Projection autofocus

摘要

Techniques are described for projecting content onto surfaces and for focusing the content. When content is projected by a projector onto a surface, the surface is observed by a camera or other sensor, and the contrast of the projected content is evaluated. The projector then varies its focal point to improve or maximize the observed contrast of the projected content.

主权项

1. A system comprising:
one or more processors; a camera; a projector having an adjustable focus; one or more computer-readable media storing computer-executable instructions that, when executed by the one or more processors, cause the one or more processors to perform acts comprising:
projecting content onto a display area with the projector, the content including moving images;capturing one or more different images of at least a portion of the display area with the camera;evaluating contrast of the captured one or more different images; andadjusting the focus of the projector based at least in part on the evaluating to increase contrast of the projected content relative to the evaluated contrast of the captured one or more different images.