Support EXIF flipping as well

fwenzel / imagetwist

A Firefox add-on rotating images on demand or by reading their EXIF data.

https://addons.mozilla.org/en-US/firefox/addon/imagetwist/

MIT License

2 stars 1 forks source link

Support EXIF flipping as well #6

Open fwenzel opened 11 years ago

fwenzel commented 11 years ago

We currently only do rotation (which is, by far, the most frequent case). EXIF also allows flipping though. In fact, I could imagine that's used by front-facing phone cameras?

Pretty easy for us to support.

fwenzel commented 11 years ago

This was a suggestion inside Issue #5.

fwenzel commented 11 years ago

I actually can't find a real-life example of a file that is mirrored. Anyone know if any phone/camera even does that (creating mirrored files)?

tlhackque commented 11 years ago

Well, there's http://elinux.org/Rpi_Camera_Module -hf and -vf

I'm not up-to-date on the commercial cameras, but I'm surprised if none do this. Lots of people seem to take pictures in a mirror; that's one case. Or consider making a T shirt.

In any case, I have received files that had the flipped orientation tags quite a while ago. Doesn't appear that I still have them.

exiftool can be used to create test cases.