Hello.
I would like to know if somebody knows this technique with motion capture
applying in 2D characters.
I do not understand how they obtain the result 2D in Mocap System.
http://www.youtube.com/watch?v=b8arz0tZpgI
Mocap in 2 Dimensional
Moderators: Víctor Paredes, Belgarath, slowtiger
Everything we see on the screen is 2D... even 3D is 2D. 
So whatever is used to display the motion data is 2D. If you rotate the orientation of the 3D DATA it looks different. Only the data itself contains any 3D information. That information is then "projected" onto the 2D screen.
The motion data could be linked to "2D" animation software from a specific angle to control "2D" puppets. Or it could be used to rotoscope the data points to points on the puppet by hand.
Many 3D programs have rendering options for a "2D" cell style. The software is "3D" but the out put doesn't have "realistic" shading... it is out put to look like hand painted or drawn cells.
There are plugins for 3D packages that out put to Flash which is 2D. The resulting Flash files have no 3D data... they could just as well have been drawn by hand by an artist... it is just a sequence of images. Although you could theoretically EXTRACT 3d information from the resulting 2d images... the 3d information is not actually stored as 3d points.
-vern

So whatever is used to display the motion data is 2D. If you rotate the orientation of the 3D DATA it looks different. Only the data itself contains any 3D information. That information is then "projected" onto the 2D screen.
The motion data could be linked to "2D" animation software from a specific angle to control "2D" puppets. Or it could be used to rotoscope the data points to points on the puppet by hand.
Many 3D programs have rendering options for a "2D" cell style. The software is "3D" but the out put doesn't have "realistic" shading... it is out put to look like hand painted or drawn cells.
There are plugins for 3D packages that out put to Flash which is 2D. The resulting Flash files have no 3D data... they could just as well have been drawn by hand by an artist... it is just a sequence of images. Although you could theoretically EXTRACT 3d information from the resulting 2d images... the 3d information is not actually stored as 3d points.
-vern