It could be done with a displacement map fairly easily, or possibly the curve bend tool.

There is a GSoC project that may give a "cage distort" that would make such a thing trivial.

-Rob A.

On 3/28/10, Deniz Dogan wrote:

Recently a friend of mine showed me a picture where someone had taken a photo of a newspaper that laid on a table, slightly folded in the middle as newspapers often are. (See e.g. http://www.brogan.com/blog/wp-content/uploads/2008/02/newspaper.jpg) This particular someone had then inserted a picture of himself, replacing some other picture that was on the front page. It looked pretty realistic, unless one looked closely.

This got us discussing how this someone had put the picture of himself in there. The main problem would be to get the picture to "fold" according to the newspaper. We are both newbies when it comes to this sort of stuff, but my friend who is a computer graphics freak insisted that the person had used a 3D model of a newspaper and then simply "texturized" it with the image of himself.

Personally, I thought (and still believe) that this can easily be done using a GIMP plugin in which one somehow selected the parts where the real image was located on the newspaper and then the plugin would perform some magic (skew etc.) to replace it with the other picture.

Are there any plugins readily available for this sort of stuff? Is it "easy" to write a plugin which does this?

-- Deniz Dogan

Personally, I thought (and still believe) that this can easily be done using a GIMP plugin in which one somehow selected the parts where the real image was located on the newspaper and then the plugin would perform some magic (skew etc.) to replace it with the other picture.

It could be done with a displacement map fairly easily, or possibly the curve bend tool.

Yep.

Like this? http://i41.tinypic.com/2gt1yxh.png

I made this entire thing in about 45 mins from scratch, but if obv. you didn't want to paint a tree, design a newspaper, etc you could probably do it faster. To get the skew, I used the displacement map with a perfectly horizontal black/white gradient layer, then perspective distort, then rotate. For realism you'd have more variations with the gradient layer, and the pixellation would be solved if you had a bigger starting resolution. No 3D model. Hope that helped.

~ X

I found this question to be quite interesting, as I have also tried to do this.
Here is my best effort -- but it's not good enough, and I abandoned it at this
point.
http://www.flickr.com/photos/ettervor/2068285975 I'd also be interested in how to make this look more realistic.

On Sun, Mar 28, 2010 at 4:13 PM, Xiella Harksell wrote:

Personally, I thought (and still believe) that this can easily be done

using a GIMP plugin in which one somehow selected the parts where the real image was located on the newspaper and then the plugin would perform some magic (skew etc.) to replace it with the other picture.

It could be done with a displacement map fairly easily, or possibly the curve bend tool.

Yep.

Like this? http://i41.tinypic.com/2gt1yxh.png

I made this entire thing in about 45 mins from scratch, but if obv. you didn't want to paint a tree, design a newspaper, etc you could probably do it faster. To get the skew, I used the displacement map with a perfectly horizontal black/white gradient layer, then perspective distort, then rotate. For realism you'd have more variations with the gradient layer, and the pixellation would be solved if you had a bigger starting resolution. No 3D model. Hope that helped.

~ X

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