Photometric Stereo with Nearby Planar Distributed Illuminants
CRV '06 Proceedings of the The 3rd Canadian Conference on Computer and Robot Vision
Corneal Imaging System: Environment from Eyes
International Journal of Computer Vision
Screen-Camera Calibration using a Spherical Mirror
CRV '07 Proceedings of the Fourth Canadian Conference on Computer and Robot Vision
Using a Raster Display for Photometric Stereo
CRV '07 Proceedings of the Fourth Canadian Conference on Computer and Robot Vision
Eye gaze tracking techniques for interactive applications
Computer Vision and Image Understanding - Special issue on eye detection and tracking
Display-camera calibration using eye reflections and geometry constraints
Computer Vision and Image Understanding
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We present a novel technique for calibrating display-camera systems from reflections in the user's eyes. Display-camera systems enable a range of vision applications that need controlled illumination, including 3D object reconstruction, facial modeling and human computer interaction. One important issue, though, is the geometric calibration of the display, which requires additional hardware and tedious user interaction. The proposed approach eliminates this requirement by analyzing patterns that are reflected in the cornea, a mirroring device that naturally exists in any display-camera system. By applying this strategy we also obtain a continuous estimation of eye poses which facilitates further applications. We investigate the effect of display size, camera-eye distance and individual eye anatomy experimentally using only off-the-shelf components. Results are promising and show the general feasibility of the approach.