AR Bridge Builder
An augmented reality (AR) version of the game Bridge Builder where the goal is to get a train safely across a river or valley. The bridge is drawn on a whiteboard using blue and red markers. Blue for the trusses and red for the anchor points.
Our computer vision algorithm recognizes the bridge and its anchor points. The resulting model is simulated using PhysX and overlaid on the camera image on the laptop monitor. Tension and pressure on the trusses are visualized using shades of blue and red, respectively.
The simulated bridge is drawn perspectively correct using the camera position and orientation at the start as a reference coordinate system. This works because all the points of the bridge lie on a flat surface, enabling us to compute a homography.
Our paper AR Bridge Builder: Real-time Vectorisation of Freehand Sketched Structures for an AR Application was published at the IVCNZ 2007 Conference and received the award for the best oral student presentation.
F. Petzold, J. Pfeil, C. Riechert, R. Green, ‘AR Bridge Builder: Real-Time Vectorisation of Freehand Sketched Structures for an AR Application’, Proceedings of Image and Vision Computing New Zealand 2007, pp. 192–197, Hamilton, New Zealand, December 2007. (download PDF)
- // Hardware
- webcam, whiteboard
- // Software
- C++, OpenCV, PhysX
- // Published
- IVCNZ, award for the best oral student presentation
- // People
- Frank Petzold
- Jonas Pfeil
- Christian Riechert
- // Advisors
- Prof. M. Billinghurst
- Dr. R. Green
- // Year
- 2007