Figure 1.

Depth sensor placement and image comparison. Privacy-safe depth image compared with color photos. (A) Example standard color photo and (B) corresponding privacy-safe depth image captured by the sensor. The depth images are artificially colored: the darker color indicates pixels closer to the sensor. Black pixels indicate that the pixel is out of range. (C) Two depth sensors attached to the ceiling of a hospital ward. Subjects in the photo consented to have their photograph taken for illustrative purposes.