head- tracking, motion-tracking studies

[english version]

As a low cost and ready-to-use device for motion capture, IR sensor of the wii remote is used during demonstrations and it allows an easy comparison between other devices for motion capture. But the determination of 3D position is necessary for motion tracking. Here, the solutions use a 3D triangulation technique with 2 wiimotes for a 3D space positioning.

1. Touchable holography
One of the most impressive work about motion tracking (with wii controllers) is a merge between holographic display, 3D positioning and Ultrasound techniques :

Object [Title] Location	Publication – [Touchable Holography] University of Tokyo, Japan
WWW	Article : PDF Publication : PDF
Author (date)	Takayuki Hoshi, Hiroyuki Shinoda,Daisu Abe, Masafumi Takahashiy, Kei Nakatsumaz (July 2009)	Lang. : English
Abstract	(extract from "AddingTactile reaction to Hologram") In this paper a hologram with tactile reactions is presented. The developed system consists in three components; a holographic display a hand tracker and a tactile display. The tactile display which is our original device produces force on user’s bare hand without any contact by using radiation pressure of airborne ultrasound. It adds the sense of touch to optical images floating in mid-air. In order to represent the feeling of impact some improvements are added to the tactile display. As a result the tactile display has an ability to produce up to 4.8 gf without air flow. .
Comment	Integration of multimodal components goes ahead. Just have a look at the following video for a better understanding of possible uses	Rate wwwww

[Touchable holography – YouTube's video from shinodalab - 07/16/2009]

2. Affordable 3D tracking technique
Mainly, based on 2 Wii remotes, the motion tracking is available without expensive 3D devices. Various low-cost applications are feasible, now :

Object [Title] Location	Publication – [Optical tracking using commodity hardware] University of Cambridge, United Kingdom
WWW	Web-site : LINK Publication : PDF
Author (date)	Simon Hay, Joseph Newman and Robert Harle (July 2009)	Lang. : English
Abstract	(extract from "Optical tracking using commodity hardware") We describe a method for using Nintendo Wii controllers as a stereo vision system to perform 3D tracking or motion capture in real time. Commodity consumer hardware allows a wireless, portable tracker to be created that obtains accurate results for a fraction of the cost of conventional setups. Consequently, tracking becomes viable in situations where cost or space were previously prohibitive. Initial results show an accuracy of +/-2mm over a large tracking volume.
Comment	Paper and software are available. See also the following video for more explanations	Rate wwwww

[Hacking Wiis for 3D tracking – YouTube's video from sjeh3 - 03/12/2008]

3. Other articles

- (MoSc Thesis) Full Body Tracking Kendo Game from Silviu Dumitrescu - University of Dublin, Trinity College (Lang. English) - Europe(Ireland)

- (Graduate Project) Headtracking using a Wiimote from Kevin Hejn, Jens Peter Rosenkvist - Department of Computer Science, University of Copenhagen - Europe(Netherlands)

- (BoSc report) Motion Tracking with a wii controller from Alessandro Vagliardo - Department of Informatics, University of Zürich (Switzerland)

- (course) Advanced Wireless Network - Overview of motion capture - Open course Ware (from ?)

- (Publication) Enhancing Presence in Head-mounted Display Environments by Visual Body Feedback Using Head-mounted Cameras from Gerd Bruder, Frank Steinicke, Kai Rothaus, Klaus Hinrichs - Department of Computer Science University of Munster - Europe(Germany)

- (Publication) Reorientation during Body Turns
G. Bruder 1 , F. Steinicke 1 , K. Hinrichs 1 and M. Lappe 2
1 Visualization and Computer Graphics (VisCG) Research Group,
Department of Computer Science, WWU Münster, Germany
2 Department of Psychology II, WWU Münster, Germany
(Head-tracking in Immersive Virtual Environment)

- (Publication) Navigation in smart environments using mediated reality tools
Jorge Torres-Solis/a,b,c,e, Mei Guan/d, Elaine Biddiss/a,b and Tom Chau/a,b
a Bloorview Research Institute, Bloorview Kids Rehab, Toronto, Canada
b Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Canada
c Edward S. Rogers Sr. Dept. of Electrical and Computer Engineering, University of Toronto, Toronto,
Canada
d Department of Cell and Systems Biology, University of Toronto, Toronto, Canada
e Komodo Openlab

- (presentation) An Asymmetric 2D Pointer / 3D Ray for 3D Interaction within Collaborative Virtual Environments from Thierry Duval and Cédric Fleury - Université de Rennes 1 – INSA de Rennes IRISA - UEB - Europe(France)
(A comparison between several 3D tracking techniques)