Real-time keystone correction for hand-held projectors with an RGBD camera

• Published in: 2013 IEEE International Conference on Image Processing pp. 3142 - 3146
• Main Authors: Weipeng Xu, Yongtian Wang, Yue Liu, Dongdong Weng, Mengwen Tan, Salzmann, Mathieu
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-09-2013
• Subjects: hand-held projector; keystone correction; RGBD camera
• ISSN: 1522-4880; 2381-8549
• DOI: 10.1109/ICIP.2013.6738647

This paper introduces a novel and simple approach to realtime continuous keystone correction for hand-held projectors. An RGBD camera is attached to the projector to form a projector-RGBD-camera system. The system is first calibrated in an offline stage. At run-time, we then estimate the relative pose between the projector and the screen using the RGBD camera, which lets us correct the keystone distortion by warping the projected image accordingly. Experimental results show that our method outperforms existing techniques in terms of both accuracy and efficiency.