I creating a custom camera application in which after taking the photo I am setting the bitmap in the imageview. I am using the library known as GLIDE. To rotate image in the right direction I am getting the Exif information from Input stream.
Once I take the portrait photo the onPictureTaken returns the byte[]. After checking the byte[] the Exif tag returned is ExifInterface.ORIENTATION_NORMAL which means the rotation of image is normal and it does not need any more rotation. However, the image set by the Glide in the image view is in landscape instead of portrait and it requires rotation of 90 degree .May be there is something in the glide library that rotates the image automatically. Does someone has any idea?
Any help is appreciated. The code is given below:
public void onPictureTaken(byte[] data, Camera camera) {
Glide.with(this)
.load(data)
.asBitmap().override(height, width) // resizes the image to these dimensions (in pixel)
.centerCrop()
.into(new SimpleTarget<Bitmap>() {
#Override
public void onResourceReady(Bitmap bitmap, GlideAnimation glideAnimation) {
try {
InputStream is = new ByteArrayInputStream(data);
Metadata metadata = ImageMetadataReader.readMetadata(is);
final ExifIFD0Directory exifIFD0Directory = metadata.getFirstDirectoryOfType(ExifIFD0Directory.class);
Matrix mtx = new Matrix();
int w = bitmap.getWidth();
int h = bitmap.getHeight();
if (exifIFD0Directory.containsTag(ExifIFD0Directory.TAG_ORIENTATION)) {
final int exifOrientation = exifIFD0Directory.getInt(ExifIFD0Directory.TAG_ORIENTATION); //checking Exif here it returns image is normal
switch (exifOrientation) {
case ExifInterface.ORIENTATION_NORMAL:
break;
case ExifInterface.ORIENTATION_ROTATE_90:
mtx.postRotate(90);
break;
case ExifInterface.ORIENTATION_ROTATE_180:
mtx.postRotate(180);
break;
case ExifInterface.ORIENTATION_ROTATE_270:
mtx.postRotate(270);
break;
}
}
photo = Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, true);
Imageview.setImageBitmap(photo);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
Related
I have tried most of the code on stackoverflow but none of them are working.
I am using moto x4 for uploading picture using camera. when I use back camera it gets rotated 90 degree left and when I use front camera it gets rotated 90 degree right. but in debug mode, in both case I found the orientation = 0;
else if (requestCode == CAMERA) {
Bitmap thumbnail = (Bitmap) data.getExtras().get("data");
String imagePath = saveImage(thumbnail);
File imageFile = new File(imagePath);
ExifInterface exif = null;
try {
exif = new ExifInterface(imageFile.getAbsolutePath());
} catch (IOException e) {
e.printStackTrace();
}
int orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
bmap = GetandSetBitmap.rotateBitmap(thumbnail,orientation);
mImageView.setBackgroundResource(0);
mImageView.setImageBitmap(bmap);
}
This probably has to do with the fact that one camera is by default in landscape and the other in reverse landscape, so orientation = 0, as the orientation is detected to be the normal one in both cases. Unfortunately, I don't have a solution that wouldn't involve manually rotating the image to cover all cases. Personally I've used a switch to cater for the cases where my photo was saved with a 90 degrees rotation:
ExifInterface exifInterface = new ExifInterface(pictureFile.getPath());
int orientation = exifInterface.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_UNDEFINED);
Bitmap correctedBitmap;
switch(orientation) {
case ExifInterface.ORIENTATION_ROTATE_90:
correctedBitmap = bitmap;
capturedImageHolder.setImageBitmap(correctedBitmap);
break;
case ExifInterface.ORIENTATION_ROTATE_180:
correctedBitmap = rotateImage(bitmap, 90);
capturedImageHolder.setImageBitmap(correctedBitmap);
break;
case ExifInterface.ORIENTATION_ROTATE_270:
correctedBitmap = rotateImage(bitmap, 180);
capturedImageHolder.setImageBitmap(correctedBitmap);
break;
case ExifInterface.ORIENTATION_NORMAL:
default:
correctedBitmap = rotateImage(bitmap, 270);
capturedImageHolder.setImageBitmap(correctedBitmap);
break;
}
} catch (IOException e) {
}
public static Bitmap rotateImage(Bitmap source, float angle) {
Matrix matrix = new Matrix();
matrix.postRotate(angle);
return Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(),
matrix, true);
}
In your case, you would need to detect if the photo is taken from the front-facing camera or the back and adjust the values accordingly.
I am trying to adapt Microsoft's projectOxford EmotionApi's image-auto rotater code. Each image taken by the device camera is analyzed for its angle, and then rotated to the correct landscape view to be analyzed by the emotion API.
