Is this possible?

RT
Posted By
Robert_Talks
Apr 23, 2005
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396
Replies
12
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Closed
I would like to edit a picture of mine, but I am unsure if Photoshop is capable of what I need. I have a picture of a swimming pool with a stoned base. I want to change the type of stones in the picture with a different type of stones that I have in a small jpeg. Is it possible to replace all of the stones in the actual picture with these other ones, or will the picture look fake or stupid?
What makes it more difficult is that the stones are underwater, so if i were to replace the current stones, the new ones would need to be edited so it looked like they were under water.
Also, because I only have a small jpeg, the stones would need to be tiled or something like that, and that is sure to make the picture look silly.
I want it to look as real as possible.
I am sure that this is possible in some way, but is photoshop the correct package for this? I know there are other adobe packages available.
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Gary_Hummell
Apr 23, 2005
If you could post the original image, we could make some suggestions. Photoshop has displacement mapping which can do amazing things with applying images to wavy shapes.

Gary
G
goodidea1950SPAM-SPAM
Apr 24, 2005
wrote in message
:I would like to edit a picture of mine, but I am unsure if Photoshop is capable of what I need. I have a picture of a swimming pool with a stoned base. I want to change the type of stones in the picture with a different type of stones that I have in a small jpeg. Is it possible to replace all of the stones in the actual picture with these other ones, or will the picture look fake or stupid?
: What makes it more difficult is that the stones are underwater, so if i were to replace the current stones, the new ones would need to be edited so it looked like they were under water.
: Also, because I only have a small jpeg, the stones would need to be tiled or something like that, and that is sure to make the picture look silly. : I want it to look as real as possible.
: I am sure that this is possible in some way, but is photoshop the correct package for this? I know there are other adobe packages available.

I would start by making the small jpeg into a bigger
pattern. Line up copies of the pattern next to each
other and vary them so that you get a bigger the better
pattern. Then offset the results on both the right and
up directions. Then make the edges that you get match
and you will have a pattern that fits with itself, ie matches so that you don’t have obvious edges… and your problem will then be to make the water effect which is beyond
my level. It’s pretty easy in a 3D package like Strata
or probably even Bryce. You’ll be able to do it though
if you take the time and it is important enough to
experiment. Good luck and post your results. A
before and after would be nice. : -)
DM
Don_McCahill
Apr 24, 2005
Is this possible? Yes, for a Photoshop expert.

For someone with little or no experience with the program the extent of realism will vary from very phony looking to not bad, depending on how much effort is put into it. (i.e., it is not a push-a-button capability of the program).

Don McCahill
RT
Robert_Talks
Apr 24, 2005
ok.
If you goto <http://public.fotki.com/talksr/swimming_pool_pictu/01.html> (The password is pebbles) There is one of the stone borders that I would like to use.
I don’t have the actual swimming pool picture on this computer, so I have put up an example picture, just so you can understand what I mean. < http://public.fotki.com/talksr/swimming_pool_pictu/example_1 .html> (same password)

In the picture, the pool floor is all blue, I wish to replace the blue floor with my stone boarder. And by floor, I actually mean the sides of the pool too.
In the actual picture I have, the floor is already floored with stones, and I wish to replace the current stones with some from my border stones.

The border stones picture is quite small, so there could be a problem with getting them to look right.
I also agree with you that the mimicking of the underwater look will be quite difficult.

I have done a few things with Photoshop, but I certainly would not call myself an expert. I would like to make the picture look as real as possible, but I am just worried that maybe the size & quality of the border stones picture, maybe not in my favor.

I have not herd of displacement mapping, I will have to look in up on Photoshop and see what I can do with it.
Thanks for your help and advice.
And I am aware that in this case boarders is actually spelt borders, but I seem to have got into this habit of spelling it the wrong way, for that I apologize!.
G
goodidea1950SPAM-SPAM
Apr 24, 2005
wrote in message
: ok.
: If you goto <http://public.fotki.com/talksr/swimming_pool_pictu/01.html> (The password is pebbles) There is one of the stone borders that I would like to use.
: I don’t have the actual swimming pool picture on this computer, so I have put up an example picture, just so you can understand what I mean. < http://public.fotki.com/talksr/swimming_pool_pictu/example_1 .html> (same password)
:
: In the picture, the pool floor is all blue, I wish to replace the blue floor with my stone boarder. And by floor, I actually mean the sides of the pool too.
: In the actual picture I have, the floor is already floored with stones, and I wish to replace the current stones with some from my border stones. :
: The border stones picture is quite small, so there could be a problem with getting them to look right.
: I also agree with you that the mimicking of the underwater look will be quite difficult.
:
: I have done a few things with Photoshop, but I certainly would not call myself an expert. I would like to make the picture look as real as possible, but I am just worried that maybe the size & quality of the border stones picture, maybe not in my favor.
:
: I have not herd of displacement mapping, I will have to look in up on Photoshop and see what I can do with it.
: Thanks for your help and advice.
: And I am aware that in this case boarders is actually spelt borders, but I seem to have got into this habit of spelling it the wrong way, for that I apologize!.

If the graphic that you want to create is that far from the camera then I wonder if the pattern will show up much. You can see the borders of the walls are. Is the picture you plan to use about the same size and the camera about the same distance from the pool?

This is an interesting project. I haven’t worked at all with changing objects under water. The shadows in this pic make the creation of of perspective easier. If you do post the actual pic I’ll try to help if I have time… : -)
LM
Lynch_Mike
Apr 24, 2005
It can be done.
It won’t be easy.
RT
Robert_Talks
Apr 25, 2005
Do you have any suggestions as to where I should start?
PH
Photo_Help
Apr 25, 2005
Robert,

Assuming your real pool is rectangular as well…

First make the stones into a texture and fill a canvas with them.

You can then select and area of the pattern the same dimensions as a wall. Use the transform tools to match the perspective. Do this on all the visible areas (on separate layers).

Select the water surface and duplicate it to a new layer over the new stone walls. Hopefully your example has a blue liner as well, this will make retaining the reflections much easier. Adjust the opacity to see the stones and still be able to see the reflections.

Here <http://www.geocities.com/photohelp2002/Stone_Pool/index.htm> is a quick example. It only took a few seconds. You will want to make a sure your texture tiles and that you randomize it a little so it doesn’t look tiled.
RT
Robert_Talks
Apr 25, 2005
Thank you. This will really help. Your example looks very good. My original picture does not have a blue liner as in the example. It has a stone liner. But I want it to have a different type of stone liner.
Anyway, once I have got my original picture on this computer, I will give it a go. Thanks again for your help.
PH
Photo_Help
Apr 26, 2005
Robert,

Thank you. This will really help.

No problem. I described the process and decided I should probably test it just to make sure the water would look right. Starting with a stone liner will make adding the water more difficult because there will be two patterns present. If you run into trouble you may find yourself manually adding the water and reflections.

Your example looks very good

Thanks. I was happy with the way the water turned out But I was very sloppy with the stones. I didn’t match the scale of the stones on the two walls and the bottom and the pattern from the tiling looks bad. To do it right would probably take about 15 Minutes.
RT
Robert_Talks
Apr 26, 2005
I think, for something that only took you a few minutes, the end result is very pleasing. Once I have my pool picture, I will have a go at this using your incturections, and I will post the end result on this forum.
PH
Photo_Help
Apr 26, 2005
I will post the end result on this forum.

I look forward to seeing the results.

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