Photo center squeeze

AS
Posted By
alexandru serban
Oct 8, 2006
Views
1712
Replies
12
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Closed
Hello,
Here’s what I’m trying to do.
I need to squeeze a photo a little, along the vertical middle line, so that the final shape would be like a concave lens placed horizontally (instead of square).
Of course there’s no cutting so no information should be is lost. Strange, but I didn’t find anywhere a tutorial about this.

If anybody has a hint about how this can be done, please let me know. Thanks a lot.
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JJ
John Joslin
Oct 8, 2006
What version of Photoshop?
C
chrisjbirchall
Oct 8, 2006
Also, if you’d like to post the image at <http://www.pixentral.com> we might be able to offer more constructive advice.
AS
alexandru serban
Oct 8, 2006
I’m using Photoshop 7. Thanx
AS
alexandru serban
Oct 8, 2006
I posted my photo, the URL is:
www.pixentral.com/show.php?picture=1cE4tIafOypXhd9Bk8xSLbb88 uDGE
C
chrisjbirchall
Oct 8, 2006
Alexandru:

I see a landscape image. Have we got the right one here?

If so, I’m unsure what it is you are trying to achieve. Are you wanting to distort the image by introducing some some of inverse barrel distortion?
AS
alexandru serban
Oct 9, 2006
Yeah, the landscape is the right image. It’s just an example.

OK, so what I want is that the upper and the bottom edges of the image would be squeezed vertically, in the center. So the final shape of the image is like a bi-concave lens (placed horizontally), or in other words these two edges would be arches instead of straight lines like they are now.

Yes, it resembles the pincushion effect (as you said, the inverse of barrel correction); however in all these cases the edge lines of the image would remain unchanged (the original square).

I made an outline of final shape of the photo for refference: <http://romania1.hp.infoseek.co.jp/concave.gif>

Again, what I need is a squeeze, not cut-outs from the photo, in shape of the arches. (It’s such a simple thing, and still I could find no tutorial about this!!)

Thankx.
Y
YrbkMgr
Oct 9, 2006
One way to accomplish this is to use the Pen tool, set your options in the options bar to Path.

Draw a rectangle using click/shift-click to create straight lines. You will have created a rectangular path that is now editable. Next click and select the Add Anchor Point Tool (click and hold the pen tool), and you can add draggable points on the center of each line. Once you place the point, you can drag it to create the arch you’re looking for.

Once you’ve tweaked it, what you do with it is up to you; you can stroke it, rasterize it, create a custom shape out of it, make a mask, etc.

Peace,
Tony
AS
alexandru serban
Oct 9, 2006
Thanks Tony, I’ll give it a try!
C
chrisjbirchall
Oct 9, 2006
I don’t have PS7 and can’t remember exactly what filters it has.

I’m pretty sure it has the "Lens Correction" filter. This gives the result (left) below, which is not quite what you are looking for.

In the latest version, CS2, you could use the Warp feature from the "Transform" options (below right).

Failing that, you could try manually manipulating the image using the "Liquify! filter.

Best of luck with it.

Chris.
AS
alexandru serban
Oct 9, 2006
Hello Chris,
Yes, that’s exactly what I need.
In PS7 I don’t find any liquify or warp filter…
So, if I understand right, I just can’t accomplish this with PS7..? INCREDIBLE!!!!!!!!!
🙁
JJ
John Joslin
Oct 9, 2006
This is with "Liquify" (which Version 7 has got):

<http://imageshack.us>
GD
george_dingwall
Oct 9, 2006
Alexandru,

PS7 does have the Liquify Filter. It’s right there on the Filter menu between the extract filter and the pattern maker.

Ctrl + Shift + X will also start the liquify filter.

Hope this helps.

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