网站收录是什么意思,网站 用户体验的重要性,做网站还是网页设计,西安咪豆网站建设公司OCR#xff08;Optical character recognition#xff0c;光学字符识别#xff09;是一种将图像中的手写字或者印刷文本转换为机器编码文本的技术。
tesseract-ocr 是由Google开发#xff0c;支持100多种语言
文档 tessdoc#xff1a;
https://tesseract-ocr.github.io…OCROptical character recognition光学字符识别是一种将图像中的手写字或者印刷文本转换为机器编码文本的技术。
tesseract-ocr 是由Google开发支持100多种语言
文档 tessdoc
https://tesseract-ocr.github.io/
https://tesseract-ocr.github.io/tessdoc/Installation.html
https://github.com/tesseract-ocr/tessdoc
Windows Tesseract下载地址https://digi.bib.uni-mannheim.de/tesseract/
选择 tesseract-ocr-w64-setup-v5.0.1.20220118.exe 勾选上Additional...会下载训练数据安装到 D:\Tesseract-OCR将D:\Tesseract-OCR添加到环境变量。
C:\Users\Administrator.DESKTOP-TPJL4TCtesseract
Usage:tesseract --help | --help-extra | --versiontesseract --list-langstesseract imagename outputbase [options...] [configfile...]OCR options:-l LANG[LANG] Specify language(s) used for OCR.
NOTE: These options must occur before any configfile.Single options:--help Show this help message.--help-extra Show extra help for advanced users.--version Show version information.--list-langs List available languages for tesseract engine.C:\Users\Administrator.DESKTOP-TPJL4TCtesseract --version
tesseract v5.0.1.20220118leptonica-1.78.0libgif 5.1.4 : libjpeg 8d (libjpeg-turbo 1.5.3) : libpng 1.6.34 : libtiff 4.0.9 : zlib 1.2.11 : libwebp 0.6.1 : libopenjp2 2.3.0Found AVX2Found AVXFound FMAFound SSE4.1Found libarchive 3.5.0 zlib/1.2.11 liblzma/5.2.3 bz2lib/1.0.6 liblz4/1.7.5 libzstd/1.4.5Found libcurl/7.77.0-DEV Schannel zlib/1.2.11 zstd/1.4.5 libidn2/2.0.4 nghttp2/1.31.0查看支持的语言包
tesseract --list-langs如果忘记勾选了训练数据也可以单独下载 https://digi.bib.uni-mannheim.de/tesseract/tessdata_fast/ 放在D:\Tesseract-OCR\tessdata目录下
识别图片中的文字默认只能识别英文和数字
tesseract 图片地址 存放识别结果的文本文件路径
比如
tesseract D:\dev\php\magook\trunk\server\go-opencv\detectcarband\licence_plate.jpg D:\dev\php\magook\trunk\server\go-opencv\detectcarband\licence_plate如果要识别中文那就需要加上语言包名称
tesseract D:\dev\php\magook\trunk\server\go-opencv\detectcarband\licence_plate.jpg D:\dev\php\magook\trunk\server\go-opencv\detectcarband\licence_plate -l chi_sim其实并不算很准比如如下车牌 识别结果是外.730V7
C:\Users\Administrator.DESKTOP-TPJL4TC tesseract --help-extra
Usage:tesseract --help | --help-extra | --help-psm | --help-oem | --versiontesseract --list-langs [--tessdata-dir PATH]tesseract --print-fonts-table [options...] [configfile...]tesseract --print-parameters [options...] [configfile...]tesseract imagename|imagelist|stdin outputbase|stdout [options...] [configfile...]OCR options:--tessdata-dir PATH Specify the location of tessdata path.--user-words PATH Specify the location of user words file.--user-patterns PATH Specify the location of user patterns file.--dpi VALUE Specify DPI for input image.--loglevel LEVEL Specify logging level. LEVEL can beALL, TRACE, DEBUG, INFO, WARN, ERROR, FATAL or OFF.-l LANG[LANG] Specify language(s) used for OCR.-c VARVALUE Set value for config variables.Multiple -c arguments are allowed.--psm NUM Specify page segmentation mode.--oem NUM Specify OCR Engine mode.
NOTE: These options must occur before any configfile.Page segmentation modes:0 Orientation and script detection (OSD) only.1 Automatic page segmentation with OSD.2 Automatic page segmentation, but no OSD, or OCR. (not implemented)3 Fully automatic page segmentation, but no OSD. (Default)4 Assume a single column of text of variable sizes.5 Assume a single uniform block of vertically aligned text.6 Assume a single uniform block of text.7 Treat the image as a single text line.8 Treat the image as a single word.9 Treat the image as a single word in a circle.10 Treat the image as a single character.11 Sparse text. Find as much text as possible in no particular order.12 Sparse text with OSD.13 Raw line. Treat the image as a single text line,bypassing hacks that are Tesseract-specific.OCR Engine modes:0 Legacy engine only.1 Neural nets LSTM engine only.2 Legacy LSTM engines.3 Default, based on what is available.Single options:-h, --help Show minimal help message.--help-extra Show extra help for advanced users.--help-psm Show page segmentation modes.--help-oem Show OCR Engine modes.-v, --version Show version information.--list-langs List available languages for tesseract engine.--print-fonts-table Print tesseract fonts table.--print-parameters Print tesseract parameters.
