[Gqview-users] Offline rotation

[Florian Hollerweger]

Hi list,

One feature which I really like about the 'pho' image viewer
(http://www.shallowsky.com/software/pho/) is that whenever one quits it,
it outputs a list of all rotations one has applied to the images viewed.
I then use this information to let 'jpegtran' rotate my images accordingly.

I was wondering whether there is any comparable way to access the
information that GQview keeps on which images have been rotated (for
display purposes only) using the "[" and "]" keys.

First I thought I'll use the external jpegtran commands which come on
Ctrl+1 and Ctrl+2 with the standard Debian install of GQview, but I find
the response of those a bit too slow, so I'd prefer to use the quicker
"[" "]" rotations and then do the transformations on the actual files
offline in one go.

Any ideas?

best,
flo.H

[Anthony Thyssen]

On Sat, 05 Sep 2009 21:04:45 +0100
Florian Hollerweger <***@qub.ac.uk> wrote:

| Hi list,
|
| One feature which I really like about the 'pho' image viewer
| (http://www.shallowsky.com/software/pho/) is that whenever one quits it,
| it outputs a list of all rotations one has applied to the images viewed.
| I then use this information to let 'jpegtran' rotate my images accordingly.
|
| I was wondering whether there is any comparable way to access the
| information that GQview keeps on which images have been rotated (for
| display purposes only) using the "[" and "]" keys.
|
| First I thought I'll use the external jpegtran commands which come on
| Ctrl+1 and Ctrl+2 with the standard Debian install of GQview, but I find
| the response of those a bit too slow, so I'd prefer to use the quicker
| "[" "]" rotations and then do the transformations on the actual files
| offline in one go.
|
Why bother with a list?

Just use jhead -autorot on all the images. If the orientation flag
identifies the image needs rotation it will be rotated loss-lessly,
thumbnail included.

Of course that does not help for images that are badly rotated without
a valid EXIF orientation flag.


Anthony Thyssen ( System Programmer ) <***@griffith.edu.au>
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