Re: [Gimp-user] warp by points

2010-12-26 Thread Ofnuts

On 12/26/2010 04:28 AM, Peter Keller wrote:
 What I'd like to be able to do is something like georeferencing images
 in a GIS.  That is, having a base image I refer to, create a series of
 points on the base and another image of a different scale that
 correspond to the same places, and the new image will be adjusted to
 match.  Is there a way to do this with GIMP?  I have not been able to
 find anything like this so far in looking around.  Maybe I just don't
 know the correct terminology for GIMP.

What you want to do looks a lot like the cage transform tool in the 
current 2.7.

You can google it up. You'll find a quick demo video here: 
http://reynantem.blogspot.com/2010/11/gimp-cage-based-free-transform-tool.html



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Re: [Gimp-user] warp by points

2010-12-26 Thread Elwin Estle
I wonder if the morph plugin in the GAP package could do what you want.

--- On Sat, 12/25/10, Peter Keller keller...@gmail.com wrote:

From: Peter Keller keller...@gmail.com
Subject: [Gimp-user] warp by points
To: gimp-user@lists.XCF.Berkeley.EDU
Date: Saturday, December 25, 2010, 10:28 PM

What I'd like to be able to do is something like georeferencing images 
in a GIS.  That is, having a base image I refer to, create a series of 
points on the base and another image of a different scale that 
correspond to the same places, and the new image will be adjusted to 
match.  Is there a way to do this with GIMP?  I have not been able to 
find anything like this so far in looking around.  Maybe I just don't 
know the correct terminology for GIMP.

Thanks for your help-
Peter
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[Gimp-user] gradient based on manual (lasso) selection

2010-12-26 Thread Eric P
GIMPers,

Is there a way to create a gradient (black-white) based off a closed lasso 
selection?  So the resulting gradient would
start black along the edge of the selection and expand out to white in all 
directions away from the selection.

My end goal is to create a quick mask that I can blur to create a background 
with an exaggerated out of focus look.

Thanks for reading (hope that all made sense)!
Eric
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Re: [Gimp-user] gradient based on manual (lasso) selection

2010-12-26 Thread Ofnuts

On 12/26/2010 07:55 PM, Eric P wrote:
 GIMPers,

 Is there a way to create a gradient (black-white) based off a closed lasso 
 selection?  So the resulting gradient would
 start black along the edge of the selection and expand out to white in all 
 directions away from the selection.

 My end goal is to create a quick mask that I can blur to create a background 
 with an exaggerated out of focus look.

 Thanks for reading (hope that all made sense)!
 Eric

That's one of the uses of the WrapMap filter I wrote:

http://registry.gimp.org/node/24754
http://sourceforge.net/projects/gimp-wrapmap/

Added bonus: you can run WrapMap to create the wrapped gradient in the 
layer mask. And if you use the curves dialog/tool on the mask you can 
change the linear gradient to something else and thus control finely how 
the blur appears.



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