I have developed one OCR application which works perfectly on Android version 4.0 but not on 2.2 and 2.3 Android version. I don't know what's the problem with this versions. I searched a lot on Google but no reason found.
package com.datumdroid.android.ocr.simple;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.zip.GZIPInputStream;
import android.app.Activity;
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.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import com.googlecode.tesseract.android.TessBaseAPI;
public class SimpleAndroidOCRActivity extends Activity {
public static final String PACKAGE_NAME = "com.datumdroid.android.ocr.simple";
public static final String DATA_PATH = Environment
.getExternalStorageDirectory().toString() + "/SimpleAndroidOCR/";
// You should have the trained data file in assets folder
// You can get them at:
// http://code.google.com/p/tesseract-ocr/downloads/list
public static final String lang = "eng";
private static final String TAG = "SimpleAndroidOCR.java";
protected Button _button;
// protected ImageView _image;
protected EditText _field;
protected String _path;
protected boolean _taken;
protected static final String PHOTO_TAKEN = "photo_taken";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.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");
}
}
}
// lang.traineddata file with the app (in assets folder)
// You can get them at:
// http://code.google.com/p/tesseract-ocr/downloads/list
// This area needs work and optimization
if (!(new File(DATA_PATH + "tessdata/" + lang + ".traineddata")).exists()) {
try {
AssetManager assetManager = getAssets();
InputStream in = assetManager.open("tessdata/eng.traineddata");
//GZIPInputStream gin = new GZIPInputStream(in);
OutputStream out = new FileOutputStream(DATA_PATH
+ "tessdata/eng.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";
}
public class ButtonClickHandler implements View.OnClickListener {
public void onClick(View view) {
Log.v(TAG, "Starting Camera app");
startCameraActivity();
}
}
// Simple android photo capture:
// http://labs.makemachine.net/2010/03/simple-android-photo-capture/
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(SimpleAndroidOCRActivity.PHOTO_TAKEN, _taken);
}
#Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
Log.i(TAG, "onRestoreInstanceState()");
if (savedInstanceState.getBoolean(SimpleAndroidOCRActivity.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.
}
// www.Gaut.am was here
// Thanks for reading!
}
Related
i am trying to use "tesseract" for android
i am using following libraries
compile 'org.bytedeco.javacpp-presets:tesseract:3.04.01-1.3'
compile 'org.bytedeco:javacpp:1.3.2'
i have the train data in assets.
my source code if the main activity is following:
package mr.t.mister.mr;
import android.app.Activity;
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.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import org.bytedeco.javacpp.lept.PIX;
import org.bytedeco.javacpp.tesseract.TessBaseAPI;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import static org.bytedeco.javacpp.lept.pixRead;
//import com.googlecode.tesseract.android.TessBaseAPI;
public class SimpleAndroidOCRActivity extends Activity {
public static final String PACKAGE_NAME = "com.datumdroid.android.ocr.simple";
public static final String DATA_PATH = Environment
.getExternalStorageDirectory().toString() + "/SimpleAndroidOCR/";
// You should have the trained data file in assets folder
// You can get them at:
// https://github.com/tesseract-ocr/tessdata
public static final String lang = "eng";
private static final String TAG = "SimpleAndroidOCR.java";
protected Button _button;
// protected ImageView _image;
protected EditText _field;
protected String _path;
protected boolean _taken;
protected static final String PHOTO_TAKEN = "photo_taken";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.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");
}
}
}
// lang.traineddata file with the app (in assets folder)
// You can get them at:
// http://code.google.com/p/tesseract-ocr/downloads/list
// This area needs work and optimization
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";
}
public class ButtonClickHandler implements View.OnClickListener {
public void onClick(View view) {
Log.v(TAG, "Starting Camera app");
startCameraActivity();
}
}
// Simple android photo capture:
// http://labs.makemachine.net/2010/03/simple-android-photo-capture/
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(SimpleAndroidOCRActivity.PHOTO_TAKEN, _taken);
}
#Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
Log.i(TAG, "onRestoreInstanceState()");
if (savedInstanceState.getBoolean(SimpleAndroidOCRActivity.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()
baseApi.Init(DATA_PATH, lang);
PIX image = pixRead(_path);
//PIX image = pixRead(args.length > 0 ? args[0] : "/usr/src/tesseract/testing/phototest.tif");
baseApi.SetImage(image);
String recognizedText = baseApi.GetUTF8Text().getString(); //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.
