OCR operation now relies on local files

src/core/operations/OpticalCharacterRecognition.mjs

@@ -14,6 +14,8 @@ import { isWorkerEnvironment } from "../Utils.mjs";
 import Tesseract from "tesseract.js";
 const { TesseractWorker } = Tesseract;
 
+import process from "process";
+
 /**
  * Optical Character Recognition operation
  */
@@ -26,7 +28,7 @@ class OpticalCharacterRecognition extends Operation {
         super();
 
         this.name = "Optical Character Recognition";
-        this.module = "Image";
+        this.module = "OCR";
         this.description = "Optical character recognition or optical character reader (OCR) is the mechanical or electronic conversion of images of typed, handwritten or printed text into machine-encoded text.<br><br>Supported image formats: png, jpg, bmp, pbm.";
         this.infoURL = "https://wikipedia.org/wiki/Optical_character_recognition";
         this.inputType = "ArrayBuffer";
@@ -48,14 +50,22 @@ class OpticalCharacterRecognition extends Operation {
     async run(input, args) {
         const [showConfidence] = args;
 
+        if (!isWorkerEnvironment()) throw OperationError("This operation only works in a browser");
+
         const type = isImage(input);
         if (!type) {
             throw new OperationError("Invalid File Type");
         }
 
+        const assetDir = isWorkerEnvironment() ? `${self.docURL}/assets/` : `${process.cwd()}/src/core/vendor/`;
+
         try {
             const image = `data:${type};base64,${toBase64(input)}`;
-            const worker = new TesseractWorker();
+            const worker = new TesseractWorker({
+                workerPath: `${assetDir}/tesseract/worker.min.js`,
+                langPath: `${assetDir}/tesseract/lang-data/`,
+                corePath: `${assetDir}/tesseract/tesseract-core.wasm.js`,
+            });
             const result = await worker.recognize(image)
                 .progress(progress => {
                     if (isWorkerEnvironment()) {