Tesseract无法加载任何语言(节点tesseract.js)

Question

我运行了npm install tesseract.js，现在我尝试运行以下代码：

const Tesseract = require('tesseract.js');

const filename = 'Screen Shot 2018-01-13 at 16.51.06.png';

Tesseract.recognize(filename)
.progress(p => {
  console.log('progress', p)
}).catch(err =>
  console.error(err)
).then(result => {
  console.log(result.text);
  process.exit(0);
});

非常简单，Screen Shot 2018-01-13 at 16.51.06.png是同一目录中文本的图像。

该代码输出：

progress { status: 'loading tesseract core' }
progress { status: 'loaded tesseract core' }
progress { status: 'initializing tesseract', progress: 0 }
pre-main prep time: 54 ms
progress { status: 'initializing tesseract', progress: 1 }
progress { status: 'loading eng.traineddata', progress: 0 }
progress { status: 'loading eng.traineddata', progress: 1 }
progress { status: 'initializing api', progress: 0 }
Failed loading language 'eng'
Tesseract couldn't load any languages!
progress { status: 'initializing api', progress: 0.3 }
progress { status: 'initializing api', progress: 0.6 }
progress { status: 'initializing api', progress: 1 }
progress { status: 'recognizing text', progress: 0 }
AdaptedTemplates != NULL:Error:Assert failed:in file ../classify/adaptmatch.cpp, line 190

/Users/George/Documents/Projects/ssm-bot/node_modules/tesseract.js-core/index.js:4
function f(a){throw a;}var h=void 0,i=!0,j=null,k=!1;function aa(){return function(){}}function ba(a){return function(){return a}}var n,Module;Module||(Module=eval("(function() { try { return TesseractCore || {} } catch(e) { return {} } })()"));var ca={},da;for(da in Module)Module.hasOwnProperty(da)&&(ca[da]=Module[da]);var ea=i,fa=!ea&&i;
              ^
abort() at Error
    at Na (/Users/George/Documents/Projects/ssm-bot/node_modules/tesseract.js-core/index.js:32:26)
    at Object.ka [as abort] (/Users/George/Documents/Projects/ssm-bot/node_modules/tesseract.js-core/index.js:507:108)
    at _abort (/Users/George/Documents/Projects/ssm-bot/node_modules/tesseract.js-core/index.js:373:173)
    at $L (/Users/George/Documents/Projects/ssm-bot/node_modules/tesseract.js-core/index.js:383:55709)
    at jpa (/Users/George/Documents/Projects/ssm-bot/node_modules/tesseract.js-core/index.js:388:22274)
    at lT (/Users/George/Documents/Projects/ssm-bot/node_modules/tesseract.js-core/index.js:387:80568)
    at mT (/Users/George/Documents/Projects/ssm-bot/node_modules/tesseract.js-core/index.js:387:80700)
    at Array.BS (/Users/George/Documents/Projects/ssm-bot/node_modules/tesseract.js-core/index.js:387:69011)
    at bP (/Users/George/Documents/Projects/ssm-bot/node_modules/tesseract.js-core/index.js:383:110121)
    at jT (/Users/George/Documents/Projects/ssm-bot/node_modules/tesseract.js-core/index.js:387:80280)
If this abort() is unexpected, build with -s ASSERTIONS=1 which can give more information.

作为比较，下面是常规的tesseract命令(安装在home-brew中)：

$ tesseract 'Screen Shot 2018-01-13 at 16.51.06.png' stdout
Warning. Invalid resolution 0 dpi. Using 70 instead.
Do you like anyone?

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Delivered

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怎样才能让tesseract.js工作？

Answer 1

引用GitHub

通过从这里下载我需要的语言的经过培训的语言数据，我就能够做到这一点。解压缩文件并将其放在解决方案中的某个位置。那么，向Tesseract发出的电话将类似于下面的内容。您可能希望保存对create返回内容的引用，因为加载该文件需要一些时间。 tesseractPromise = tesseract.create({ langPath："eng.traineddata“}).recognize(imagePath，'eng')；

eng.traineddata必须进入根文件夹，或与调用节点脚本相同的目录。

Answer 2

您需要从应用程序的根目录中删除eng.traineddata并重新启动应用程序。