}
// www.Gaut.am was here
// Thanks for reading!
}
when i try to start tesseract, App crashes. i get following things:
05-09 20:18:09.187 26906-26906/mr.t.mister.mr E/AndroidRuntime: FATAL EXCEPTION: main
Process: mr.t.mister.mr, PID: 26906
java.lang.UnsatisfiedLinkError: dalvik.system.PathClassLoader[DexPathList[[zip file "/data/app/mr.t.mister.mr-2/base.apk", zip file "/data/app/mr.t.mister.mr-2/split_lib_dependencies_apk.apk", zip file "/data/app/mr.t.mister.mr-2/split_lib_slice_0_apk.apk", zip file "/data/app/mr.t.mister.mr-2/split_lib_slice_1_apk.apk", zip file "/data/app/mr.t.mister.mr-2/split_lib_slice_2_apk.apk", zip file "/data/app/mr.t.mister.mr-2/split_lib_slice_3_apk.apk", zip file "/data/app/mr.t.mister.mr-2/split_lib_slice_4_apk.apk", zip file "/data/app/mr.t.mister.mr-2/split_lib_slice_5_apk.apk", zip file "/data/app/mr.t.mister.mr-2/split_lib_slice_6_apk.apk", zip file "/data/app/mr.t.mister.mr-2/split_lib_slice_7_apk.apk", zip file "/data/app/mr.t.mister.mr-2/split_lib_slice_8_apk.apk", zip file "/data/app/mr.t.mister.mr-2/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]] couldn't find "libjnilept.so"
at java.lang.Runtime.loadLibrary(Runtime.java:366)
at java.lang.System.loadLibrary(System.java:988)
at org.bytedeco.javacpp.Loader.loadLibrary(Loader.java:963)
at org.bytedeco.javacpp.Loader.load(Loader.java:764)
at org.bytedeco.javacpp.Loader.load(Loader.java:671)
at org.bytedeco.javacpp.lept.<clinit>(lept.java:10)
at java.lang.Class.classForName(Native Method)
at java.lang.Class.forName(Class.java:309)
at org.bytedeco.javacpp.Loader.load(Loader.java:726)
at org.bytedeco.javacpp.Loader.load(Loader.java:671)
at org.bytedeco.javacpp.tesseract$TessBaseAPI.<clinit>(tesseract.java:3648)
at mr.t.mister.mr.SimpleAndroidOCRActivity.onPhotoTaken(SimpleAndroidOCRActivity.java:214)
at mr.t.mister.mr.SimpleAndroidOCRActivity.onActivityResult(SimpleAndroidOCRActivity.java:138)
at android.app.Activity.dispatchActivityResult(Activity.java:6192)
at android.app.ActivityThread.deliverResults(ActivityThread.java:3570)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:3617)
at android.app.ActivityThread.access$1300(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1352)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Caused by: java.lang.UnsatisfiedLinkError: dalvik.system.PathClassLoader[DexPathList[[zip file "/data/app/mr.t.mister.mr-2/base.apk", zip file "/data/app/mr.t.mister.mr-2/split_lib_dependencies_apk.apk", zip file "/data/app/mr.t.mister.mr-2/split_lib_slice_0_apk.apk", zip file "/data/app/mr.t.mister.mr-2/split_lib_slice_1_apk.apk", zip file "/data/app/mr.t.mister.mr-2/split_lib_slice_2_apk.apk", zip file "/data/app/mr.t.mister.mr-2/split_lib_slice_3_apk.apk", zip file "/data/app/mr.t.mister.mr-2/split_lib_slice_4_apk.apk", zip file "/data/app/mr.t.mister.mr-2/split_lib_slice_5_apk.apk", zip file "/data/app/mr.t.mister.mr-2/split_lib_slice_6_apk.apk", zip file "/data/app/mr.t.mister.mr-2/split_lib_slice_7_apk.apk", zip file "/data/app/mr.t.mister.mr-2/split_lib_slice_8_apk.apk", zip file "/data/app/mr.t.mister.mr-2/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]] couldn't find "liblept.so"
at java.lang.Runtime.loadLibrary(Runtime.java:366)
at java.lang.System.loadLibrary(System.java:988)
at org.bytedeco.javacpp.Loader.loadLibrary(Loader.java:963)
at org.bytedeco.javacpp.Loader.load(Loader.java:752)
at org.bytedeco.javacpp.Loader.load(Loader.java:671)
at org.bytedeco.javacpp.lept.<clinit>(lept.java:10)
at java.lang.Class.classForName(Native Method)
at java.lang.Class.forName(Class.java:309)
at org.bytedeco.javacpp.Loader.load(Loader.java:726)
at org.bytedeco.javacpp.Loader.load(Loader.java:671)
at org.bytedeco.javacpp.tesseract$TessBaseAPI.<clinit>(tesseract.java:3648)
at mr.t.mister.mr.SimpleAndroidOCRActivity.onPhotoTaken(SimpleAndroidOCRActivity.java:214)
at mr.t.mister.mr.SimpleAndroidOCRActivity.onActivityResult(SimpleAndroidOCRActivity.java:138)
at android.app.Activity.dispatchActivityResult(Activity.java:6192)
at android.app.ActivityThread.deliverResults(ActivityThread.java:3570)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:3617)
