2016-09-19 274 views
0

我正在開發使用ocr進行文本檢測的應用程序。 我從https://github.com/GautamGupta/Simple-Android-OCR得到源代碼。當我使用最新的android工作室。我沒有得到TessBaseAPI的導入文件。我嘗試添加tess-two到項目模塊。但它不起作用。如何可能運行,下面顯示了我寫的地方。Android工作室沒有導入文件

package com.acs.ocr; 

import android.content.Intent; 
import android.content.res.AssetManager; 
import android.graphics.Bitmap; 
import android.graphics.BitmapFactory; 
import android.graphics.Matrix; 
import android.media.ExifInterface; 
import android.net.Uri; 
import android.os.Environment; 
import android.provider.MediaStore; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.View; 
import android.widget.Button; 
import android.widget.EditText; 

import com.google.android.gms.appindexing.Action; 
import com.google.android.gms.appindexing.AppIndex; 
import com.google.android.gms.common.api.GoogleApiClient; 

import java.io.File; 
import java.io.FileOutputStream; 
import java.io.IOException; 
import java.io.InputStream; 
import java.io.OutputStream; 

public class 
MainActivity extends AppCompatActivity { 

public static final String PACKAGE_NAME = "com.datumdroid.ocr"; 
public static final String DATA_PATH = Environment 
     .getExternalStorageDirectory().toString() + "/SimpleAndroidOCR/"; 

public static final String lang = "eng"; 

private static final String TAG = "MainActivity.java"; 

protected Button _button; 
// protected ImageView _image; 
protected EditText _field; 
protected String _path; 
protected boolean _taken; 

protected static final String PHOTO_TAKEN = "photo_taken"; 
/** 
* ATTENTION: This was auto-generated to implement the App Indexing API. 
* See https://g.co/AppIndexing/AndroidStudio for more information. 
*/ 
private GoogleApiClient client; 


@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 

    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 { 

      AssetManager assetManager = getAssets(); 
      InputStream in = assetManager.open("tessdata/" + lang + ".traineddata"); 
      //GZIPInputStream gin = new GZIPInputStream(in); 
      OutputStream out = new FileOutputStream(DATA_PATH 
        + "tessdata/" + lang + ".traineddata"); 

      // Transfer bytes from in to out 
      byte[] buf = new byte[1024]; 
      int len; 
      //while ((lenf = gin.read(buff)) > 0) { 
      while ((len = in.read(buf)) > 0) { 
       out.write(buf, 0, len); 
      } 
      in.close(); 
      //gin.close(); 
      out.close(); 

      Log.v(TAG, "Copied " + lang + " traineddata"); 
     } catch (IOException e) { 
      Log.e(TAG, "Was unable to copy " + lang + " traineddata " + e.toString()); 
     } 
    } 


    // _image = (ImageView) findViewById(R.id.image); 
    _field = (EditText) findViewById(R.id.field); 
    _button = (Button) findViewById(R.id.button); 
    _button.setOnClickListener(new ButtonClickHandler()); 

    _path = DATA_PATH + "/ocr.jpg"; 

    // ATTENTION: This was auto-generated to implement the App Indexing API. 
    // See https://g.co/AppIndexing/AndroidStudio for more information. 
    client = new GoogleApiClient.Builder(this).addApi(AppIndex.API).build(); 
} 

@Override 
public void onStart() { 
    super.onStart(); 

    // ATTENTION: This was auto-generated to implement the App Indexing API. 
    // See https://g.co/AppIndexing/AndroidStudio for more information. 
    client.connect(); 
    Action viewAction = Action.newAction(
      Action.TYPE_VIEW, // TODO: choose an action type. 
      "Main Page", // TODO: Define a title for the content shown. 
      // TODO: If you have web page content that matches this app activity's content, 
      // make sure this auto-generated web page URL is correct. 
      // Otherwise, set the URL to null. 
      Uri.parse("http://host/path"), 
      // TODO: Make sure this auto-generated app URL is correct. 
      Uri.parse("android-app://com.acs.ocr/http/host/path") 
    ); 
    AppIndex.AppIndexApi.start(client, viewAction); 
} 

@Override 
public void onStop() { 
    super.onStop(); 

