Automatic geometric and photometric calibration for tiling multiple projectors with a pan-tilt-zoom camera

Yu Pao Tsai*, Yen Nien Wu, Shou Chun Liao, Zen-Chung Shih, Yi Ping Hung

*此作品的通信作者

研究成果: Conference contribution同行評審

4 引文 斯高帕斯(Scopus)

摘要

Research on creating a large, high-resolution, low-cost display system has become increasingly important due to the growing desire in many fields for bigger and better displays. The goal of this research is to build a seamless large-scale display system by tiling multiple projectors with the help of a pan-tilt-zoom camera. In order to achieve this goal, we took two tasks into consideration: geometric calibration and photometric calibration. Compared to the previous work, our method for geometric calibration is more accurate, thanks to the much higher resolution images acquired by combining several zoom-in images and doing lens correction for the camera at first. For photometric calibration, we achieve color uniformity among projectors by utilizing the same PTZ camera, which is calibrated once with a colorimeter in a factory. Furthermore, we adopted the technique of producing a high dynamic range image from several images of different exposures to increase the measurement accuracy of the camera. In our experiments, the average error of photometric measurement achieved by our method is less than the mean perceptibility tolerance. Our method has great potential for many applications that require large and high-resolution displays.

原文English
主出版物標題2006 IEEE International Conference on Multimedia and Expo, ICME 2006 - Proceedings
頁面401-404
頁數4
DOIs
出版狀態Published - 1 12月 2006
事件2006 IEEE International Conference on Multimedia and Expo, ICME 2006 - Toronto, ON, Canada
持續時間: 9 7月 200612 7月 2006

出版系列

名字2006 IEEE International Conference on Multimedia and Expo, ICME 2006 - Proceedings
2006

Conference

Conference2006 IEEE International Conference on Multimedia and Expo, ICME 2006
國家/地區Canada
城市Toronto, ON
期間9/07/0612/07/06

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