at android.app.ActivityThread.access$1300(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1352)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
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:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
05-09 20:18:09.282 26906-26919/mr.t.mister.mr I/art: Background partial concurrent mark sweep GC freed 798(72KB) AllocSpace objects, 2(91KB) LOS objects, 41% free, 1438KB/2MB, paused 14.815ms total 39.575ms
Unsatisfied link error is produced when Android is not able to obtain a .so library.
Make sure that all your .so are under in their corresponding folder. One or several of the followings -> https://developer.android.com/ndk/guides/abis.html?hl=es
src
---main
------java
---------jnilibs
------------armeabi
------------arm64-v8a
------------...
It is possible you experiment the problem also if your device's processor does not match one of the abi you defined.
You can force your app to use a defined set of abis modifying build.gradle
defaultConfig {
....
ndk.abiFilters 'armeabi', 'arm64-v8a'
}
I was having same issue. When I included all the dependencies as below using *, it vanished.
import org.bytedeco.javacpp.*;
import org.bytedeco.leptonica.*;
import org.bytedeco.tesseract.*;
import static org.bytedeco.leptonica.global.lept.*;
import static org.bytedeco.tesseract.global.tesseract.*;
I am developing app that is text detection using ocr.
I get the source code from https://github.com/GautamGupta/Simple-Android-OCR. When i am using latest android studio. I didn't get the import file of TessBaseAPI. I try add tess-two to project modules. But it is not working. How it possible to run, the below shows the source where i wrote.
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.
}
}
In this code TessBaseAPI is not importing. How it solve?
Instead of trying to build that project yourself, follow the instructions on the project website to use the pre-built version by adding
compile 'com.rmtheis:tess-two:6.0.4'
to your app's build.gradle file.
I've followed these links: http://gaut.am/making-an-ocr-android-app-using-tesseract/#comment-184181
http://gaut.am/making-an-ocr-android-app-using-tesseract/
to make an OCR app on android studio. The app works perfectly fine when i include eng.traineddata in the src->main->assets folder
However, when i used ara.traineddata to make an OCR app for arabic, the app gets stuck
I used the debug point to check where the problem might be and it seems that the problem is at
baseApi.init(DATA_PATH, lang);
in MainActivity.java
Here is my MainActivity.java
package com.innam.tryingtomaketesseractwork;
import android.app.Activity;
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.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import com.googlecode.tesseract.android.TessBaseAPI;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
public class MainActivity extends Activity {
public static final String PACKAGE_NAME = "com.datumdroid.android.ocr.simple";
public static final String DATA_PATH = Environment
.getExternalStorageDirectory().toString() + "/SimpleAndroidOCR/";
// You should have the trained data file in assets folder
// You can get them at:
// http://code.google.com/p/tesseract-ocr/downloads/list
public static final String lang = "ara";
private static final String TAG = "SimpleAndroidOCR.java";
protected Button _button;
// protected ImageView _image;
protected EditText _field;
protected String _path;
protected boolean _taken;
protected static final String PHOTO_TAKEN = "photo_taken";
#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");
}
}
}
// lang.traineddata file with the app (in assets folder)
// You can get them at:
// http://code.google.com/p/tesseract-ocr/downloads/list
// This area needs work and optimization
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";
}
public class ButtonClickHandler implements View.OnClickListener {
public void onClick(View view) {
Log.v(TAG, "Starting Camera app");
startCameraActivity();
}
}
// Simple android photo capture:
// http://labs.makemachine.net/2010/03/simple-android-photo-capture/
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.