My question is : how would I adapt the code below to take a Bitmap as an argument? I am also completely lost as to the role of the Content Resolver and ExitInterface in this case. Any help is well appreciated.
private static int getImageRotationAngle(
Uri imageUri, ContentResolver contentResolver) throws IOException {
int angle = 0;
Cursor cursor = contentResolver.query(imageUri,
new String[] { MediaStore.Images.ImageColumns.ORIENTATION }, null, null, null);
if (cursor != null) {
if (cursor.getCount() == 1) {
cursor.moveToFirst();
angle = cursor.getInt(0);
}
cursor.close();
} else {
ExifInterface exif = new ExifInterface(imageUri.getPath());
int orientation = exif.getAttributeInt(
ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
switch (orientation) {
case ExifInterface.ORIENTATION_ROTATE_270:
angle = 270;
break;
case ExifInterface.ORIENTATION_ROTATE_180:
angle = 180;
break;
case ExifInterface.ORIENTATION_ROTATE_90:
angle = 90;
break;
default:
break;
}
}
return angle;
}
// Rotate the original bitmap according to the given orientation angle
private static Bitmap rotateBitmap(Bitmap bitmap, int angle) {
// If the rotate angle is 0, then return the original image, else return the rotated image
if (angle != 0) {
Matrix matrix = new Matrix();
matrix.postRotate(angle);
return Bitmap.createBitmap(
bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
} else {
return bitmap;
}
}
how would I adapt the code below to take a Bitmap as an argument?
You can't.
I am also completely lost as to the role of the Content Resolver and ExitInterface in this case
The code in your question uses the EXIF Orientation tag to determine the orientation that should be applied to the image, as reported by the camera that took the photo (or whatever set that tag). ExifInterface is code to read EXIF tags. ExifInterface needs to work with the actual JPEG data, not a decoded Bitmap — a Bitmap no longer has the EXIF tags.
The ContentResolver code in there is bug-riddled and should not be used. The ExifInterface that comes in the com.android.support:exifinterface library has a constructor that takes an InputStream, from which it will read the JPEG. The correct way to use the Uri here is to pass it to openInputStream() on the ContentResolver, passing that stream to the ExifInterface constructor.
I know applying EXIF orientation on the bitmap object, doing this -
public static Bitmap getCorrectBitmap(Bitmap bitmap, String filePath) {
ExifInterface ei;
Bitmap rotatedBitmap =bitmap;
try {
ei = new ExifInterface(filePath);
int orientation = ei.getAttributeInt(ExifInterface.TAG_ORIENTATION,
ExifInterface.ORIENTATION_NORMAL);
Matrix matrix = new Matrix();
switch (orientation) {
case ExifInterface.ORIENTATION_ROTATE_90:
matrix.postRotate(90);
break;
case ExifInterface.ORIENTATION_ROTATE_180:
matrix.postRotate(180);
break;
case ExifInterface.ORIENTATION_ROTATE_270:
matrix.postRotate(270);
break;
}
rotatedBitmap = Bitmap.createBitmap(bitmap , 0, 0, bitmap .getWidth(), bitmap .getHeight(), matrix, true);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return rotatedBitmap;
}
But, what I am having is - a few rotated images (camera images) uri and their corresponding file paths (of sd card).
It will be great, if someone suggests me a good way to apply similar EXIF orientation on the image uri and getting back the correctly oriented uri.
I do not want to involve bitmap object in this process as getting bitmap of the image consumes time (about 1 second per image).
Hi currently I'm trying to display an image that is rotated by about 5 degrees on an imageview after I capture it and rotate the image into proper orientation (camera issues). Now the problem is after setting the image on an imageview which is rotated 5 degrees sing imageview.setRotation(5) the imageview itself becomes aliased. I'm pretty sure that the imageview is the one being aliased since my image has a padding of 5dp to have a white border on the sides but please do correct me if I'm wrong.
What solution I tried so far is this but the sample solution works for already set image on a custom view and I'm not that used to in configuring or further customizing a custom views to work based on what I need. though his problem is almost the same as mine.
I also tried this one which apply antialiasing on the fly but didn't work as well.
So far here is my code:
imageview = (ImageView) findViewById(R.id.img_preview);
imageview.setRotation(5);
Bundle extras = getIntent().getExtras();
if (extras != null) {
String img_path = extras.getString("img_path");
File image_file = new File(img_path);
try {
Bitmap captured_image = applyOrientation(BitmapFactory.decodeFile(img_path),resolveBitmapOrientation(image_file));
imageview.setImageBitmap(captured_image);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
And this is the code on where I rotate my image maybe someone can help fix it from here too so here it is:
private int resolveBitmapOrientation(File bitmapFile) throws IOException {
ExifInterface exif = null;
exif = new ExifInterface(bitmapFile.getAbsolutePath());
return exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
}
private Bitmap applyOrientation(Bitmap bitmap, int orientation) {
int rotate = 0;
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;
default:
return bitmap;
}
int w = bitmap.getWidth();
int h = bitmap.getHeight();
Matrix mtx = new Matrix();
mtx.postRotate(rotate);
return Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, true);
}
I am making an android app that sends pictures the user explicitly took and send it to a web server. Next, i display those pictures in a web application.
However, the pictures taken from the smartphone in portrait appear in the server rotated as if they were taken in landscape mode and vice versa.
Any idea why this is happening?
There is a property of the image, "exif tag". Which tells about the orientation of the image. You can check the value of this tag before sending the image to server.
you can use below method to get the unrotated image
public final static Bitmap getUnRotatedImage(String imahePath, Bitmap rotattedBitmap)
{
int rotate = 0;
try
{
File imageFile = new File(imahePath);
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 (Exception e)
{
e.printStackTrace();
return null;
}
Matrix matrix = new Matrix();
matrix.postRotate(rotate);
return Bitmap.createBitmap(rotattedBitmap, 0, 0, rotattedBitmap.getWidth(), rotattedBitmap.getHeight(), matrix,
true);
}
It takes two arguments, image path and the bitmap image.
Try this method before sending the images to the server.