MOTION CAPTURE CALIBRATION USING A THREE-DIMENSIONAL ASSEMBLY
Embodiments facilitate the calibration of cameras in a live action scene. In some embodiments, a system receives images of the live action scene from a plurality of cameras. The system further receives reference point data generated from a performance capture system, where the reference point data is based on a plurality of reference points coupled to a plurality of extensions coupled to a base, where the plurality of reference points are in a non-linear arrangement, where distances between references points are predetermined. The system further computes reference point data generated from a performance capture system and based on the distances. The system further computes a location and orientation of each camera in the live action scene based on the reference point data.
1 . An apparatus for calibrating cameras in a live action scene, the apparatus comprising:
a base;
a plurality of extensions coupled to the base; and
a plurality of reference points coupled to the plurality of extensions, wherein the plurality of reference points are in a non-linear arrangement, wherein distances between references points are predetermined, wherein the distances are used to compute reference point data generated from a performance capture system, and wherein the reference point data is used to compute a location and orientation of each camera in the live action scene.
2 . The apparatus of claim 1 , wherein the plurality of reference points comprises at least three reference points.
3 . The apparatus of claim 1 , wherein the plurality of reference points are configured in a rigid three-dimensional assembly.
4 . The apparatus of claim 1 , wherein the distances between one or more pairs of reference points vary.
5 . The apparatus of claim 1 , wherein the distances between one or more pairs of reference points are different.
6 . The apparatus of claim 1 , wherein the distances between one or more pairs of reference points are changeable.
7 . The apparatus of claim 1 , wherein the apparatus is positioned within the live action scene.
8 . An system for calibrating cameras in a live action scene, the system comprising:
a base;
a plurality of extensions coupled to the base; and
a plurality of reference points coupled to the plurality of extensions, wherein the plurality of reference points are in a non-linear arrangement, wherein distances between references points are predetermined, wherein the distances are used to compute reference point data generated from a performance capture system, and wherein the reference point data is used to compute a location and orientation of each camera in the live action scene.
9 . The system of claim 8 , wherein the plurality of reference points comprises at least three reference points.
10 . The system of claim 8 , wherein the plurality of reference points are configured in a rigid three-dimensional assembly.
11 . The system of claim 8 , wherein the distances between one or more pairs of reference points vary.
12 . The system of claim 8 , wherein the distances between one or more pairs of reference points are different.
13 . The system of claim 8 , wherein the distances between one or more pairs of reference points are changeable.
14 . The system of claim 8 , wherein the apparatus is positioned within the live action scene.
15 . A computer-implemented method for calibrating cameras in a live action scene, the method comprising:
receiving images of the live action scene from a plurality of cameras;
receiving reference point data generated from a performance capture system, wherein the reference point data is based on a plurality of reference points coupled to a plurality of extensions coupled to a base, wherein the plurality of reference points are in a non-linear arrangement, wherein distances between references points are predetermined;
computing reference point data generated from a performance capture system and based on the distances; and
computing a location and orientation of each camera in the live action scene based on the reference point data.
16 . The method of claim 15 , wherein the plurality of reference points are configured in a rigid three-dimensional assembly.
17 . The method of claim 15 , wherein the plurality of reference points comprises at least three reference points.
18 . The method of claim 15 , wherein the distances between one or more pairs of reference points vary.
19 . The method of claim 15 , wherein the distances between one or more pairs of reference points are different.
20 . The method of claim 15 , wherein distances between one or more pairs of reference points are changeable.