}
// www.Gaut.am was here
// Thanks for reading!
}
logcat:
08-04 12:58:38.900 24836-24836/com.innam.tryingtomaketesseractwork D/libEGL: loaded /system/lib/egl/libEGL_mali.so
08-04 12:58:38.905 24836-24836/com.innam.tryingtomaketesseractwork D/libEGL: loaded /system/lib/egl/libGLESv1_CM_mali.so
08-04 12:58:38.905 24836-24836/com.innam.tryingtomaketesseractwork D/libEGL: loaded /system/lib/egl/libGLESv2_mali.so
[ 08-04 12:58:38.910 24836:24836 D/ ]
Device driver API match
Device driver API version: 10
User space API version: 10
[ 08-04 12:58:38.910 24836:24836 D/ ]
mali: REVISION=Linux-r2p4-02rel0 BUILD_DATE=Tue Oct 16 15:37:13 KST 2012
08-04 12:58:38.960 24836-24836/com.innam.tryingtomaketesseractwork D/OpenGLRenderer: Enabling debug mode 0
08-04 12:58:38.965 24836-24836/com.innam.tryingtomaketesseractwork E/SensorManager: thread start
08-04 12:58:38.965 24836-24836/com.innam.tryingtomaketesseractwork D/SensorManager: registerListener :: handle = 1 name= LIS3DH Acceleration Sensor delay= 200000
Any help will be highly appreciated
You'd need all the ara.cube.* files also.
https://github.com/tesseract-ocr/tessdata
Can someone explain what exactly is going on and how I can rectify it. So I understand tesseract has to have an image to target and presumably this would be the bitmap I've captured and tried to save. That saved location would be my _path variable. Now what is the DATA_PATH for tesseract? Does the image need to be stored in a folder called 'tesseract' ? Do I create that folder and store some kind of training in it? I'm looking for an explanation rather than a code example.
http://gaut.am/making-an-ocr-android-app-using-tesseract/ - I am trying to follow this tutorial and checking others to try and understand the paths which all of them use.
public class MainActivity extends Activity {
private static ImageView imageView;
protected String _path;
// protected static Bitmap bit;
static File myDir;
protected static Bitmap mImageBitmap;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
this.imageView = (ImageView) this.findViewById(R.id.imageView1);
Button photoButton = (Button) this.findViewById(R.id.button1);
_path = Environment.getExternalStorageDirectory() + "/images/test.bmp";
Toast t = Toast.makeText(getApplicationContext(), "HEELLLLLLOO", 100000);
t.show();
photoButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// CALL THE PICTURE
dispatchTakePictureIntent(0);
}
});
}
private void handleSmallCameraPhoto(Intent intent) {
Bundle extras = intent.getExtras();
mImageBitmap = (Bitmap) extras.get("data");
imageView.setImageBitmap(mImageBitmap);
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 4;
Bitmap bitmap = BitmapFactory.decodeFile( _path, options );
imageView.setImageBitmap(bitmap);
//_path = path to the image to be OCRed
ExifInterface exif;
try {
exif = new ExifInterface(_path);
int exifOrientation = exif.getAttributeInt(
ExifInterface.TAG_ORIENTATION,
ExifInterface.ORIENTATION_NORMAL);
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;
}
if (rotate != 0) {
int w = bitmap.getWidth();
int h = bitmap.getHeight();
// Setting pre rotate
Matrix mtx = new Matrix();
mtx.preRotate(rotate);
// Rotating Bitmap & convert to ARGB_8888, required by tess
bitmap = Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, false);
bitmap = bitmap.copy(Bitmap.Config.ARGB_8888, true);
}
TessBaseAPI baseApi = new TessBaseAPI();
// DATA_PATH = Path to the storage
// lang for which the language data exists, usually "eng"
baseApi.init(_path, "eng"); //THIS SHOULD BE DATA_PATH ?
