Development of 3D Positioning Scheme by Integration of Multiple Wiimote IR Cameras

Abstract

A Wiimote 3D localization scheme has been developed for smart living or computer animation applications. This scheme utilizes a pair of Wiimotes to form a stereo vision and a kinematics relation is established to extract the 3D position of objects by using geometric transformation. However, due to the limitation in pixel resolution, the positioning resolution deteriorated at larger sensing distance. Therefore, a dual Wiimotes 3D scheme is also proposed for further improving the performance at the foundation of the single Wiimote 3D localization. By adding another Wiimote pair at the opposite side, we can expand the positioning range and reduce the positioning error with larger sensing distance. The experimental results indicate that this scheme is effective in achieving the above mentioned goals. With properly integration with this scheme, It is expected that applications such as positioning of indoor mobile robots and human motion capture for animations could achieve a better performance.

General Dual Wiimote 3D Localization Scheme: Sensitivity Analysis and Its Application on Robot Arm Attitude Detection

“…As addressed above, the ultimate goal of this research is to build up a general large area indoor localization system such that the moving object can be seen at least two wiimote 3D pairs at any locations and any moments, including passing certain shielding location where the object may not be observed by some wiimotes. However, this implies that the configuration of the dual wiimote 3D cannot have an optimized fixed angle just like Zhan's improvement (9) . As a result, the sensitivity or the robustness of the dual wiimote localization scheme against is important.…”

“…As mentioned above, an additional pair of wiimote cameras, hereinafter referred to as" wiimote camera 2", is placed on the opposite side to the original pair of wiimote cameras, hereinafter referred to as "wiimote camera 1", shown as Figure 4. While the Z direction distance between the infrared LED and wiimote camera 1 is detected to be further than the distance between infrared LED and wiimote camera 2, the system will take the 3D position data captured by the wiimote camera 2 as a compensation (9) and the data selection depends on certain criteria such as the RMS of data fluctuation. Experiment results, as shown in Figure 5, show that this system is capable to improve the inaccuracy problem of single wiimote 3D localization scheme.…”

“…Zhan et al (9) further utilized dual wiimote 3D to improve the sensing resolution. The scheme, called as the fixed-angle dual wiimote 3D localization, consists of placing two wiimote 3D pairs in opposite direction, the sensing resolution can be improved.…”

“…3. Comparison of observed data by single wiimote 3Dlocalization system and real position of infrared LED(9)…”

Development of General Wiimote 3D Localization Scheme and its Application on Robot Arm Attitude Detection

“…Chan et al [9] further utilized dual wiimote 3D to improve the sensing resolution. The scheme, called as the fixed-angle dual wiimote 3D localization, consists of placing two wiimote 3D pairs in opposite direction, the sensing resolution can be improved.…”