public String detectText(Bitmap bitmap) {
    Log.d(TAG, "Initialization of TessBaseApi");
    TessDataManager.initTessTrainedData(context);
    TessBaseAPI tessBaseAPI = new TessBaseAPI();
    String path = TessDataManager.getTesseractFolder();
    Log.d(TAG, "Tess folder: " + path);
    tessBaseAPI.setDebug(true);
    tessBaseAPI.init(path, "eng");
    tessBaseAPI.setVariable(TessBaseAPI.VAR_CHAR_WHITELIST, "1234567890-");
    tessBaseAPI.setVariable(TessBaseAPI.VAR_CHAR_BLACKLIST, "!@#$%^&*()_+=qwertyuiop[]}{POIU" +
            "YTREWQasdASDfghFGHjklJKLl;L:'"\|~`xcvXCVbnmBNM,./<>?");
    tessBaseAPI.setPageSegMode(TessBaseAPI.OEM_TESSERACT_CUBE_COMBINED);
    Log.d(TAG, "Ended initialization of TessEngine");
    Log.d(TAG, "Running inspection on bitmap");
    tessBaseAPI.setImage(bitmap);
    String inspection = tessBaseAPI.getUTF8Text();
    Log.d(TAG, "Got data: " + inspection);
    tessBaseAPI.end();
    System.gc();
    return inspection;
}