Paper
30 October 2009 Automatic calibration of multi-touch projected display
You Lu, Yue Liu, Yongtian Wang
Author Affiliations +
Proceedings Volume 7495, MIPPR 2009: Automatic Target Recognition and Image Analysis; 749528 (2009) https://doi.org/10.1117/12.833581
Event: Sixth International Symposium on Multispectral Image Processing and Pattern Recognition, 2009, Yichang, China
Abstract
Interactive accuracy is directly relative to the distribution of the calibration markers in multi-touch system. This paper describes a new calibration method of multi-touch projected display, which uses different types of markers in different areas of the projected display screen and calculates the positions of markers with some special functions such as corner detection and integral of bright spots. With the presented methods, the positions of markers can be calculated accurately. Furthermore, the markers are grouped using automatic calibration method, which speeds up the calculation by almost ten times. The methods developed in this paper can be used for linear and non-linear camera environment.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
You Lu, Yue Liu, and Yongtian Wang "Automatic calibration of multi-touch projected display", Proc. SPIE 7495, MIPPR 2009: Automatic Target Recognition and Image Analysis, 749528 (30 October 2009); https://doi.org/10.1117/12.833581
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KEYWORDS
Calibration

Cameras

Corner detection

Edge detection

Distortion

Environmental sensing

Computing systems

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