Android Tesseract 错误.数据文件未在 [英] Android Tesseract Error. Data file not found at
问题描述
我正在学习使用 NDK 和 opencv 的 android.
I'm studying android using NDK with opencv.
我成功使用 ndk.所以我得到了可用的数据(我的意思是数据是由 canny 完成的.)
I success using ndk. So I get usable data ( I mean the data was done by canny.)
当我使用 Tesseract 时，
When I use Tesseract,
在/storage/emulated/0/tesseract/tessdata/eng.traineddata 中找不到数据文件
Data file not found at /storage/emulated/0/tesseract/tessdata/eng.traineddata
发生此错误.
我已经检查过adroid/app/src/main/assets/tessdata/eng.traineddata有训练数据....我不知道为什么我在那里收到错误.
I already checked adroid/app/src/main/assets/tessdata/eng.traineddata there are the traineddata.... I don't know why I get an error there.
请...请帮帮我...
plz... help me please...
public class ocrActivity extends AppCompatActivity {
private static final String TAG = "opencv";
private Mat matInput=new Mat();
private Mat matResult=new Mat();
private Mat matFinal=new Mat();
public Uri luck;
public Bitmap testbm;
public Bitmap resultbm;
public native void ConvertRGBtoGray(long matAddrInput, long matAddrResult);
static {
System.loadLibrary("opencv_java3");
System.loadLibrary("native-lib");
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON,
WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
setContentView(R.layout.activity_ocr);
ImageView iv1 = findViewById(R.id.imageview01);
Uri data = null;
Intent takePhoto = getIntent();
String flag = takePhoto.getStringExtra("flag");
if (flag.equals("imageUri")) {
data = takePhoto.getParcelableExtra("imageUri");
} else if (flag.equals("albumURI")) {
data = takePhoto.getParcelableExtra("albumURI");
}
luck = data;
testbm=test123();
//
Utils.bitmapToMat(testbm,matInput);
if ( matResult == null )
matResult = new Mat(matInput.rows(), matInput.cols(), matInput.type());
ConvertRGBtoGray(matInput.getNativeObjAddr(), matResult.getNativeObjAddr());
Utils.matToBitmap(matResult,testbm);
iv1.setImageBitmap(testbm);
----------------Doing very Well--------------------------
TessOCR mTessOCR = new TessOCR();
String result = mTessOCR.getOCRResult(testbm);
System.out.println(result);
}
public class TessOCR {
private TessBaseAPI mTess;
public TessOCR() {
// TODO Auto-generated constructor stub
mTess = new TessBaseAPI();
String datapath = Environment.getExternalStorageDirectory() + "/tesseract/";
String language = "eng";
File dir = new File(datapath + "tessdata/");
if (!dir.exists())
dir.mkdirs();
mTess.init(datapath, language);
}
public String getOCRResult(Bitmap bitmap) {
mTess.setImage(bitmap);
String result = mTess.getUTF8Text();
return result;
}
public void onDestroy() {
if (mTess != null)
mTess.end();
}
}
/**
* A native method that is implemented by the 'native-lib' native library,
* which is packaged with this application.
*/
public native String stringFromJNI();
public Bitmap test123() {
Uri photo = fuck;
Bitmap bm=null;
try {
bm = MediaStore.Images.Media.getBitmap(getContentResolver(), photo);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return bm;
}
}
错误代码！
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.z2_sooodt.ocr/com.example.z2_sooodt.ocr.ocrActivity}: java.lang.IllegalArgumentException: Data file not found at /storage/emulated/0/tesseract/tessdata/eng.traineddata
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2665)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
Caused by: java.lang.IllegalArgumentException: Data file not found at /storage/emulated/0/tesseract/tessdata/eng.traineddata
at com.googlecode.tesseract.android.TessBaseAPI.init(TessBaseAPI.java:339)
at com.googlecode.tesseract.android.TessBaseAPI.init(TessBaseAPI.java:303)
at com.example.z2_sooodt.ocr.ocrActivity$TessOCR.<init>(ocrActivity.java:110)
at com.example.z2_sooodt.ocr.ocrActivity.onCreate(ocrActivity.java:88)
at android.app.Activity.performCreate(Activity.java:6679)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
推荐答案
您收到一个错误，指出在
You are getting an error which states that traineddata file cannot be found in
/storage/emulated/0/tesseract/tessdata/eng.traineddata
/storage/emulated/0/tesseract/tessdata/eng.traineddata
这是您设备上tessdata文件夹的路径，而
which is a path to tessdata folder on your device, while
adroid/app/src/main/assets/tessdata/eng.traineddata
adroid/app/src/main/assets/tessdata/eng.traineddata
是 PC 上traineddata 文件的路径(它与您的apk 一起提供，但除非您这样做，否则不会被提取).
is a path to traineddata file on your PC (which is shipped with your apk but isn't extracted unless you do it).
您需要将文件从资产中提取到设备的存储中.请参阅如何将文件从assets"文件夹复制到 sdcard?
You need to extract file from assets to the device's storage. See How to copy files from 'assets' folder to sdcard?
这篇关于Android Tesseract 错误.数据文件未在的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
