Android OCR Using Tesseract

Question

I am trying to built an OCR Application in android using Tesseract Library.

Here is the code attached:

public class TessOCR {
    private TessBaseAPI mTess;

public TessOCR() {
    // TODO Auto-generated constructor stub

    mTess = new TessBaseAPI();
    String datapath = Environment.getExternalStorageDirectory() + "/tesseract/";
    String language = "sseg";
    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();
}

When I am calling new TessOCR() in my MainAcitivity It gives me the error

09-02 16:10:56.677 14225-14225/com.example.pulkitmital.swipetabtoolbar E/AndroidRuntime﹕ FATAL EXCEPTION: main Process: com.example.pulkitmital.swipetabtoolbar, PID: 14225 java.lang.IllegalArgumentException: Data path must contain subfolder tessdata! at com.googlecode.tesseract.android.TessBaseAPI.init(TessBaseAPI.java:344) at com.googlecode.tesseract.android.TessBaseAPI.init(TessBaseAPI.java:317) at com.example.pulkitmital.swipetabtoolbar.TessOCR.(TessOCR.java:22) at com.example.pulkitmital.swipetabtoolbar.Tab1.doOCR(Tab1.java:326) at com.example.pulkitmital.swipetabtoolbar.Tab1.access$000(Tab1.java:42) at com.example.pulkitmital.swipetabtoolbar.Tab1$3.onClick(Tab1.java:168) at android.view.View.performClick(View.java:4785) at android.view.View$PerformClick.run(View.java:19884) at android.os.Handler.handleCallback(Handler.java:746) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5343) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:905) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:700)

But the folder is already there.

Please help me to get rid of this problem.

Did you train your own language file called sseg.traineddata? The traineddata file should go in a subfolder named tessdata, which should go in your tesseract folder. — rmtheis
– rmtheis, Commented Sep 3, 2015 at 1:56
@rmtheis Yeah I have done it. Main Issue is that I forgot to add permission in manifest file — Corrupt
– Corrupt, Commented Sep 3, 2015 at 4:23
Glad you got it working. To help others, you should add your solution as an answer here, and check the check mark next to it to choose your own answer as the working solution. — rmtheis
– rmtheis, Commented Sep 5, 2015 at 3:02

priyankvex · Accepted Answer · 2015-09-02 11:16:53Z

1

Replace this line :

mTess.init(datapath, language);

with :

mTess.init(datapath + "tessdata/", language);

answered Sep 2, 2015 at 11:16

priyankvex

6,0706 gold badges33 silver badges44 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

Corrupt Over a year ago

I have already do the change that you told but its giving me error " Data path doest not exist!"

atasoyh Over a year ago

You could try create this folder after request mTess.init. Can you try it?

Corrupt Over a year ago

Thanks for your help. Actually the problem is that i forgot to add permission for reading storage in manifest file.

Corrupt · Accepted Answer · 2015-09-05 04:27:40Z

0

Basically Error is due to I forget to add permission to read from external storage in manifest file.

<uses-permission
        android:name="android.permission.READ_EXTERNAL_STORAGE"
        android:maxSdkVersion="18" />

Just Add this line to your AndroidManifest and it will get resolved.

answered Sep 5, 2015 at 4:27

Corrupt

3134 silver badges16 bronze badges

Collectives™ on Stack Overflow

Android OCR Using Tesseract

2 Answers 2

3 Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

3 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related