Tesseract 无法加载任何语言（节点 tesseract.js）

Question

我运行了npm install tesseract.js，现在我尝试运行这段代码：

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);
});

真的很简单，Screen Shot 2018-01-13 at 16.51.06.png是同目录下的文字图片。

此代码输出：

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.

---

为了比较，这里是常规的 tesseract 命令（随 home-brew 安装）：

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

Um, I have a bf

Delivered

Ohh haha

---

我怎样才能让 tesseract.js 工作？

Answer 1

引用GitHub:

我可以通过从here 下载我需要的语言的训练语言数据来完成这项工作。解压缩文件并将其放在解决方案中的某个位置。然后对 Tesseract 的调用将如下所示。您可能希望保存对 create 返回的内容的引用，因为加载文件需要一些时间。

var 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

this solution worked for me, just if you neede