Calibration-free visual control using projective invariance
ICCV '95 Proceedings of the Fifth International Conference on Computer Vision
TouchLight: an imaging touch screen and display for gesture-based interaction
Proceedings of the 6th international conference on Multimodal interfaces
Low-cost multi-touch sensing through frustrated total internal reflection
Proceedings of the 18th annual ACM symposium on User interface software and technology
Estimating virtual touchscreen for fingertip interaction with large displays
OZCHI '06 Proceedings of the 18th Australia conference on Computer-Human Interaction: Design: Activities, Artefacts and Environments
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This paper presents a novel approach of using stereovision or pseudo-stereovision to generate touch screen experience. A pair of digital cameras or a set of a digital camera and a mirror is mounted at the corners of a computer display. Algorithms are presented to generate the positions of the pointers when they are close to the screen. The paper also proposes to use positions, velocities and accelerations of a pointer to generate virtual forces in the active space of the touch screen. The user interface will be friendlier by applying the rich information obtained from the input methods presented in this paper.