Safety feature for projection subsystem using laser technology

摘要

A projection subsystem includes a projector for projecting an image on a projection surface and a safety feature for tuning the projector when presence of a human is detected in front of the projection surface. This safety feature includes: —an apparatus for computing a depth view corresponding to at least a portion of the projection surface, —a camera for acquiring a captured image, —a computing circuit for detecting an object between the projector and the projection surface from this depth view and determining that the object is a human from the captured image, and a control circuit for tuning the projector accordingly.

主权项

1. A method for safely projecting an image comprising steps of:
Projecting an image on a projection surface by actuating a projector; Computing a depth view corresponding to at least a portion of said projection surface; Acquiring a captured image by a camera; Detecting from said depth view and said captured image a presence of a human between said projector and the projecting surface, wherein detecting comprises:
delimiting at least one area within said depth view;applying a body feature recognition algorithm on an area of said captured image corresponding to said delimited area; anddetermining that the human is present and located between said projector and the projecting surface when a body feature of the human is recognized; and Tuning said projector in response to the detection.