自研, comming soon) - [ ] [End2End-PSL](https://arxiv.org/abs/1909.07808)(Baidu Self-Research, comming soon)
<a name="超轻量级中文OCR效果展示"></a> <a name="Ultra-lightweight Chinese OCR results"></a>
## 超轻量级中文OCR效果展示 ## Ultra-lightweight Chinese OCR results
![](doc/imgs_results/1.jpg) ![](doc/imgs_results/1.jpg)
![](doc/imgs_results/7.jpg) ![](doc/imgs_results/7.jpg)
![](doc/imgs_results/12.jpg) ![](doc/imgs_results/12.jpg)
@ -167,34 +167,40 @@ PaddleOCR文本识别算法的训练和使用请参考文档教程中[文本识
![](doc/imgs_results/16.png) ![](doc/imgs_results/16.png)
![](doc/imgs_results/22.jpg) ![](doc/imgs_results/22.jpg)
<a name="通用中文OCR效果展示"></a> <a name="General Chinese OCR results"></a>
## 通用中文OCR效果展示 ## General Chinese OCR results
![](doc/imgs_results/chinese_db_crnn_server/11.jpg) ![](doc/imgs_results/chinese_db_crnn_server/11.jpg)
![](doc/imgs_results/chinese_db_crnn_server/2.jpg) ![](doc/imgs_results/chinese_db_crnn_server/2.jpg)
![](doc/imgs_results/chinese_db_crnn_server/8.jpg) ![](doc/imgs_results/chinese_db_crnn_server/8.jpg)
## FAQ ## FAQ
1. **预测报错：got an unexpected keyword argument 'gradient_clip'** 1. Prediction error：got an unexpected keyword argument 'gradient_clip'
安装的paddle版本不对，目前本项目仅支持paddle1.7，近期会适配到1.8。
2. **转换attention识别模型时报错：KeyError: 'predict'** The installed paddle version is not correct. At present, this project only supports paddle1.7, which will be adapted to 1.8 in the near future.
基于Attention损失的识别模型推理还在调试中。对于中文文本识别，建议优先选择基于CTC损失的识别模型，实践中也发现基于Attention损失的效果不如基于CTC损失的识别模型。
3. **关于推理速度** 2. Error when using attention-based recognition model: KeyError: 'predict'
图片中的文字较多时，预测时间会增，可以使用--rec_batch_num设置更小预测batch num，默认值为30，可以改为10或其他数值。
4. **服务部署与移动端部署** The inference of recognition model based on attention loss is still being debugged. For Chinese text recognition, it is recommended to choose the recognition model based on CTC loss first. In practice, it is also found that the recognition model based on attention loss is not as effective as the one based on CTC loss.
预计6月中下旬会先后发布基于Serving的服务部署方案和基于Paddle Lite的移动端部署方案，欢迎持续关注。
5. **自研算法发布时间** 3. About inference speed
自研算法SAST、SRN、End2End-PSL都将在6-7月陆续发布，敬请期待。
When there are a lot of texts in the picture, the prediction time will increase. You can use `--rec_batch_num` to set a smaller prediction batch size. The default value is 30, which can be changed to 10 or other values.
4. Service deployment and mobile deployment
It is expected that the service deployment based on Serving and the mobile deployment based on Paddle Lite will be released successively in mid-to-late June. Stay tuned for more updates.
5. Release time of self-developed algorithm
Baidu Self-developed algorithms such as SAST, SRN and end2end PSL will be released in June or July. Please be patient.
[more](./doc/FAQ.md) [more](./doc/FAQ.md)
## 欢迎加入PaddleOCR技术交流群 ## Welcome to the PaddleOCR technical exchange group
加微信：paddlehelp，备注OCR，小助手拉你进群～ Add Wechat: paddlehelp, remark OCR, small assistant will pull you into the group ~
## 参考文献
## References
``` ```
1. EAST: 1. EAST:
@inproceedings{zhou2017east, @inproceedings{zhou2017east,
@ -249,8 +255,8 @@ PaddleOCR文本识别算法的训练和使用请参考文档教程中[文本识
} }
``` ```
## 许可证书 ## License
本项目的发布受<a href="https://github.com/PaddlePaddle/PaddleOCR/blob/master/LICENSE">Apache 2.0 license</a>许可认证。 This project is released under <a href="https://github.com/PaddlePaddle/PaddleOCR/blob/master/LICENSE">Apache 2.0 license</a>
## 如何贡献代码 ## Contribution
我们非常欢迎你为PaddleOCR贡献代码，也十分感谢你的反馈。 We welcome all the contributions to PaddleOCR and appreciate for your feedback very much.