How to use Tesseract library for OCR.

OCR Using Tesseract.txt

1. Download the tesseract library from the following link named libs.zip.
https://www.dropbox.com/s/9fwqz88sck3xlk4/libs.zip?dl=0

2. Extract the zip folder.
* If you are using Eclipse then copy all the files and folders from libs folder to libs folder in your project.
* if you are using Android Studio then Copy all th e folders from libs folder to src/main/jniLibs folder in your project and copy the classes.jar to libs folder.

3. Add image containing text inside your downloads folder and give the name a.png.

4. create folder named tessdata inside the assets folder in your project.

5. download the file named eng.traineddata from the below link and copy it inside the tessdata folder created in the 4th step.
https://www.dropbox.com/s/7xdnfzp8qsy4ll9/eng.traineddata?dl=0

6. add permission to manifest "android.permission.WRITE_EXTERNAL_STORAGE"

7. copy and paste the below code.

try{
	bitmap = BitmapFactory.decodeFile(Environment.getExternalStorageDirectory().getAbsolutePath()+"/download/a.png");
	
	// _path = path to the image to be OCRed
	ExifInterface exif = new ExifInterface(Environment.getExternalStorageDirectory().getAbsolutePath()+"/download/a.png");
	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();
	
	// tesseract reads language from tesseract folder, create it if not exists.
	File f = new File(Environment.getExternalStorageDirectory().getAbsolutePath()+"/tesseract/tessdata");
	if(!f.exists()){
		f.mkdirs();
	}
	
	// copy the eng lang file from assets folder if not exists.
	File f1 = new File(Environment.getExternalStorageDirectory().getAbsolutePath()+"/tesseract/tessdata/eng.traineddata");
	if(!f1.exists()){
		InputStream in = getAssets().open("tessdata/eng.traineddata");
		FileOutputStream fout = new FileOutputStream(f1);
        byte[] buf = new byte[1024];
        int len;
        while ((len = in.read(buf)) > 0) {
        	fout.write(buf, 0, len);
        }
        in.close();
        fout.close();
	}
	
	// DATA_PATH = Path to the storage and data path must contain tessdata subdirectory
	// lang = for which the language data exists, usually "eng"
	// Eg. baseApi.init("/mnt/sdcard/tesseract/tessdata/eng.traineddata", "eng");
	baseApi.init(Environment.getExternalStorageDirectory().getAbsolutePath()+"/tesseract", "eng");
	
	baseApi.setImage(bitmap);
	String recognizedText = baseApi.getUTF8Text();
	baseApi.end();
	Toast.makeText(getApplicationContext(), recognizedText, Toast.LENGTH_LONG).show();
	System.out.println("Text is>>>>>>>>>>>>>>>>>" + recognizedText);
}catch(Exception e){
	e.printStackTrace();
}

Got so much easy way to use OCR...thanx buddy..