caa a22 4500 44532239X CHVBK 20180317142708.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1007/s00530-011-0228-y doi (NATIONALLICENCE)springer-10.1007/s00530-011-0228-y An interactive handheld spherical 3D object display system [Elektronische Daten] [Zhaorong Li, Kin-Hong Wong, Man-Chuen Leung, Hoi-Fung Ko, Kai-Ki Lee, Michael Chang] Traditional display systems usually display 3D objects on static screens (monitor, wall, etc.) and the manipulation of virtual objects by the viewer is usually achieved via indirect tools such as keyboard or mouse. It would be more natural and direct if we display the object onto a handheld surface and manipulate it with our hands as if we were holding the real 3D object. In this paper, we propose a prototype system by projecting the object onto a handheld foam sphere. The aim is to develop an interactive 3D object manipulation and exhibition tool without the viewer having to wear spectacles. In our system, the viewer holds the sphere with his hands and moves it freely. Meanwhile we project well-tailored images onto the sphere to follow its motion, giving the viewer a virtual perception as if the object were sitting inside the sphere and being moved by the viewer. The design goal is to develop a low-cost, real-time, and interactive 3D display tool. An off-the-shelf projector-camera pair is first calibrated via a simple but efficient algorithm. Vision-based methods are proposed to detect the sphere and track its subsequent motion. The projection image is generated based on the projective geometry among the projector, sphere, camera and the viewer. We describe how to allocate the view spot and warp the projection image. We also present the result and the performance evaluation of the system. Springer-Verlag, 2011 3D interactive display nationallicence Projector-camera system nationallicence Object tracking nationallicence Virtual and augmented reality nationallicence Li Zhaorong Department of Computer Science and Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong aut Wong Kin-Hong Department of Computer Science and Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong aut Leung Man-Chuen Department of Computer Science and Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong aut Ko Hoi-Fung Department of Computer Science and Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong aut Lee Kai-Ki Department of Information Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong aut Chang Michael Department of Information Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong aut Multimedia Systems Springer-Verlag 17/5(2011-10-01), 435-447 0942-4962 17:5<435 2011 17 530 https://doi.org/10.1007/s00530-011-0228-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00530-011-0228-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Li Zhaorong Department of Computer Science and Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong aut NATIONALLICENCE 700 1- Wong Kin-Hong Department of Computer Science and Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong aut NATIONALLICENCE 700 1- Leung Man-Chuen Department of Computer Science and Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong aut NATIONALLICENCE 700 1- Ko Hoi-Fung Department of Computer Science and Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong aut NATIONALLICENCE 700 1- Lee Kai-Ki Department of Information Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong aut NATIONALLICENCE 700 1- Chang Michael Department of Information Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong aut NATIONALLICENCE 773 0- Multimedia Systems Springer-Verlag 17/5(2011-10-01), 435-447 0942-4962 17:5<435 2011 17 530 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer