主界面	https://github.com/tesseract-ocr/tesseract
安装	https://tesseract-ocr.github.io/tessdoc/Home.html
在Windows上安装	https://github.com/UB-Mannheim/tesseract/wiki
HomeBrew on Mac for Chinese	https://www.jianshu.com/p/6a0fff005f20
数据文件	https://tesseract-ocr.github.io/tessdoc/Data-Files.html
文档	https://github.com/tesseract-ocr/tessdoc
参数	https://github.com/tesseract-ocr/tessdoc/blob/master/ControlParams.md
改善质量	https://tesseract-ocr.github.io/tessdoc/ImproveQuality.html