CavePainting: a fully immersive 3D artistic medium and interactive experience
I3D '01 Proceedings of the 2001 symposium on Interactive 3D graphics
Surface drawing: creating organic 3D shapes with the hand and tangible tools
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Distortion Correction of Magnetic Fields for Position Tracking
CGI '97 Proceedings of the 1997 Conference on Computer Graphics International
ISWC '99 Proceedings of the 3rd IEEE International Symposium on Wearable Computers
Proceedings of the 12th annual ACM international conference on Multimedia
Virtual pockets in virtual reality
EGVE'05 Proceedings of the 11th Eurographics conference on Virtual Environments
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In this paper we present Näprä, a novel tracking device suitable for fine motor interaction. The motivation for building the device was the need to track users' fingertips in an immersive free-hand drawing environment. Such tracking offers significant benefits for fine-grained artwork. Out of the numerous tracking methods ultrasound was chosen because of its affordability and low computational requirements. The design and implementation of both the hardware and software are discussed in detail in their respective sections. The device was evaluated in practice by two user tests, the first involving ten professional artists and the latter seven ordinary users. The results obtained in the tests are presented to reader as well as some directions for future work.