Mesostructure from specularity using gradient illumination
PROCAMS '08 Proceedings of the 5th ACM/IEEE International Workshop on Projector camera systems
Eye reflection analysis and application to display-camera calibration
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
Display-camera calibration using eye reflections and geometry constraints
Computer Vision and Image Understanding
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Recent developments in the consumer market have indicated that the average user of a personal computer is likely to also own a webcam. With the emergence of this new user group will come a new set of applications, which will require a user-friendly way to calibrate the position of the camera with respect to the location of the screen. This paper presents a fully automatic method to calibrate a screen-camera setup, using a single moving spherical mirror. Unlike other methods, our algorithm needs no user intervention other then moving around a spherical mirror. In addition, if the user provides the algorithm with the exact radius of the sphere in millimeters, the scale of the computed solution is uniquely defined.