バーチャルスタジオ撮影における実演での3次元仮想物体提示のための適応的レジストレーション

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We propose a studio system called an "interactive virtual studio", in which an actor looks directly at virtual objects and manipulates them in a virtual studio. In a conventional virtual studio, such as that often used for recent TV programs, real images of actors are taken by cameras in a studio and superimposed with three dimensional (3D) virtual objects created by computer graphics (CG), so that they are presented to the viewers. However, the actors in the studio cannot see the virtual objects nor manipulate them directly. We introduced augmented reality (AR) to the virtual studio in order to enable them to do this. In our interactive virtual studio, the actors wear wearable displays (WD) so they can see the virtual objects. The actors are thus able to manipulate the virtual objects directly by using a pointer with a three-dimentional sensor on its end. To make this system, it is necessary to maintain a spatial relationship among the different coordinate systems that describe the real space, the virtual space, and the video images presented to the viewer. In the previous work, this geometric registration was made by setting several sample points and collecting errors between the coordinate systems. In contrast, we carry out the geometric registration adaptively with the following process. The actor manipulates virtual objects based on the constraints between three positions: that of the virtual objects, that of the pointer used for manipulating the objects in the virtual space and that of the image presented to the viewers.
2007-07-01

バーチャルスタジオ撮影における実演での3次元仮想物体提示のための適応的レジストレーション

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