Multiple camera camera mapping?

#1

Does ANYONE, ANYONE knows how to blend multiple camera mappings in 3d studio max 9, in order to achieve camera freedom (full 360 degrees turns, upside-downs etc.)??? Chris Stoski mentioned it once at this thread http://forums.cgsociety.org/archive/index.php/t-387153.html, and THAT IS ALL!!! Internet is empty about these techniques!! Please please SOMEONE!!!

#2

Come on people somebody must know something!

#3

Hey Benz. I dont use 3dsmax… I use c4d BUT i think the same method could be used. Wherever your getting a stretch in the texture or something of that nature and you have to project another camera I would do this…

-Create a new camera - > render out a image.
-bring the image into photoshop paint over to patch up - >save
-create a new texture in 3ds with that image
-select the faces of the objects that need to be patched and apply that texture to it.
-change the texture mapping : camera mapping and select that new camera you made to make the intial render form 3ds to photoshop

So basically ur creating a selection tag of the object to place your new projection. Then go back to your render cam and play through. So you can have mutliple cam projections and apply different renders to different objects and selections and then just have a render cam to preview.

Is that what you meant?

Have a good one, :beer:
Steve

#4

Sdinozzi is correct. The technique is the same in any software. You can watch the process in Gnomon Training DVD: Camera Projection Techniques in Maya. http://www.thegnomonworkshop.com/dvds/dhi01.html

bruce

#5

to blend multiple paintings in geometry, you have to use the composite map, inside a standard material inside the composite you will add camera per pixel maps for each one of the paintings that you want to add, in there you will choose the camera and your mask that will help you blend it with the other painting, unfortunately there’s almost none existing tutorials about it, but it is easy to learn just experiment with it

#6

Uhhh guys, :argh: , that’s all theory, I need some practical examples! I will try to dig out that gnomon DVD but I’m close to give up matte painting! Thanx anyway!

#7

These guys have given you loads of info to help you on your way. It might be theory based, but if there is no video out there for you to copy then you will just have to get what you can and run with it. You will get a far better response if you can actually post up specific problems as you go and try and get advice on them.

#8

Are you comfortable with regular (ie, single) camera projection? Because multiple ones aren’t that different. Establish the camera movement in the software, do your primary projection from a good viewpoint.

Then render it and identify anyplace where texture stretching occurs. At this point my method is to duplicate the shot camera at that frame (where you can see stretching), pull it back slightly, then do a large render and correct the stretching in photoshop. Make a gradient alpha for the new texture so it blends smoothly with the old one and project it through the duplicated camera (make sure it’s layered over the old one properly in the software)

Hopefully that helps, if anyone has any other methods which work better, then share! :slight_smile:

#9

haha - all theory?!

JamesVFX just explained it step-by-step - if that is too complex for you, go back and learn more about simple projection shots -

Good luck,

Matt

#10

Well, Chris Stoski must know. If you really just want to know what buttons to push you should maybe go through his 3 Gnomon DVD’s:

http://thegnomonworkshop.com/dvds/cst01.html

http://thegnomonworkshop.com/dvds/cst02.html

http://thegnomonworkshop.com/dvds/cst03.html

If theory doesn’t help you I’m not sure what else can.
But buying those 3 tutorials would be the best starting point.

Hope that helps.

#11

im a ctually doing this very thing with 5 different cameras for a shot… i ended up using the composite map, like jaime said worked great. the one thing i did try though was fusions 3d system/ cam projection stuff… seem to work pretty well except our scene scale was soo big that stuff was clipping etc.
so in the end we ended up having one massive painting and breaking it down into the 5 projections. worked out well and looks great

#12

I’m going to have to try this Composite method. I’ve been struggling with figuring out a way to combine multiple camera map per pixel type situations. All i essentially want to do is…for example…stand in the middle of the road, take a picture…walk forward 30 feet or so…take another picture and so on. I can camera match the still photos with our survey data but had a hard time projecting the pics onto the matched geometry so that i could view it from different angles.

Definetly going to have to try this out. Thanks boys!

#13

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