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<!DOCTYPE HTML> | ||
<html> | ||
<head> | ||
<script src="/dist/tesseract.dev.js"></script> | ||
</head> | ||
<body> | ||
<input type="file" id="uploader" multiple> | ||
<script type="module"> | ||
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// This example builds on "basic-efficient.html". | ||
// Rather than using a single worker, a scheduler manages a pool of multiple workers. | ||
// While performance is similar for a single file, this parallel processing results in significantly | ||
// faster speeds when used with multiple files. | ||
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const scheduler = Tesseract.createScheduler(); | ||
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// Creates worker and adds to scheduler | ||
const workerGen = async () => { | ||
const worker = await Tesseract.createWorker({ | ||
corePath: '../../node_modules/tesseract.js-core', | ||
workerPath: "/dist/worker.dev.js", | ||
logger: function(m){console.log(m);} | ||
}); | ||
await worker.loadLanguage('eng'); | ||
await worker.initialize('eng'); | ||
scheduler.addWorker(worker); | ||
} | ||
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const workerN = 4; | ||
(async () => { | ||
const resArr = Array(workerN); | ||
for (let i=0; i<workerN; i++) { | ||
resArr[i] = await workerGen(); | ||
} | ||
})(); | ||
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const recognize = async function(evt){ | ||
const files = evt.target.files; | ||
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for (let i=0; i<files.length; i++) { | ||
scheduler.addJob('recognize', files[i]).then((x) => console.log(x.data.text)) | ||
} | ||
} | ||
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const elm = document.getElementById('uploader'); | ||
elm.addEventListener('change', recognize); | ||
</script> | ||
</body> | ||
</html> |
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