baseApi.setImage(bitmap);
String recognizedText = baseApi.getUTF8Text();
System.out.println(recognizedText);
baseApi.end();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
protected void onActivityResult(int requestCode, int resultCode, Intent data){
handleSmallCameraPhoto(data);
}
private void dispatchTakePictureIntent(int actionCode) {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(takePictureIntent, actionCode);
}
protected static void identifyunicode() {
// DATA_PATH = Path to the storage
// lang for which the language data exists, usually "eng"
/*
* TessBaseAPI baseApi = new TessBaseAPI();
* baseApi.init(myDir.toString(), "eng"); // myDir + //
* "/tessdata/eng.traineddata" // must be present baseApi.setImage(bit);
* String recognizedText = baseApi.getUTF8Text(); // Log or otherwise //
* display this // string... baseApi.end();
*/
}
}
DataPath is the path where you copied your tessdata files from Assets.
import java.io.File;
import java.util.ArrayList;
import android.os.Environment;
public class Utils {
public static boolean isSDCardMounted() {
boolean isMounted = false;
String state = Environment.getExternalStorageState();
if (Environment.MEDIA_MOUNTED.equals(state)) {
isMounted = true;
} else if (Environment.MEDIA_BAD_REMOVAL.equals(state)) {
isMounted = false;
} else if (Environment.MEDIA_CHECKING.equals(state)) {
isMounted = false;
} else if (Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) {
isMounted = false;
} else if (Environment.MEDIA_NOFS.equals(state)) {
isMounted = false;
} else if (Environment.MEDIA_REMOVED.equals(state)) {
isMounted = false;
} else if (Environment.MEDIA_UNMOUNTABLE.equals(state)) {
isMounted = false;
} else if (Environment.MEDIA_UNMOUNTED.equals(state)) {
isMounted = false;
}
return isMounted;
}
public static boolean isDirectoryExists(final String filePath) {
boolean isDirectoryExists = false;
File mFilePath = new File(filePath);
if(mFilePath.exists()) {
isDirectoryExists = true;
} else {
isDirectoryExists = mFilePath.mkdirs();
}
return isDirectoryExists;
}
public static boolean deleteFile(final String filePath) {
boolean isFileExists = false;
File mFilePath = new File(filePath);
if(mFilePath.exists()) {
mFilePath.delete();
isFileExists = true;
}
return isFileExists;
}
public static String getDataPath() {
String returnedPath = "";
final String mDirName = "tesseract";
final String mDataDirName = "tessdata";
if(isSDCardMounted()) {
final String mSDCardPath = Environment.getExternalStorageDirectory() + File.separator + mDirName;
if(isDirectoryExists(mSDCardPath)) {
final String mSDCardDataPath = Environment.getExternalStorageDirectory() + File.separator + mDirName +
File.separator + mDataDirName;
isDirectoryExists(mSDCardDataPath);
return mSDCardPath;
}
}
return returnedPath;
}
}
Activity Class
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import android.app.Activity;
import android.content.Intent;
import android.content.res.AssetManager;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.ColorMatrix;
import android.graphics.ColorMatrixColorFilter;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.media.ExifInterface;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.View;
import android.widget.TextView;
import com.googlecode.tesseract.android.TessBaseAPI;
public class AndroidCommonTest extends Activity {
private static final String TAG = AndroidCommonTest.class.getSimpleName();
private TextView txtGotTime = null;
private final int START_CODE = 101;
private String mDirPath = null;
private Uri mOutPutUri = null;
private static final String lang = "eng";
private String mPath = null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
txtGotTime = (TextView) findViewById(R.id.txtGotTime);
mDirPath = Utils.getDataPath();
mPath = mDirPath + File.separator + "test.jpg";
android.util.Log.i(TAG, "mDirPath: " + mDirPath + " mPath: " + mPath);
if (!(new File(mDirPath + File.separator + "tessdata" + File.separator + lang + ".traineddata")).exists()) {
