tesseract.js-v2-beta-sample-code-2.js

const { createWorker } = require('tesseract.js');
const image = 'https://tesseract.projectnaptha.com/img/eng_bw.png';
const worker = createWorker();
let isReady = false;
// Called as early as possible
(async ()=> {
  await worker.load();
  await worker.loadLanguage('eng');
  await worker.initialize('eng');
  isReady = true;
})();
// Do other stuffs
(async (img) => {
  if (isReady) {
    const { data: { text } } = await worker.recognize(img);
    console.log(text);
  }
})(image);

Hey!
Sorry, beginner here! How can I assure, that the second part only runs, as soon the first is finished? I mean this just skips if isReady is still false. But how to wait for it to be ready? Is there a way?

Thank you so much!

A quick way (but not the best) is to use setInterval to wait until the the first part is over, you can reference the code below:

const { createWorker } = require('tesseract.js');                                                  
const image = 'https://tesseract.projectnaptha.com/img/eng_bw.png';                                
const worker = createWorker();
let isReady = false;
// Called as early as possible
(async ()=> {
  await worker.load();
  await worker.loadLanguage('eng');
  await worker.initialize('eng');
  isReady = true;
})();

const doOCR = (img) => { 
  const timer = setInterval(async () => {
    if (isReady) {
      clearInterval(timer);
      console.log("ready");
      const { data: { text } } = await worker.recognize(img);
      console.log(text); 
    } else {
      console.log("not ready");
    }
  }, 500)
};

doOCR(image);

actually, thats pretty much how i did it now. the only difference is, that i created some kind of queue to process new images. works quite well. right now I'm trying to use multiple workers to speed things up.
have a good weekend and stay safe!

Yeah, queue is a better way to solve the issue, especially when you want to keep the order of the execution.
Multiple workers should be able to speed up and hope you can fulfill your needs. 😄