我正在使用tess-two库在android中构建一个基于OCR的应用程序

Question

我正在android中构建一个基于OCR的应用程序，用户可以在其中拍摄并剪切它。图像转换为位图然后转换为文本，但我无法将图像转换为文本。我认为getResults（）中存在错误.TessOCR类的代码仅来自堆栈溢出。请帮我解决一下这个。 谢谢。

`private void processing1() {
    try {
        Intent captureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        startActivityForResult(captureIntent, CAMERA_CAPTURE);
    } catch (ActivityNotFoundException anfe) {
        String errorMessage = "Whoops - your device doesn't support capturing images!";
        Toast toast = Toast.makeText(Main2Activity.this, errorMessage, Toast.LENGTH_SHORT);
        toast.show();
        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                new TessOCR(assetManager);
                new TessOCR(assetManager).getResults(thePic);
                intent = getIntent();
                Bundle bd = intent.getExtras();
                if(bd != null)
                {
                    String getName = (String) bd.get("key");
                    tv.setText(getName);
                }
                Toast toast = Toast.makeText(Main2Activity.this, "SCANNED", Toast.LENGTH_SHORT);
                toast.show();
                new TessOCR(assetManager).onDestroy();
                            }
        });
    }
}
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (resultCode == RESULT_OK) {
        if (requestCode == CAMERA_CAPTURE) {
            picUri = data.getData();
            performCrop();
        } else if (requestCode == PIC_CROP) {
            Bundle extras = data.getExtras();
             thePic = extras.getParcelable("data");
            picView.setImageBitmap(thePic);
                         }
    }
}
        private void performCrop() {
    try {
        Intent cropIntent = new Intent("com.android.camera.action.CROP");
         cropIntent.setDataAndType(picUri, "image/*");
         cropIntent.putExtra("crop", "true");
         cropIntent.putExtra("aspectX", 1);
        cropIntent.putExtra("aspectY", 1);
        cropIntent.putExtra("outputX", 256);
        cropIntent.putExtra("outputY", 256);
        cropIntent.putExtra("return-data", true);
        startActivityForResult(cropIntent, PIC_CROP);
    } catch (ActivityNotFoundException anfe) {
        String errorMessage = "Whoops - your device doesn't support the crop action!";
        Toast toast = Toast.makeText(this, errorMessage, Toast.LENGTH_SHORT);
        toast.show();
    }
}`

我的TessOCR课程在

之下

 `public static final String DATA_PATH = Environment
                .getExternalStorageDirectory().toString() + "/AndroidOCR/";
        public static final String lang = "eng";
        private static final String TAG = "TESSERACT";
        private AssetManager assetManager;
        private TessBaseAPI mTess;
    Context context;
        public TessOCR(AssetManager assetManager) {
            Log.i(TAG, DATA_PATH);
            this.assetManager = assetManager;
            String[] paths = new String[]{DATA_PATH, DATA_PATH + "tessdata/"};
            for (String path : paths) {
                File dir = new File(path);
                if (!dir.exists()) {
                    if (!dir.mkdirs()) {
                        Log.v(TAG, "ERROR: Creation of directory " + path + " on sdcard failed");
                        return;
                    } else {
                        Log.v(TAG, "Created directory " + path + " on sdcard");
                    }
                }
            }
            if (!(new File(DATA_PATH + "tessdata/" + lang + ".traineddata")).exists()) {
                try {
                    InputStream in = assetManager.open("tessdata/" + lang + ".traineddata");
                    OutputStream out = new FileOutputStream(new File(DATA_PATH + "tessdata/", lang + ".traineddata"));
                    byte[] buf = new byte[1024];
                    int len;
                    while ((len = in.read(buf)) != -1) {
                        out.write(buf, 0, len);
                    }
                    in.close();
                    out.close();
                    Log.v(TAG, "Copied " + lang + " traineddata");
                } catch (IOException e) {
                    Log.e(TAG, "Was unable to copy " + lang + " traineddata " + e.toString());
                }
            }
            mTess = new TessBaseAPI();
            mTess.setDebug(true);
            mTess.init(DATA_PATH, lang);
        }
    public String getResults(Bitmap bitmap) {
        mTess.setImage(bitmap);
        String result = mTess.getUTF8Text();
        Intent intent = new Intent(context, Main2Activity.class);
        intent.putExtra(result,"key");
        return result;
    }
    public void onDestroy() {
        if (mTess != null)
            mTess.end();
    }
}`