try {
AssetManager assetManager = getAssets();
InputStream in = assetManager.open("tessdata" + File.separator + lang + ".traineddata");
OutputStream out = new FileOutputStream(mDirPath + File.separator
+ "tessdata" + File.separator + lang + ".traineddata");
byte[] buf = new byte[8024];
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
in.close();
out.close();
} catch (IOException e) {
android.util.Log.e(TAG, "Was unable to copy " + lang + " traineddata " + e.toString());
}
} else {
processImage(mDirPath + File.separator + "six.jpg", 0);
}
}
public void getTime(View view) {
android.util.Log.i(TAG, "mDirPath: " + mDirPath + " mPath: " + mPath);
if(mDirPath != null && mDirPath.length() > 0) {
mOutPutUri = Uri.fromFile(new File(mPath));
Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, mOutPutUri);
startActivityForResult(intent, START_CODE);
}
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if(requestCode == START_CODE) {
if(resultCode == Activity.RESULT_OK) {
int rotation = -1;
long fileSize = new File(mPath).length();
android.util.Log.i(TAG, "fileSize " + fileSize);
//Suppose Device Supports ExifInterface
ExifInterface exif;
try {
exif = new ExifInterface(mPath);
int exifOrientation = exif.getAttributeInt(
ExifInterface.TAG_ORIENTATION,
ExifInterface.ORIENTATION_NORMAL);
switch (exifOrientation) {
case ExifInterface.ORIENTATION_ROTATE_90 :
rotation = 90;
break;
case ExifInterface.ORIENTATION_ROTATE_180 :
rotation = 180;
break;
case ExifInterface.ORIENTATION_ROTATE_270 :
rotation = 270;
break;
case ExifInterface.ORIENTATION_NORMAL:
case ExifInterface.ORIENTATION_UNDEFINED:
rotation = 0;
break;
}
android.util.Log.i(TAG, "Exif:rotation " + rotation);
if (rotation != -1) {
processImage(mPath, rotation);
} else {
//Device Does Not Support ExifInterface
Cursor mediaCursor = getContentResolver().query(mOutPutUri,
new String[] { MediaStore.Images.ImageColumns.ORIENTATION,
MediaStore.MediaColumns.SIZE },
null, null, null);
if (mediaCursor != null && mediaCursor.getCount() != 0 ) {
while(mediaCursor.moveToNext()){
long size = mediaCursor.getLong(1);
android.util.Log.i(TAG, "Media:size " + size);
if(size == fileSize){
rotation = mediaCursor.getInt(0);
break;
}
}
android.util.Log.i(TAG, "Media:rotation " + rotation);
processImage(mPath, rotation);
} else {
android.util.Log.i(TAG, "Android Problem");
txtGotTime.setText("Android Problem");
}
}
}
catch (IOException exception) {
exception.printStackTrace();
}
} else if(resultCode == Activity.RESULT_CANCELED) {
android.util.Log.i(TAG, "RESULT_CANCELED");
txtGotTime.setText("RESULT_CANCELED");
}
}
}
private void processImage(final String filePath, final int rotation) {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 2;
options.inPurgeable = true;
Bitmap bitmap = BitmapFactory.decodeFile(filePath, options);
if (bitmap != null) {
int width = bitmap.getWidth();
int height = bitmap.getHeight();
Matrix matrix = new Matrix();
matrix.postRotate(rotation);
bitmap = Bitmap.createBitmap(bitmap, 0, 0, width, height, matrix, false);
bitmap = bitmap.copy(Bitmap.Config.ARGB_8888, true);
TessBaseAPI baseApi = new TessBaseAPI();
baseApi.setDebug(true);
baseApi.init(mDirPath, lang);
baseApi.setPageSegMode(100);
baseApi.setPageSegMode(7);
baseApi.setImage(bitmap);
String recognizedText = baseApi.getUTF8Text();
android.util.Log.i(TAG, "recognizedText: 1 " + recognizedText);
baseApi.end();
if(lang.equalsIgnoreCase("eng")) {
recognizedText = recognizedText.replaceAll("[^a-zA-Z0-9]+", " ");
}
android.util.Log.i(TAG, "recognizedText: 2 " + recognizedText.trim());
txtGotTime.setText(recognizedText.trim());
}
}
private void saveImageAndroid(final Bitmap passedBitmap) {
try {
FileOutputStream mFileOutStream = new FileOutputStream(mDirPath + File.separator + "savedAndroid.jpg");
passedBitmap.compress(Bitmap.CompressFormat.JPEG, 100, mFileOutStream);
mFileOutStream.flush();
mFileOutStream.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
Put tessdata folder in Assets.
