Develop Reference

Camera Source (Google Mobile Vision) returns rotated image on some devices

I have the open sourced code for the Google Mobile Vision - CameraSource and this is the method I call to click a photo : cameraSource.takePicture();
In the open sourced version of CameraSource.java, the method for determining screen orientation is the stock one:
private void setRotation(Camera camera, Camera.Parameters parameters, int cameraId) {
WindowManager windowManager =
(WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE);
int degrees = 0;
int rotation = windowManager.getDefaultDisplay().getRotation();
switch (rotation) {
case Surface.ROTATION_0:
degrees = 0;
break;
case Surface.ROTATION_90:
degrees = 90;
break;
case Surface.ROTATION_180:
degrees = 180;
break;
case Surface.ROTATION_270:
degrees = 270;
break;
default:
Log.e(TAG, "Bad rotation value: " + rotation);
}
CameraInfo cameraInfo = new CameraInfo();
Camera.getCameraInfo(cameraId, cameraInfo);
int angle;
int displayAngle;
if (cameraInfo.facing == CameraInfo.CAMERA_FACING_FRONT) {
angle = (cameraInfo.orientation + degrees) % 360;
displayAngle = (360 - angle) % 360; // compensate for it being mirrored
} else { // back-facing
angle = (cameraInfo.orientation - degrees + 360) % 360;
displayAngle = angle;
}
// This corresponds to the rotation constants in {#link Frame}.
mRotation = angle / 90;
camera.setDisplayOrientation(displayAngle);
parameters.setRotation(angle);
}
Here, the displayAngle and the angle are the same for Samsung, Lenovo and Yuntab H8. But the bitmap returned for backCamera is rotated differently in each of the device. I have to manually rotate the bitmap for each of the devices (Samsung : 90, Lenovo : 0 and Yuntab : 180)
My requirement is that onPictureTaken should return a bitmap which matches the current display orientation. I am looking into this, since a long time but yet have to figure a way to the solution. Here below is my onPicturetaken() (called after taking picture):
#Override
public void onPictureTaken(byte[] bytes) {
try {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 2;
bitmap = BitmapFactory.decodeByteArray(bytes, 0, bytes.length, currentCameraId == 0 ? options : null);
}catch (Exception ex){
ex.printStackTrace();
Log.e("PictureTaken",ex.toString());
}
};

You should rotate the image when it is already saved in the device.
Then you can rotate it to match the position it was when the photo was taken.
Example code (It might need some cleanup and improvement, but it works...):
Method do calculate the rotation an image has:
private static int rotationNeeded(String path) {
try {
File file = new File(path);
if (!file.getName().contains(".jpg")) {
return 0;
}
ExifInterface exif = new ExifInterface(file.getAbsolutePath());
int orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
if (orientation == ExifInterface.ORIENTATION_ROTATE_270) {
return 270;
}
if (orientation == ExifInterface.ORIENTATION_ROTATE_180) {
return 180;
}
if (orientation == ExifInterface.ORIENTATION_ROTATE_90) {
return 90;
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return 0;
}
Apply the rotation needed to the image:
public static void rotateImage(String filePath) {
try {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 2;
Bitmap bitmap = BitmapFactory.decodeFile(filePath, options);
//check image rotation
int rotate = rotationNeeded(filePath);
if (rotate != 0) {
//rotate image if needed
Matrix matrix = new Matrix();
matrix.postRotate(rotate);
Bitmap rotatedImage = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(),
bitmap.getHeight(), matrix, true);
bitmap.recycle();
bitmap = rotatedImage;
//save image
byte[] dataPicture = bao.toByteArray();
FileOutputStream fos = new FileOutputStream(filePath);
fos.write(dataPicture);
fos.flush();
fos.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}

how to set captured image using android in sumsung device is portrait mode

I'm trying below code to set captured image using android in sumsung device is portrait mode, but its set to landscape mode. Below code works fine for other devices excepts for samsung and sony.
Matrix mat = new Matrix();
ExifInterface exif = new ExifInterface(yourimagepath);
String orientstring = exif.getAttribute(ExifInterface.TAG_ORIENTATION);
int orientation = orientstring != null ? Integer.parseInt(orientstring) : ExifInterface.ORIENTATION_NORMAL;
int rotateangle = 0;
if(orientation == ExifInterface.ORIENTATION_ROTATE_90)
rotateangle = 90;
if(orientation == ExifInterface.ORIENTATION_ROTATE_180)
rotateangle = 180;
if(orientation == ExifInterface.ORIENTATION_ROTATE_270)
rotateangle = 270;
mat.setRotate(rotateangle, (float) bmpPic.getWidth() / 2, (float) bmpPic.getHeight() / 2);
File f = new File(yourimagepath);
Bitmap bmpPic = BitmapFactory.decodeStream(new FileInputStream(f), null, null);
Bitmap bmpPic1 = Bitmap.createBitmap(bmpPic, 0, 0, bmpPic.getWidth(), bmpPic.getHeight(), mat, true);
Is there is any other solution for same? Please suggest.

use this in your manifest file in activity tag..
android:screenOrientation="portrait"
It can set portrait mode for all devices.

