method: 360DigiTech_AI_OCR2022-06-06

Authors: Meichao Luo, Zhenming Wang, Tao Zhang, Qiang Wang, Xiaogang Huang

Affiliation: 360DigiTech_AI

Description: We proposed a method based on RARE and ensemble it with a modified CRNN model. Center Loss with initial value was also applied. Besides model modification, we use a huge public dataset for pretrain and generated lots of data with the train set image style for finetune. Finally, we use a language model to correct errors.

method: Linklogis_BeeAI2021-07-20

Authors: WeiJie Luo,Guopeng Wang, Keshu Chen,Shuyuan Chen, Zhiyuan Huang, Yan Xu

Affiliation: Linklogis_BeeAI Team

Description: We mainly completed Task 2 with a word-level text recognition approach, involving a specialized attention mechanism. In addition, we apply Central-Loss to improve accuracy.

method: BreSee OCR2021-07-06

Authors: Tianpeng Li, Linzhi Zhuang, Mengyue Shao, Jie Wu, Jiling Wu

Affiliation: BreSee AI Lab, Zhejiang Sci-Tech University

Description: We modify the SRN network structure and loss function, synthesize a large number of data sets, train SRN and fine tune on the training set, and use a large number of data enhancement operations.

Ranking Table

Description Paper Source Code
DateMethodRecallPrecisionHmean
2022-06-06360DigiTech_AI_OCR97.68%97.79%97.74%
2021-07-20Linklogis_BeeAI97.67%97.69%97.68%
2021-07-06BreSee OCR96.78%96.92%96.85%
2021-04-01Linklogis_BigData96.48%96.89%96.68%
2020-10-16Samsung Life Insurance96.68%96.46%96.57%
2019-04-22H&H Lab96.35%96.52%96.43%
2021-03-10Sunshine_OCR95.59%95.69%95.64%
2021-01-16Sun Bear95.21%95.37%95.29%
2021-02-19Hanoi University of Science and Technology - MSOLab95.05%95.04%95.04%
2020-10-16Samsung Life Insurance95.04%94.82%94.93%
2019-04-22HeReceipt-Ensemble94.56%95.10%94.82%
2019-04-22Ping An Property & Casualty Insurance Company94.48%94.86%94.67%
2019-04-22CLOVA OCR94.30%94.88%94.59%
2019-04-22SCUT-DLVC-Lab-Lexicon94.18%94.88%94.53%
2019-04-22DenseNet-Attention Recognition94.29%94.58%94.44%
2020-12-25hoainv94.31%94.34%94.33%
2019-04-22CITlab Argus Text Recognition93.55%93.61%93.58%
2021-01-03Sun Asterisk - AI Research93.47%93.58%93.52%
2019-04-18Unet followed by CRNN with CTC88.58%87.30%87.93%
2019-04-23BOE_IOT_AIBD87.84%86.66%87.24%
2019-04-22CRNN after UNet Segmentation85.77%86.48%86.12%
2019-04-22BiLstmCtcIgnoreSpaces-Segment83.38%87.37%85.33%
2019-04-22IFLYTEK-textRec_v480.63%81.72%81.17%
2019-04-22SituTech_OCR77.81%80.10%78.94%
2020-10-14ResNet_BiLSTM_Attention74.05%77.81%75.88%
2019-04-19Attention based OCR70.87%72.27%71.57%
2019-04-22A Text Extraction Method Based on Modified CRNN26.33%72.53%38.63%
2019-04-18BiLSTM+ctc28.75%49.69%36.42%
2019-04-21ICA-IVA19.48%40.32%26.27%
2019-04-22Task 2 - Scanned Receipt OCR (Submitted by Intuit Inc.)1.05%3.96%1.66%
2019-04-22Receipt Info Extracting Task2 letter-recognizing0.24%0.97%0.38%
2019-04-16VIL0.00%0.00%0.00%
2019-04-22CRNN_Autohome0.00%0.00%0.00%

Ranking Graphic