Fig. 5.

Representation of two face-search trials, one in standard definition (left) and one in high definition (right). The search target at the top is from a video of the target. Legal restrictions prevent publication of the original target and closed-circuit television (CCTV) images. The target person shown here is a volunteer who has given permission for the images to be reproduced. See the attributions for the CCTV image in “Acknowledgements”