Use ExifInterface to check the orientation of the image as stored in the device.
int rotate = 0;
try {
File imageFile = new File(uploadFile.getPath());
ExifInterface exif = new ExifInterface(
imageFile.getAbsolutePath());
int orientation = exif.getAttributeInt(
ExifInterface.TAG_ORIENTATION,
ExifInterface.ORIENTATION_NORMAL);
switch (orientation) {
case ExifInterface.ORIENTATION_ROTATE_270:
rotate = 270;
break;
case ExifInterface.ORIENTATION_ROTATE_180:
rotate = 180;
break;
case ExifInterface.ORIENTATION_ROTATE_90:
rotate = 90;
break;
}
} catch (IOException e) {
e.printStackTrace();
}
Then using matrix rotate the bitmap to the actual portrait or landscape as stored in device.
Matrix matrix = new Matrix();
matrix.postRotate(rotate);
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = false;
options.inPreferredConfig = Bitmap.Config.RGB_565;
options.inDither = true;
Bitmap bmp = BitmapFactory.decodeFile(uploadFile.getPath(), options);
Bitmap scaledBitmap = Bitmap.createScaledBitmap(bmp, bmp.getWidth(), bmp.getHeight(), true);
Bitmap rotatedBitmap = Bitmap.createBitmap(scaledBitmap, 0, 0, scaledBitmap.getWidth(), scaledBitmap.getHeight(), matrix, true);
rotatedBitmap is the bitmap with correct orientation.
Hope it helps.

Try this code. I was used it on different phones include samsung and it works perfectly:
public Bitmap rotateImage(Bitmap bitmap) throws IOException {
//Rotate the image to get in correct position
ExifInterface exif = new ExifInterface(mImagePath);
int orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, 1);
Matrix matrix = new Matrix();
if (orientation == 6) {
matrix.postRotate(90);
} else if (orientation == 8) {
matrix.postRotate(270);
} else if (orientation == 3) {
matrix.postRotate(180);
}
Bitmap rotatedImage = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
return rotatedImage;
}
Hope it helps!

Image orientation get changed after selecting

I want to set background image for a view using Intent.ACTION_GET_CONTENT and handled onActivityResult method as...
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK && requestCode == SELECT_PICTURE) {
Uri selectedImageUri = data.getData();
try {
InputStream inputStream =
getContentResolver().openInputStream(selectedImageUri);
Drawable drawable = Drawable.createFromStream(inputStream,
selectedImageUri.toString());
mView.setBackground(drawable);
} catch(FileNotFoundException e) {}
}
}
It works fine for some images from gallary but not for all images. Image orientation get changed after selecting some image.

Try below code:-
try {
File f = new File(imagePath);
ExifInterface exif = new ExifInterface(f.getPath());
int orientation = exif.getAttributeInt(
ExifInterface.TAG_ORIENTATION,
ExifInterface.ORIENTATION_NORMAL);
int angle = 0;
if (orientation == ExifInterface.ORIENTATION_ROTATE_90) {
angle = 90;
} else if (orientation == ExifInterface.ORIENTATION_ROTATE_180) {
angle = 180;
} else if (orientation == ExifInterface.ORIENTATION_ROTATE_270) {
angle = 270;
}
Matrix mat = new Matrix();
mat.postRotate(angle);
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 2;
Bitmap bmp = BitmapFactory.decodeStream(new FileInputStream(f),
null, options);
bitmap = Bitmap.createBitmap(bmp, 0, 0, bmp.getWidth(),
bmp.getHeight(), mat, true);
ByteArrayOutputStream outstudentstreamOutputStream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 100,
outstudentstreamOutputStream);
imageView.setImageBitmap(bitmap);
} catch (IOException e) {
Log.w("TAG", "-- Error in setting image");
} catch (OutOfMemoryError oom) {
Log.w("TAG", "-- OOM Error in setting image");
}