Do not forget to give reference path of Tess Library.
Thanks.
I've follow this tutorial to learn about ocr in android.
http://gaut.am/making-an-ocr-android-app-using-tesseract/
After successfully run the program on my device, take a photo, it force close. As if it failed to analyze the image.
I already put the trained data on my /asset/testdata/
the trained data is downloaded from :
http://code.google.com/p/tesseract-ocr/downloads/list
My logcat show that I've error on
java.lang.ExceptionInInitializerError
Can you teach me how to fix it?
This is the code:
package com.datumdroid.android.ocr.simple;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.zip.GZIPInputStream;
import android.app.Activity;
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.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import com.googlecode.tesseract.android.TessBaseAPI;
public class SimpleAndroidOCRActivity extends Activity {
public static final String PACKAGE_NAME = "com.datumdroid.android.ocr.simple";
public static final String DATA_PATH = Environment
.getExternalStorageDirectory().toString() + "/SimpleAndroidOCR/";
// You should have the trained data file in assets folder
// You can get them at:
// http://code.google.com/p/tesseract-ocr/downloads/list
public static final String lang = "eng";
private static final String TAG = "SimpleAndroidOCR.java";
protected Button _button;
// protected ImageView _image;
protected EditText _field;
protected String _path;
protected boolean _taken;
protected static final String PHOTO_TAKEN = "photo_taken";
#Override
public void onCreate(Bundle savedInstanceState) {
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");
}
}
}
// lang.traineddata file with the app (in assets folder)
// You can get them at:
// http://code.google.com/p/tesseract-ocr/downloads/list
// This area needs work and optimization
if (!(new File(DATA_PATH + "tessdata/" + lang + ".traineddata"))
.exists()) {
try {
AssetManager assetManager = getAssets();
InputStream in = assetManager.open("tessdata/eng.traineddata");
// GZIPInputStream gin = new GZIPInputStream(in);
OutputStream out = new FileOutputStream(DATA_PATH
+ "tessdata/eng.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());
}
}
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// _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";
}
public class ButtonClickHandler implements View.OnClickListener {
public void onClick(View view) {
Log.v(TAG, "Starting Camera app");
startCameraActivity();
}
}
// Simple android photo capture:
// http://labs.makemachine.net/2010/03/simple-android-photo-capture/
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(SimpleAndroidOCRActivity.PHOTO_TAKEN, _taken);
}
#Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
Log.i(TAG, "onRestoreInstanceState()");
if (savedInstanceState.getBoolean(SimpleAndroidOCRActivity.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);
System.out.println("Bitmap Selesai");
} catch (IOException e) {
Log.e(TAG, "Couldn't correct orientation: " + e.toString());
}
// _image.setImageBitmap( bitmap );
//System.loadLibrary("tess");
System.out.println("Masuk");
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();
System.out.println("Keluar");
// 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.
}
// www.Gaut.am was here
// Thanks for reading!
}
Do you have this in your AndroidManifest.xml?:
<uses-permission android:name="WRITE_EXTERNAL_STORAGE" />
I notice that you're trying to create files/directories during initialization, maybe this will help
Can you try to add System.loadLibrary("tess"); before initializing tesseract-ocr?