LI Sen, XIE Xiang, LI Guo-lin, et al. A Projector-Camera-Touchpad Human Computer Interaction System based on Color Structured Light[J]. 2019, 36(1): 61-65.
LI Sen, XIE Xiang, LI Guo-lin, et al. A Projector-Camera-Touchpad Human Computer Interaction System based on Color Structured Light[J]. 2019, 36(1): 61-65.DOI:
A Projector-Camera-Touchpad Human Computer Interaction System based on Color Structured Light
A method using only one projector and one camera is proposed to build a Projector-Camera-Touchpad (PCT). This HCI system uses projector-camera to catch the fingers motion to make any plane to a touchpad. This paper analyzes the error measuring the 3-dimentional coordinates of the system
and improves the accuracy by optimizing the calibration. To solve the problem of height when to touch happens and fingers position accuracy
based on a finger model the color structured light is adopted to get 3-dimension information and locate the finger touch point. At meanwhile
the trajectory of finger touch is optimized by Kalman filter. Finally
the touch accuracy is improved to 99% under 2mm and touch position precision are increased to 1 pixel. The function of the touchpad is realized by the projector-camera system.
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references
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