OCR Model List（V2.1, updated on 2021.9.6）

Note

Compared with the model v2.0, the 2.1 version of the detection model has a improvement in accuracy, and the 2.1 version of the recognition model has optimizations in accuracy and speed with CPU.

Compared with models 1.1, which are trained with static graph programming paradigm, models 2.0 are the dynamic graph trained version and achieve close performance.

All models in this tutorial are all ppocr-series models, for more introduction of algorithms and models based on public dataset, you can refer to algorithm overview tutorial.

OCR Model List（V2.1, updated on 2021.9.6）

The downloadable models provided by PaddleOCR include inference model, trained model, pre-trained model and slim model. The differences between the models are as follows:

model type	model format	description
inference model	inference.pdmodel、inference.pdiparams	Used for inference based on Paddle inference engine，detail
trained model, pre-trained model	.pdparams、.pdopt、*.states	The checkpoints model saved in the training process, which stores the parameters of the model, mostly used for model evaluation and continuous training.
slim model	*.nb	Model compressed by PaddleSlim (a model compression tool using PaddlePaddle), which is suitable for mobile-side deployment scenarios (Paddle-Lite is needed for slim model deployment).

Relationship of the above models is as follows.

1. Text Detection Model

model name	description	config	model size	download
ch_PP-OCRv2_det_slim	[New] slim quantization with distillation lightweight model, supporting Chinese, English, multilingual text detection	ch_PP-OCRv2_det_cml.yml	3M	inference model
ch_PP-OCRv2_det	[New] Original lightweight model, supporting Chinese, English, multilingual text detection	ch_PP-OCRv2_det_cml.yml	3M	inference model / trained model
ch_ppocr_mobile_slim_v2.0_det	Slim pruned lightweight model, supporting Chinese, English, multilingual text detection	ch_det_mv3_db_v2.0.yml	2.6M	inference model
ch_ppocr_mobile_v2.0_det	Original lightweight model, supporting Chinese, English, multilingual text detection	ch_det_mv3_db_v2.0.yml	3M	inference model / trained model
ch_ppocr_server_v2.0_det	General model, which is larger than the lightweight model, but achieved better performance	ch_det_res18_db_v2.0.yml	47M	inference model / trained model

2. Text Recognition Model

2.1 Chinese Recognition Model

model name	description	config	model size	download
ch_PP-OCRv2_rec_slim	[New] Slim qunatization with distillation lightweight model, supporting Chinese, English, multilingual text recognition	ch_PP-OCRv2_rec.yml	9M	inference model / trained model
ch_PP-OCRv2_rec	[New] Original lightweight model, supporting Chinese, English, multilingual text recognition	ch_PP-OCRv2_rec_distillation.yml	8.5M	inference model / trained model
ch_ppocr_mobile_slim_v2.0_rec	Slim pruned and quantized lightweight model, supporting Chinese, English and number recognition	rec_chinese_lite_train_v2.0.yml	6M	inference model / trained model
ch_ppocr_mobile_v2.0_rec	Original lightweight model, supporting Chinese, English and number recognition	rec_chinese_lite_train_v2.0.yml	5.2M	inference model / trained model / pre-trained model
ch_ppocr_server_v2.0_rec	General model, supporting Chinese, English and number recognition	rec_chinese_common_train_v2.0.yml	94.8M	inference model / trained model / pre-trained model

Note: The trained model is fine-tuned on the pre-trained model with real data and synthesized vertical text data, which achieved better performance in real scene. The pre-trained model is directly trained on the full amount of real data and synthesized data, which is more suitable for fine-tune on your own dataset.

2.2 English Recognition Model

model name	description	config	model size	download
en_number_mobile_slim_v2.0_rec	Slim pruned and quantized lightweight model, supporting English and number recognition	rec_en_number_lite_train.yml	2.7M	inference model / trained model
en_number_mobile_v2.0_rec	Original lightweight model, supporting English and number recognition	rec_en_number_lite_train.yml	2.6M	inference model / trained model

2.3 Multilingual Recognition Model（Updating...）

model name	dict file	description	config	model size	download
french_mobile_v2.0_rec	ppocr/utils/dict/french_dict.txt	Lightweight model for French recognition	rec_french_lite_train.yml	2.65M	inference model / trained model
german_mobile_v2.0_rec	ppocr/utils/dict/german_dict.txt	Lightweight model for German recognition	rec_german_lite_train.yml	2.65M	inference model / trained model
korean_mobile_v2.0_rec	ppocr/utils/dict/korean_dict.txt	Lightweight model for Korean recognition	rec_korean_lite_train.yml	3.9M	inference model / trained model
japan_mobile_v2.0_rec	ppocr/utils/dict/japan_dict.txt	Lightweight model for Japanese recognition	rec_japan_lite_train.yml	4.23M	inference model / trained model
chinese_cht_mobile_v2.0_rec	ppocr/utils/dict/chinese_cht_dict.txt	Lightweight model for chinese cht recognition	rec_chinese_cht_lite_train.yml	5.63M	inference model / trained model
te_mobile_v2.0_rec	ppocr/utils/dict/te_dict.txt	Lightweight model for Telugu recognition	rec_te_lite_train.yml	2.63M	inference model / trained model
ka_mobile_v2.0_rec	ppocr/utils/dict/ka_dict.txt	Lightweight model for Kannada recognition	rec_ka_lite_train.yml	2.63M	inference model / trained model
ta_mobile_v2.0_rec	ppocr/utils/dict/ta_dict.txt	Lightweight model for Tamil recognition	rec_ta_lite_train.yml	2.63M	inference model / trained model
latin_mobile_v2.0_rec	ppocr/utils/dict/latin_dict.txt	Lightweight model for latin recognition	rec_latin_lite_train.yml	2.6M	inference model / trained model
arabic_mobile_v2.0_rec	ppocr/utils/dict/arabic_dict.txt	Lightweight model for arabic recognition	rec_arabic_lite_train.yml	2.6M	inference model / trained model
cyrillic_mobile_v2.0_rec	ppocr/utils/dict/cyrillic_dict.txt	Lightweight model for cyrillic recognition	rec_cyrillic_lite_train.yml	2.6M	inference model / trained model
devanagari_mobile_v2.0_rec	ppocr/utils/dict/devanagari_dict.txt	Lightweight model for devanagari recognition	rec_devanagari_lite_train.yml	2.6M	inference model / trained model

For more supported languages, please refer to : Multi-language model

3. Text Angle Classification Model

model name	description	config	model size	download
ch_ppocr_mobile_slim_v2.0_cls	Slim quantized model for text angle classification	cls_mv3.yml	2.1M	inference model / trained model
ch_ppocr_mobile_v2.0_cls	Original model for text angle classification	cls_mv3.yml	1.38M	inference model / trained model

4. Paddle-Lite Model

Version	Introduction	Model size	Detection model	Text Direction model	Recognition model	Paddle-Lite branch
PP-OCRv2	extra-lightweight chinese OCR optimized model	11M	download link	download link	download link	v2.10
PP-OCRv2(slim)	extra-lightweight chinese OCR optimized model	4.6M	download link	download link	download link	v2.10
PP-OCRv2	extra-lightweight chinese OCR optimized model	11M	download link	download link	download link	v2.9
PP-OCRv2(slim)	extra-lightweight chinese OCR optimized model	4.9M	download link	download link	download link	v2.9
V2.0	ppocr_v2.0 extra-lightweight chinese OCR optimized model	7.8M	download link	download link	download link	v2.9
V2.0(slim)	ppovr_v2.0 extra-lightweight chinese OCR optimized model	3.3M	download link	download link	download link	v2.9

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