With Bricks'n'Tiles you can create perfectly seamless brick textures in photorealistic quality in a couple of minutes. Just select a few bricks from any source images such as photos taken with a digital camera. Bricks'n'Tiles automatically arranges the bricks and slightly alters the brick colors by random to create any possible brick pattern.
OK to start with go to the website download the free version so you can try it out. Remember as long as you make no money off the Program, you can use these as long as you want. But if you find you like the program, and before you go public and charge for any of the games, film, and so on, make sure you give these guys their Duckets and I am sure you will find it is well worth the 45.00 dollars that they are asking for.
Ok lets open BNT up to the default with no textures selected.

Look over the interface now and click on the different buttons and tabs to get to know it just a bit before we go on. For now this will be a very simple Tutorial, mainly as I am still getting to know the software as well. For now I will show you how to set up a very safe texture setting that should make your texture seamless and look well besides. We all know it is not just making them seamless, but making them so you can't tell of the repetitions in the texture that can make some pretty nasty anomalies in your landscapes from different views. Having said that, lets see how good this software really is.
first off we want to bring in the Photo we intend to turn into a seamless texture. That is done in 2 places. The first place is the brick file which is found in both the left side bar and under the Preview window as well.

Click on Brick files and then click on the (Add files button) and then select a file to make seamless. Select the file you want and hit OK twice to get back to main GUI.
Now click on the (Mortar File Button)as we are going to do the same thing again. first check the 2 boxes under the Main window that says Horizontally seamless and Vertically seamless. The select the same file you had before, unless you want to actually have mortar in the texture. But that is another Tut for later, not this one.

Click OK and now we have the Texture we want in both places we plan to use in this Tutorial. Now we want set up the rest of the boxes so, the next step is to select the General Tab, and set the Brick Pattern to Random, or None, I am choosing None on this TUT.
Next we are going to Select the Brick size Tab. Set the sizes to 1024x1024 the same size at the Main Texture size we are using as default. Side not, you can use any Size Texture/photo and it will automatically resize it to 1024x1024 as a default. Pretty cool really I thought. And it squished it very well I thought.
Next is the Brick Shape Tab. This one for now we will Zero out the % to Zero distance, Rounded, and Smoothness out for this Tutorial.

Now we want to go back to the Brick File Tab and make sure that we have selected and checked both of the Horizontal and vertical Flip checked, then we are ready to update our picture and hit the update button in the Image below.

Depending on your photograph you should get something that is 1024x1024 and looks something like this.

This is after it has been tiled and ready to be exported out. Next is to export it out so go to the File, button and Export Image, and save it to where you want it.
So now you have a tiled Photograph that we have made seamless we hope. This is the Texture at 800x800
So as you can see it could use a tweak here and there maybe. So lets test it to make sure we have something that even comes close to working now. I will go into Photoshop now and save it down to 256x256 and tile it on my desktop to test it fast so we can see how good it did.

So now we see that is works on my desktop and seams to pretty seamless all in all. I am sure with a bit of Tweaking this can be worked on to do just about any way you want it. You can use 2 textures and blend them together and do many kinds of things with this software and is pretty powerful over all.
Below are a few more I have done to show the power using some of the textures on this website.


And another one of SeerBlue's wonderful files with:

As you can see by messing with the different settings you can get different variations on the same Textures. But you need to spin the dials and push them buttons and after you get some Killer stuff, post it back here on the Portal here, we needs them Textures hahahaha......
One final note: I noticed that these 2 tiles at the bottom here work much better TILED then the file I used as a Tut, Go figure hahahaha.
This ends the Tutorial on Seamless tiles with Brick'n'Tiles.
Texture Source Concept design team :
http://Theatomizer.com & http://www.ashundar.com/