var OCRPlugin = require("nativescript-ocr");
var ocr = new OCRPlugin.OCR();

ocr.retrieveText({
  image: myImage
}).then(
    function (result) {
      console.log("Result: " + result.text);
    },
    function (error) {
      console.log("Error: " + error);
    }
);

import { OCR, RetrieveTextResult } from "nativescript-ocr";
import { ImageSource } from "image-source";

export Class MyOCRClass {
  private ocr: OCR;
  
  constructor() {
    this.ocr = new OCR();
  }

  doRecognize(): void {
    let img: ImageSource = new ImageSource();

    img.fromFile("~/samples/scanned.png").then((success: boolean) => {
      if (success) {
        this.ocr.retrieveText({
          image: img,
          whitelist: "ABCDEF",     // you can include only certain characters in the result
          blacklist: "0123456789", // .. or you can exclude certain characters from the result
          onProgress: (percentage: number ) => {
            console.log(`Decoding progress: ${percentage}%`);
          }
        }).then(
            (result: RetrieveTextResult) => {
              this.set(HelloWorldModel.BUSY_KEY, false);
              console.log(`Result: ${result.text}`);
            }, (error: string) => {
              console.log(`Error: ${err}`);
            })
      }
    });
  }
}