Capturing image from camera, results in blowing up the orientation

I am trying to capture image from the camera, it works fine with landscape mode, when I take the picture in portrait it is rotated. Below is the code I am using:
BitmapFactory.Options bounds = new BitmapFactory.Options();
bounds.inJustDecodeBounds = true;
BitmapFactory.decodeFile(largeImagePath, bounds);
Bitmap bm = BitmapFactory.decodeFile(largeImagePath, opts);
ExifInterface exif = new ExifInterface(largeImagePath);
String orientString = exif.getAttribute(ExifInterface.TAG_ORIENTATION);
System.out.println("Orientation camera:"+orientString);
int orientation = orientString != null ? Integer.parseInt(orientString) : ExifInterface.ORIENTATION_NORMAL;
int rotationAngle = 0;
if (orientation == ExifInterface.ORIENTATION_ROTATE_90){
rotationAngle = 90;
System.out.println("In 90 degrees rotate");
}
if (orientation == ExifInterface.ORIENTATION_ROTATE_180){
rotationAngle = 180;
System.out.println("In 180 degrees rotate");
}
if (orientation == ExifInterface.ORIENTATION_ROTATE_270) {
rotationAngle = 270;
System.out.println("In 270 degrees rotate");
}
Matrix matrix = new Matrix();
System.out.println("Rotation Angle"+rotationAngle);
matrix.setRotate(rotationAngle, (float) thumbnail.getWidth() / 2, (float) thumbnail.getHeight() / 2);
bitmap = Bitmap.createBitmap(bm, 0, 0, bounds.outWidth, bounds.outHeight, matrix, true);
On Debug, the control enters the :
if (orientation == ExifInterface.ORIENTATION_ROTATE_90){
rotationAngle = 90;}
block, however no rotation to set the picture back to correct happens.
This is my XML:
<ImageView
android:id="#+id/imageView1"
android:layout_width="140dp"
android:layout_height="160dp"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="10dp"
android:layout_marginTop="30dp"
android:src="#drawable/btn_upload" />
UPDATE: I am getting the following exception:
02-27 13:51:55.126: I/System.out(16549): Exceptionjava.lang.IllegalArgumentException: x + width must be <= bitmap.width()

you can arrange your code as follow...
Bitmap bm = BitmapFactory.decodeFile(largeImagePath, opts);
ExifInterface ei;
try {
ei = new ExifInterface(largeImagePath);
int orientation = ei.getAttributeInt(ExifInterface.TAG_ORIENTATION,
ExifInterface.ORIENTATION_NORMAL);
switch (orientation) {
case ExifInterface.ORIENTATION_ROTATE_90:
bitmap = rotateImage(bitmap, 90);
break;
case ExifInterface.ORIENTATION_ROTATE_180:
bitmap = rotateImage(bitmap, 180);
break;
case ExifInterface.ORIENTATION_ROTATE_270:
bitmap = rotateImage(bitmap, 270);
break;
}
} catch (IOException e) {
e.printStackTrace();
}
write rotateImage() method as follows....
private Bitmap rotateImage(Bitmap source, float angle) {
Bitmap bitmap = null;
Matrix matrix = new Matrix();
matrix.postRotate(angle);
try {
bitmap = Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(),
matrix, true);
} catch (OutOfMemoryError err) {
err.printStackTrace();
}
return bitmap;
}

Use bm.getWidth() and bm.getHeight() instead bounds.outWidth and bounds.outHeight in createBitmap() method.

Rotating of large image causes OutOfMemoryError

I'm trying to rotate the image taken from camera and save it without scaling down without showing in an view, but when I try to load it like this
Bitmap bmp = BitmapFactory.decodeFile(tmpImageFilePath);
I get OutOfMemoryError. There is no problem for me to rotate image but how to load it and save with original size? I've already googled some techniques in order to solve this problem but none of them fits me.
And when I try this variant:
File f = new File(tmpImageFilePath);
long filesize = f.length();
ExifInterface exif = new ExifInterface(f.getPath());
int orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
int angle = 0;
if (orientation == ExifInterface.ORIENTATION_ROTATE_90) {
angle = 90;
}
else if (orientation == ExifInterface.ORIENTATION_ROTATE_180) {
angle = 180;
}
else if (orientation == ExifInterface.ORIENTATION_ROTATE_270) {
angle = 270;
}
Matrix mat = new Matrix();
mat.postRotate(angle);
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 8;
Bitmap bmp = BitmapFactory.decodeFile(tmpImageFilePath, options);
Bitmap correctBmp = Bitmap.createBitmap(bmp, 0, 0, bmp.getWidth(), bmp.getHeight(), mat, true);
bmp.recycle();
try {
FileOutputStream out = new FileOutputStream(f);
correctBmp.compress(Bitmap.CompressFormat.JPEG, 90, out);
} catch (Exception e) {
e.printStackTrace();
}
I get lesser image.