Android Camera Preview Image Captured Stretches

Question

I have an application that uses the camera API, not camera2, and it works great. Here is what I am doing (1) You capture a photo with the camera API using the takePicture(null, null, mPictureCallback) method. (2) The byte[] data array is converted into a Bitmap and is put on the screen in the callback

I have set the picture size and the preview size in my camera parameters. I am hoping to have something similar to Snapchat. Where you take a photo and it scales to every screen without distortion or cropping. How is this possible?

It doesn't seem theoretically possible to fit the same image without distortion and cropping to every screen. Take for example the 1440 x 1440 pixels Blackberry Passport and 800 x 480 pixels Galaxy S. — Alex Cohn, Jan 26 '16 at 22:25

score 0 · Answer 1 · edited Jun 15 '21 at 06:29

Possibly you are rotating the matrix of the image before save it. that's why the image it´s stretched, don´t rotate the matrix and just save the correct value of orientation in the ExifInterface. Try to use something like this with your image:

ExifInterface exif=new ExifInterface(pictureFile.toString());

    Log.d("EXIF value", exif.getAttribute(ExifInterface.TAG_ORIENTATION));
    if(exif.getAttribute(ExifInterface.TAG_ORIENTATION).equalsIgnoreCase("6")){
        realImage= rotate(realImage, 90);
    } else if(exif.getAttribute(ExifInterface.TAG_ORIENTATION).equalsIgnoreCase("8")){
        realImage= rotate(realImage, 270);
    } else if(exif.getAttribute(ExifInterface.TAG_ORIENTATION).equalsIgnoreCase("3")){
        realImage= rotate(realImage, 180);
    } else if(exif.getAttribute(ExifInterface.TAG_ORIENTATION).equalsIgnoreCase("0")){
        realImage= rotate(realImage, 45);
    }

Other way it´s that your Byte Array it´s already saved with a wrong Orientation, in that case you must go to your code and check which parameter are you using when you create your ContentBuilder, check your MediaService parameter:`

MediaStore.Images.ImageColumns.ORIENTATION

Finally I had a similar problem but not with the saved image, it was with the camera preview, the problem appear when I didn't reset my camera session, so the buffer have a different size. Check the post, maybe it will help you with the solution or the code to resize the image.

Camera PreviewView is stretched in some Android devices

Android Camera Preview Image Captured Stretches

1 Answers1