https://blog.csdn.net/qq_35392791/article/details/123813363

https://www.zhihu.com/tardis/bd/art/94162374?source_id=1001

https://blog.csdn.net/qq_45738177/article/details/124518712

 sudo apt-get install php7.3-gd

纯js识别字母与图像

https://github.com/mateogianolio/ocr/tree/master

++++++++++++++++

python + opencv

https://blog.csdn.net/m0_56531210/article/details/123512942

没有X

https://blog.csdn.net/a497785609/article/details/131398010

完整例子

https://blog.csdn.net/wFitting/article/details/124039827

一个开源库

https://github.com/PaddlePaddle/PaddleOCR/blob/release/2.6/README_ch.md

cnocr

https://cnocr.readthedocs.io/zh/latest/usage/

CNOCR的demo，以及详细模型说明，作者的博客：https://huggingface.co/spaces/breezedeus/CnOCR-Demo