javascript - 如何在nodejs中使用Tesseract.recognize

Question

我想做一个 OCR 程序，但我在声明“Tesseract.recognize”方法时遇到了一些问题

这是我的代码:

const express = require('express');

const fs= require('fs');

const multer = require('multer');

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

const app = express();

// app.use(bodyParser.urlencoded({extended: true}))

const PORT = process.env.PORT | 5000;   

var Storage = multer.diskStorage({
    destination: function (req, file, callback) {
      callback(null, 'images')
    },
    filename: function (req, file, callback) {
      callback(null, file.orignalname);
    }
});
var upload = multer({
 storage: Storage 
}).array('image', 3);
//route
app.post('/', (req, res) => {});

app.post('/upload', (req, res) => {
    console.log(req.file);
    upload(req, res , err => {
        if (err) {
            console.log(err);
            return res.send('somthing went wrong');
        }
        return res.send('file uploaded successfully');
    });
});

var image = fs.readFileSync(__dirname + '/images/cv.jpg', 
    {
        encoding:null
    });

Tesseract.recognize(image)
    .progress(function(p) {
        console.log('progress', p);
    })
    .then(function(result) {
        res.send('result', result);
    });

app.listen(PORT, () => {
    console.log('Server running on PORT ${PORT}')
});

这是我的最终结果:

.progress(function(p) {
     ^

TypeError: Tesseract.recognize(...).progress is not a function
    at Object.<anonymous> (C:\Users\de\Desktop\MR.Azmani Project\ANGULAR\ocr\server.js:46:6)
    at Module._compile (internal/modules/cjs/loader.js:1133:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1153:10)
    at Module.load (internal/modules/cjs/loader.js:977:32)
    at Function.Module._load (internal/modules/cjs/loader.js:877:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:74:12)
    at internal/main/run_main_module.js:18:47
[nodemon] app crashed - waiting for file changes before starting...

这就是在此过程中终端中的结果应该是什么样子

这是终端的最终结果

谢谢

Answer 1

.progress在 tesseract.js 的版本 2 中被删除(有一篇关于 here 的博客文章。版本 1 仍在 Github here 上，并且可能仍然有效，因此您可以 npm i <a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="9ce8f9efeff9eefdffe8b2f6efdcadb2acb2ada5" rel="noreferrer noopener nofollow">[email protected]</a> 来获得您期望的行为，或者查看当前版本的文档和 examples 以更新 v2 的代码。