1. A target, comprising: a background including a first intensity; and a plurality of ovoid regions located on the background, wherein each of the plurality of ovoid regions includes a second intensity contrasting the first intensity; wherein each of the plurality of ovoid regions is spaced at least a minimum distance from other of the plurality of ovoid regions; wherein each of the plurality of ovoid regions includes a minor axis having at least the minimum distance; wherein each of the plurality of ovoid regions is spaced at least the minimum distance from the outer edge of the background; and wherein a width of a safety region substantially surrounding the background region is at least the minimum distance.