Fixing Texture Seams

[Cryrid]

Hey guys, I just thought I'd share a little technique (http://cryrid.com/art/?p=16) I use to help fix texture seams and warping without having to fight the UV map
I hope it helps : )

[ewok]

wow, i didnt seen this before, great fixing workaround!
did you get this all alone ? nice and thanks for sharing ! : )

greets, ewok

[mechis]

I sent you an email, but thought I'd post here too. Thanks very much for the tute... this is something I never would have thought of myself.

Previously, I tried using rendermap the same way you did and always got some weird stretching when doing it. I couldn't figure out why-- is that the bug you talk about in your tute?

Anyway, thanks for this method!!!! It looks VERY promising!
~Mechis

[Cryrid]

Thanks guys, awesome to know it should be helpful ^_^

did you get this all alone ? nice and thanks for sharing ! : )
I don't think I can take full credit. I saw a tutorial for eliminating texture seems in 3DSM (http://www.gamasutra.com/features/20061019/kojesta_01.shtml) that used multiple UV channels to fix a seam, and then bake it back to the original map. The concept seemed like it would be very helpful as I've spent a lot of time fighting seams, so I immediately began thinking of a way to achieve the same effect in XSI.

I remembered a technique Carl Callewaert had taught me for using the Camera Projection and Mix_2Colors to fix errors in matte paintings that result when the camera moves (for this assignment (http://cryrid.com/school/Compositing.mov)), which struck me as an ideal method for seam removal as it would let me paint over the problem areas without having to worry about more unwrapping. All I had to do was figure out how to stop the camera projection from showing up on the other side of the model (clusters solved that one), and how to get it back to the original UV channel.

Previously, I tried using rendermap the same way you did and always got some weird stretching when doing it. I couldn't figure out why-- is that the bug you talk about in your tute?
The first test I did was a simple cube to see if Rendermap would take different UV maps/textures on clusters and properly combine them back to the original map. It worked perfectly, but when I tried the camera projection method the day after Rendermap didn't seem to be doing anything at all. As soon as I would click the button for it to create the image, the progress bar would quickly flash and go away in the blink of an eye. It did create the image in the path I had requested, but the image would just be a blank 0 KB targa file.

[mechis]

fix errors in matte paintings that result when the camera moves (for this assignment (http://cryrid.com/school/Compositing.mov))

That looks pretty cool!
~Mechis

[norvman]

Very very very cool ....

Thanks for the extremely usefull information

This opens up some very interesting possablities
first time I even concidered camera projections like this

Hey give this guy a metal!

[Ewald]

Now this is really something very special.
Thank you for showing this elegant technic.

[Cryrid]

You're welcome : )

I've been messing around with it over the last few days, and so far it really seems to be a time saver, as if I'm painting over the model itself instead of worrying about how it was unwrapped:
http://cryrid.com/images/temp/hair_example.jpg

I plan on redoing the tutorial in a bit, using a better example and explaining the Ultimapper a bit more (including how to go about using this method when you have overlapping UVs or are painting corrections over multiple textures at once).

[David]

Thanks for the tut, very useful!!

[JDex]

Great approach... hopefully it won't get buried under the swell of new tutorials today, many will probably find this useful.

[hobo]

Great approach... hopefully it won't get buried under the swell of new tutorials today, many will probably find this useful.

indeed :) very useful

[MmAaXx]

this is a good tutorial!