    // ATTENTION: This was auto-generated to implement the App Indexing API. 
    // See https://g.co/AppIndexing/AndroidStudio for more information. 
    Action viewAction = Action.newAction(
      Action.TYPE_VIEW, // TODO: choose an action type. 
      "Main Page", // TODO: Define a title for the content shown. 
      // TODO: If you have web page content that matches this app activity's content, 
      // make sure this auto-generated web page URL is correct. 
      // Otherwise, set the URL to null. 
      Uri.parse("http://host/path"), 
      // TODO: Make sure this auto-generated app URL is correct. 
      Uri.parse("android-app://com.acs.ocr/http/host/path") 
    ); 
    AppIndex.AppIndexApi.end(client, viewAction); 
    client.disconnect(); 
} 

public class ButtonClickHandler implements View.OnClickListener { 
    public void onClick(View view) { 
     Log.v(TAG, "Starting Camera app"); 
     startCameraActivity(); 
    } 
} 

protected void startCameraActivity() { 
    File file = new File(_path); 
    Uri outputFileUri = Uri.fromFile(file); 

    final Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
    intent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri); 

    startActivityForResult(intent, 0); 
} 

@Override 
protected void onActivityResult(int requestCode, int resultCode, Intent data) { 

    Log.i(TAG, "resultCode: " + resultCode); 

    if (resultCode == -1) { 
     onPhotoTaken(); 
    } else { 
     Log.v(TAG, "User cancelled"); 
    } 
} 

@Override 
protected void onSaveInstanceState(Bundle outState) { 
    outState.putBoolean(MainActivity.PHOTO_TAKEN, _taken); 
} 

@Override 
protected void onRestoreInstanceState(Bundle savedInstanceState) { 
    Log.i(TAG, "onRestoreInstanceState()"); 
    if (savedInstanceState.getBoolean(MainActivity.PHOTO_TAKEN)) { 
     onPhotoTaken(); 
    } 
} 

protected void onPhotoTaken() { 
    _taken = true; 

    BitmapFactory.Options options = new BitmapFactory.Options(); 
    options.inSampleSize = 4; 

    Bitmap bitmap = BitmapFactory.decodeFile(_path, options); 

    try { 
     ExifInterface exif = new ExifInterface(_path); 
     int exifOrientation = exif.getAttributeInt(
       ExifInterface.TAG_ORIENTATION, 
       ExifInterface.ORIENTATION_NORMAL); 

     Log.v(TAG, "Orient: " + exifOrientation); 

     int rotate = 0; 

     switch (exifOrientation) { 
      case ExifInterface.ORIENTATION_ROTATE_90: 
       rotate = 90; 
       break; 
      case ExifInterface.ORIENTATION_ROTATE_180: 
       rotate = 180; 
       break; 
      case ExifInterface.ORIENTATION_ROTATE_270: 
       rotate = 270; 
       break; 
     } 

     Log.v(TAG, "Rotation: " + rotate); 

     if (rotate != 0) { 

      // Getting width & height of the given image. 
      int w = bitmap.getWidth(); 
      int h = bitmap.getHeight(); 

      // Setting pre rotate 
      Matrix mtx = new Matrix(); 
      mtx.preRotate(rotate); 

      // Rotating Bitmap 
      bitmap = Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, false); 
     } 

     // Convert to ARGB_8888, required by tess 
     bitmap = bitmap.copy(Bitmap.Config.ARGB_8888, true); 

    } catch (IOException e) { 
     Log.e(TAG, "Couldn't correct orientation: " + e.toString()); 
    } 

    // _image.setImageBitmap(bitmap); 

    Log.v(TAG, "Before baseApi"); 

    TessBaseAPI baseApi = new TessBaseAPI(); 
    baseApi.setDebug(true); 
    baseApi.init(DATA_PATH, lang); 
    baseApi.setImage(bitmap); 

    String recognizedText = baseApi.getUTF8Text(); 

    baseApi.end(); 

    // You now have the text in recognizedText var, you can do anything with it. 
    // We will display a stripped out trimmed alpha-numeric version of it (if lang is eng) 
    // so that garbage doesn't make it to the display. 

    Log.v(TAG, "OCRED TEXT: " + recognizedText); 

    if (lang.equalsIgnoreCase("eng")) { 
     recognizedText = recognizedText.replaceAll("[^a-zA-Z0-9]+", " "); 
    } 

    recognizedText = recognizedText.trim(); 

    if (recognizedText.length() != 0) { 
     _field.setText(_field.getText().toString().length() == 0 ? recognizedText : _field.getText() + " " + recognizedText); 
     _field.setSelection(_field.getText().toString().length()); 
    } 

    // Cycle done. 
} 


} 

在此代碼中,TessBaseAPI未導入。它如何解決?

+0

添加NDK支持 – Vinay

+0

我添加了ndk,但沒有解決 –

回答

1

,而不是試圖自己建立一個項目,按照instructions on the project website加入

compile 'com.rmtheis:tess-two:6.0.4' 

到您的應用程序的文件的build.gradle使用預建版本。

+0

@rmthesis感謝您的幫助。我開發了ocr應用程序。它運作良好。但它沒有準確性。當我將圖像轉換爲文本時,它不顯示正確的文本。如何提高更高的準確性以及如何減小應用程序的大小。 –