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Snap to center line?

May 28, 2012, 12:46
Post: #1
Snap to center line?
Hi folks,

I took a series of photos out of which I want to make a time-lapse movie.

There are 2 points in each photo that I need to have snapped to a center line, so that each photo is vertically straight.

Is there a way in GIMP to specify 2 points and have the entire image move so that those two points are along a central line?

Essentially what happened was, each photo that I took was not perfectly vertical, even though I took pains to ensure that each one was.

Thanks.
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May 28, 2012, 16:58
Post: #2
RE: Snap to center line?
If the angle of rotation is the same for each image, you can use BIMP
http://registry.gimp.org/node/26259
This can apply the procedure gimp-rotate (angle in radians) to the selected images.
Windows compiled plugin, but the linux one is easy to make.

Otherwise one at a time by using auto rotate
http://registry.gimp.org/node/22910
A script so nothing special required.
You could open all the images as layers and apply this layer by layer with the same path or one-at-a-time.

I don't use it but does gimp-GAP not have a function for this?

** https://www.gimp-forum.net/ now answering questions**
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May 28, 2012, 17:50
Post: #3
RE: Snap to center line?
(May 28, 2012 12:46)Zar Wrote:  Hi folks,

I took a series of photos out of which I want to make a time-lapse movie.

There are 2 points in each photo that I need to have snapped to a center line, so that each photo is vertically straight.

Is there a way in GIMP to specify 2 points and have the entire image move so that those two points are along a central line?

Essentially what happened was, each photo that I took was not perfectly vertical, even though I took pains to ensure that each one was.

Thanks.
Using a slightly different method with "pure" Gimp:
- start Rotate tool
- Put it in "corrective" mode, with "grid" preview
- Align grid along what should be vertical lines
- Press "rotate" button.

Now answering your questions on
https://Gimp-Forum.net
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