method: TencentAILab2017-10-27

Authors: Jingchao Zhou, Hao Wang, Yitong Wang, Zhifeng Li

Description: Our method consists of two networks: text detection network employed in task 1.1 and word recognition network employed in task 1.2. Two networks are integrated with cascade training to achieve superior performance.

method: Yunos_AliRobot2017-01-20

Authors: yunos

method: AlimamaCV2016-05-13

Authors: Quan Chen, Tiezheng Ge, Zhiqiang Zhang, Minghui Li, Kun Gai

Description: We approach this task with a combination of three deep neural networks and a language model. Specifically , a LSTM model is used to accomplish word recognition based on the features generated by a CNN model. The final words are decoded by a bi-gram language model and their locations are refined by a location regression network. Two internal text corpora are involved in the training procedure. For "strongly" and "weakly" version, the given corresponding vocabulary is simply used as the final output filter.

Ranking Table

Description Paper Source Code
DateMethodRecallPrecisionHmean
2017-10-27TencentAILab90.19%90.45%90.32%
2017-01-20Yunos_AliRobot81.29%94.81%87.53%
2016-05-13AlimamaCV79.49%95.81%86.89%
2016-01-30Megvii-Image++79.21%92.53%85.35%
2015-10-20Deep2Text II+73.92%92.27%82.08%
2015-04-02Stradvision-273.02%83.93%78.10%
2015-04-02Deep2Text II-173.37%80.97%76.98%
2015-04-02StradVision-170.17%84.72%76.76%
2015-03-30Deep2Text I61.40%83.46%70.75%
2015-04-03PAL (v1.5)61.54%65.22%63.33%
2015-04-03pal_v1.661.47%65.14%63.26%
2015-04-02pal_v1.063.14%60.65%61.87%
2015-04-02pal_v1.362.17%60.61%61.38%
2015-04-01NJU Text (Version3)41.31%60.12%48.97%
2015-05-04Baseline OpenCV 3.0 + Tesseract37.13%46.48%41.28%
2015-04-03TextCatcher-2 (LRDE)40.26%32.11%35.73%
2018-04-25Full YOLO + (CNN+LSTM)22.81%24.35%23.55%
2015-04-02TextCatcher-1 (LRDE)5.01%11.58%6.99%

Ranking Graphic