24 lines
760 B
TypeScript
24 lines
760 B
TypeScript
import {createWorker} from 'tesseract.js';
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import {AbortablePromise, Ai} from './ai.ts';
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export class Vision {
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constructor(private ai: Ai) {}
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/**
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* Convert image to text using Optical Character Recognition
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* @param {string} path Path to image
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* @returns {AbortablePromise<string | null>} Promise of extracted text with abort method
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*/
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ocr(path: string): AbortablePromise<string | null> {
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let worker: any;
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const p = new Promise<string | null>(async res => {
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worker = await createWorker(this.ai.options.ocr || 'eng', 2, {cachePath: this.ai.options.path});
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const {data} = await worker.recognize(path);
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await worker.terminate();
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res(data.text.trim() || null);
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});
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return Object.assign(p, {abort: () => worker?.terminate()});
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}
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}
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