[magick-users] EXIF rotation flag

[Anthony Thyssen]

"Roger Howard" on  wrote...
| Is there any interest or plan to support image rotation flags set in EXIF
| for JPEG/TIFF so that IM operations respect the flag implicitly and do
| automatic rotation when operating on source files with these flags set?
| 
| Currently I'm pre-checking my images for these flags and then passing
| rotation commands along to IM as necessary, but I can't see a reason this
| shouldn't be directly supported in IM - but if it's not supported I'm sure
| there's a good reason! I'd imagine this has come up before (many times)
| but I couldn't find a search feature for this list's archive and my stabs
| at finding such a thread in Google didn't turn up much of use.
| Best,R
| 
It is supported!!!

Try
   -auto-orient
which rotates the image according to the EXIF flag.  (Added to IM v6.2.7-8)

To rotate back, do it three times which should return it to the former
position, regardless of what this is.

Also of note...
  Rotate ALL images to landscape   -rotate 90\<
                       portrait    -rotate -90\>



WARNING: Loading and saving JPG images causes a slight image data
degrading, unless the specialized  "jpegtrans"  is used to do that
rotation.

Anyone with a simple script fo auto-rotate images basied on
EXIF orientation using "jpegtrans"?

  Anthony Thyssen ( System Programmer )    <A.Thyssen at griffith.edu.au>
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