look into convert "man convert"
I use it for bash converting images and creating thumbnails....if the camera put the orientation data in the jpg, then you could look at that and decide whether or not to rotate it.

I found GUI image browsers to be too slow to get anything done, and in most cases, modifying the image destroys it...at least with the ones I've tried. Always make a backup before mass-modifications.

On 5/16/07, Alex Feldman wrote:

This isn't really a Gimp question, I don't think, but I hope it's appropriate here.

I just bought a point-and-shoot, and unlike my dSLR, it doesn't have gravity switch to keep track of the orientation of the photo. My old workflow was to run all the pictures through jhead after they came out of the camera and that lined everything up. Now I have to look at each picture individually and decide to rotate it or not.

Gthumb almost gives me a nice way to do this, presenting me with a page of thumbnails that I can select from, and then rotate the selected ones all at once. Trouble is, you then have to go through and individually save each image to get it to "take". Does anyone know of a tool that that will make this as painless as possible?

Thanks.

-- --alex

http://alexfeldman.org

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Alex Feldman wrote:

This isn't really a Gimp question, I don't think, but I hope it's appropriate here.

Gthumb almost gives me a nice way to do this, presenting me with a page of thumbnails that I can select from, and then rotate the selected ones all at once. Trouble is, you then have to go through and individually save each image to get it to "take". Does anyone know of a tool that that will make this as painless as possible?

I'm fairly sure that gthumb also offers an automatic mode. I have a Panasonic Lumix p&s which sets orientation in the EXIF tags.

Open gthumb in folder view. Select every unprocessed photo that *might* need altering, click Rotate, ensure that the "Adjust Photo Orientation" and "Apply to all images" and hit OK. Those that should be portrait will be rotated and saved.

If you repeat the process, the rotations will be repeated so beware.

Cheers, Toby Haynes

Alex Feldman writes:

Gthumb almost gives me a nice way to do this, presenting me with a page of thumbnails that I can select from, and then rotate the selected ones all at once. Trouble is, you then have to go through and individually save each image to get it to "take". Does anyone know of a tool that that will make this as painless as possible?

jpegtran is what you want. It can rotate jpegs losslessly: just tell it how much (90, 180, 270).

...Akkana

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