3 ms·
The phone is accurately recording the image, as well as the orientation. The bug happens when the EXIF information is stripped. Sure, phone apps could add an o
by not2b 7y ago
The phone is accurately recording the image, as well as the orientation. The bug happens when the EXIF information is stripped. Sure, phone apps could add an option to physically rotate the image, as a bug workaround, but it's not surprising that they don't do this.
- uoaei 7y agoIt is surprising, because it seems like such an obvious fix to the problem of stripped EXIF data. Couldn't be that hard to implement a user setting which tells the app to rotate the file itself before saving. This is a major oversight for the companies who develop camera apps. The major ones even have whole teams dedicated to that single app.
- cookingrobot 7y agoIt would be trivial to rotate a bitmap with no loss of quality, but you can’t rotate an already compressed jpg without changing the image itself, which reduces quality.
- mrob 7y agoAssuming the image size is a multiple of the block size (8x8, 16x8, or 16x16 depending on the chroma subsampling), lossless rotation of JPEGs is possible, e.g. with jpegtran: http://jpegclub.org/jpegtran/ http://jpegclub.org/jpegtran/
- cookingrobot 7y agoReally interesting, good find.