Tourists often turn to strangers when they need a photographer while traveling; however, they do so at a cost. Strangers are not typically trained photographers, nor are they telepathically intuiting what composition the tourist wants. Existing smartphone camera interfaces do not communicate the desired framing to the stranger, and prior work in mobile photography guidance does not manage the 3D movement required when composing the tourist’s ideal photo. We offer a new kind of mobile interaction for communicating the intended photo to a stranger without instructions. First, the tourist composes a photo with the desired framing. Our app, Cake Cam, then stores the camera position and orientation. Finally, 3D augmented reality markers guide the stranger to retake the photo with the tourist now standing in the frame. Our study resulted in more accurate camera placements and required fewer additional instructions than the traditional tourist photography method.
Cake Cam leverages state-of-the-art 3D vision algorithms, which process vision and inertial sensor streams to provide the camera's real-time 3D position and orientation. This pose information is then used to guide a stranger back to the camera-owner's desired picture framing.
@inproceedings{lusk2019cake,
title={Cake Cam: Take Your Photo and Be in It Too},
author={Lusk, Candice and Jones, Michael D},
booktitle={Proceedings of the 21st International Conference on Human-Computer Interaction with Mobile Devices and Services},
pages={1--9},
year={2019}
}