How to store image taken from camera intent and store it in SQlite database?

In my app the user can take an image via the camera intent:

byte[] imageData;
ByteArrayOutputStream baos;

.....

@Override
public void onMapLongClick(LatLng point) {
    thePoint=point;

    drawMarker(point);      
    ContentValues contentValues = new ContentValues();
    contentValues.put(LocationsDB.FIELD_LAT, point.latitude );
    contentValues.put(LocationsDB.FIELD_LNG, point.longitude);
    contentValues.put(LocationsDB.FIELD_ZOOM, googleMap.getCameraPosition().zoom);
    contentValues.put(LocationsDB.FIELD_IMAGE, imageData);
    LocationInsertTask insertTask = new LocationInsertTask();
    insertTask.execute(contentValues);

     Intent imageIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
     timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
     File imagesFolder = new File(Environment.getExternalStorageDirectory(), "Kruger National Park");
     imagesFolder.mkdirs();
     image = new File(imagesFolder.getPath(), "MySighting_" + timeStamp + ".jpg");
     fileUri = Uri.fromFile(image);

     imageIntent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
     startActivityForResult(imageIntent, TAKE_PICTURE);
}

  private void drawMarker(LatLng point) {
    Marker marker = googleMap.addMarker(new MarkerOptions()
    .position(thePoint));
    markerId = marker.getId();

}

Then in onActivityResult

public void onActivityResult(int requestCode, int resultCode, Intent data) {
      if (requestCode == TAKE_PICTURE && resultCode == RESULT_OK) {
              try {
                  GetImageThumbnail getImageThumbnail = new GetImageThumbnail();
                  bitmap = getImageThumbnail.getThumbnail(fileUri, this);
              } catch (FileNotFoundException e1) {
                  e1.printStackTrace();
              } catch (IOException e1) {
                  e1.printStackTrace();
              }
         ExifInterface exif = null;

        try {
            exif = new ExifInterface(image.getAbsolutePath());
        } catch (IOException e) {
            e.printStackTrace();
        }
           int orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, -1);
           if (orientation != -1) {
                   switch (orientation) {
                   case ExifInterface.ORIENTATION_ROTATE_90:
                       rotate = 90;
                       break;
                   case ExifInterface.ORIENTATION_ROTATE_180:
                       rotate = 180;
                       break;
                   case ExifInterface.ORIENTATION_ROTATE_270:
                       rotate = 270;
                       break;
                   default:
                       rotate = 0;
                       break;
                   }
           }
           Matrix matrix = new Matrix();
            matrix.postRotate(rotate);
            bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, false);
          baos = new ByteArrayOutputStream();
          bitmap.compress(CompressFormat.JPEG, 100, baos);
          imageData = baos.toByteArray();
           myMarkersHash.put(markerId, bitmap);
           }
        }

i then converted the bitmap to byte array (as seen in above code)

Then also in the Camera Intent code you'll see that i have added contentValues.put(LocationsDB.FIELD_IMAGE, imageData);

And the in my LocationsDB class i added the column:

public static final String FIELD_IMAGE = "img";

....

@Override
public void onCreate(SQLiteDatabase db) {
    String sql =     "create table " + DATABASE_TABLE + " ( " +
                     FIELD_ROW_ID + " integer primary key autoincrement , " +
                     FIELD_LNG + " double , " +
                     FIELD_LAT + " double , " +
                     FIELD_ZOOM + " text , " +
                     FIELD_IMAGE + " text " +
                     " ) ";

    db.execSQL(sql);
}

public long insert(ContentValues contentValues){
    long rowID = mDB.insert(DATABASE_TABLE, null, contentValues);
    return rowID;
}

public int del(){
    int cnt = mDB.delete(DATABASE_TABLE, null , null);
    return cnt;
}

public Cursor getAllLocations(){
    return mDB.query(DATABASE_TABLE, new String[] { FIELD_ROW_ID,  FIELD_LAT , FIELD_LNG, FIELD_ZOOM, FIELD_IMAGE} , null, null, null, null, null, null);
}

and then in my MainActivity class again i added this to load the image again:

@Override
public void onLoadFinished(Loader<Cursor> arg0, Cursor arg1) {
    int locationCount = 0;
    double lat=0;
    double lng=0;
    float zoom=0;
    float img=0;
    locationCount = arg1.getCount();
    arg1.moveToFirst();

    for(int i=0;i<locationCount;i++){

        lat = arg1.getDouble(arg1.getColumnIndex(LocationsDB.FIELD_LAT));
        lng = arg1.getDouble(arg1.getColumnIndex(LocationsDB.FIELD_LNG));
        zoom = arg1.getFloat(arg1.getColumnIndex(LocationsDB.FIELD_ZOOM));
        img = arg1.getFloat(arg1.getColumnIndex(LocationsDB.FIELD_IMAGE));
        thePoint = new LatLng(lat, lng);
        drawMarker(thePoint);
        arg1.moveToNext();
    }

    if(locationCount>0){
        googleMap.moveCamera(CameraUpdateFactory.newLatLng(new LatLng(lat,lng)));
        googleMap.animateCamera(CameraUpdateFactory.zoomTo(zoom));
        imageData  = baos.toByteArray();
    }

But the problem is when launching the app the crashes at line 336 which is imageData = baos.toByteArray(); with a nullPointerException

What am i doing wrong here?