Proceedings of the 25th annual conference on Computer graphics and interactive techniques
Thermo-Key: Human Region Segmentation from Video
IEEE Computer Graphics and Applications
Camera-Based Detection and Removal of Shadows from Interactive Multiprojector Displays
IEEE Transactions on Visualization and Computer Graphics
Virtual rear projection: do shadows matter?
CHI '05 Extended Abstracts on Human Factors in Computing Systems
Shadow Elimination and Blinding Light Suppression for Interactive Projected Displays
IEEE Transactions on Visualization and Computer Graphics
Shadow reaching: a new perspective on interaction for large displays
Proceedings of the 20th annual ACM symposium on User interface software and technology
Eye-Shield: protecting bystanders from being blinded by mobile projectors
Proceedings of the ACM International Conference on Interactive Tabletops and Surfaces
BCS '10 Proceedings of the 24th BCS Interaction Specialist Group Conference
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Users interacting with front-projected displays often work between the projector and the display surface. This causes undesirable projection on the user as well as temporary blindness from looking into the bright light of the projector. In this paper, we present pre-emptive shadows, a technique that uses a camera-projector system to detect and turn off pixels that would otherwise be needlessly cast upon users' bodies, especially their faces. We present measurements that show that system reduces the brightness of the blinding light by about a factor of 5.