Image stretching suggestion?

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johnp
Posts: 79
Joined: December 10th, 2009, 11:52 pm
What is the make/model of your primary camera?: Canon 90D

Image stretching suggestion?

Post by johnp »

I recently looked at the following video that shows selectively stretching portions of an image to
enhance or minimize sections of the image, ie, foreground or sky, etc.
https://www.youtube.com/watch?v=cL_zZq4WzoA

Is there a way in PWP-8 do achieve similar operations? It seems like Warp is a starting point, but
it doesn't seem to be quite malleable enough. If there was a way to move the corner points to
arbitrary points it could do the job.

Say I want to shrink the foreground... If I could move the upper two corners (without warping) lower
in the image, I could then use the bottom warp points shrink the foreground while leaving the
upper portion of the image un-distorted.

Any suggestions?

Thanks!

John P
jsachs
Posts: 4203
Joined: January 22nd, 2009, 11:03 pm

Re: Image stretching suggestion?

Post by jsachs »

I saw the same video and actually played with the image myself.

First I used the Geometry/Distort transformation to compress the bottom and make some extra room at the top.
ss1 v1.jpg
ss1 v1.jpg (38.94 KiB) Viewed 837 times
ss2 v1.jpg
ss2 v1.jpg (33.77 KiB) Viewed 837 times
Then I cropped off the blank area at the bottom leaving a blank area at the top.
ss3.jpg
ss3.jpg (32.64 KiB) Viewed 837 times
and finally I used the Clone tool to fill in the top.
ss4.jpg
ss4.jpg (32.6 KiB) Viewed 837 times
Jonathan Sachs
Digital Light & Color
jsachs
Posts: 4203
Joined: January 22nd, 2009, 11:03 pm

Re: Image stretching suggestion?

Post by jsachs »

A more elegant way to compress the bottom of the image is to use the Displace transformation with a linear gradient mask. You can spread out the compression over a larger or smaller area by adjusting the gradient.

Displace Transformation
Displace Transformation
displace1.jpg (30.18 KiB) Viewed 814 times
Mask
Mask
displace2.jpg (118.88 KiB) Viewed 814 times
Result
Result
displace3.jpg (117.69 KiB) Viewed 814 times
Jonathan Sachs
Digital Light & Color
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