id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
8189	Support for rotation of images by EXIF tags.	harald@…	harald@…	"My camera doesn't rotate all images correctly, and I believe this to be fairly common.
Result is I end up rotating some images after import to my computer. My preferred way of doing that is by only changing the rotation settings in the images EXIF data. (I use Shotwell for this, but it's a very common way to do it.)
It's very quick, avoids rewriting (and degradation of) the jpeg file, and most importantly it keeps the GPS EXIF tags (no problem).

Downside is, Josm doesn't read or use the EXIF tag for image rotation, making my images look like they weren't rotated at all. I need to use an extra image viewer to see those properly.

The update should be fairly easy. It needs to do something like this:
1. Read image data such as size, rotation and GPS position. (The library for reading gps position can be extended to read rotation from EXIF data.)
2. Calculate size of image to read into memory buffer.
3. Read image into memory.
4. Rotate the image in memory according to EXIF data."	enhancement	closed	normal		Core image mapping	latest	duplicate	rotation EXIF tag