1. An image processing system comprising: a processing device; and a memory device, the memory device storing instructions that, when executed by the processor, cause the processor to: analyze a digital image and locate of head points of a subject in the digital image; evaluate the head points by performing a geometry test to evaluate a geometry of the head points; assign a confidence level based on the evaluation of the head points; and when the confidence level is less than a threshold value, initiate a review of at least one of the head points in the digital image, wherein the plurality of head points include an identified top of head point and an adjusted top of head point, wherein the adjusted top of head point is computed as being a distance below the identified top of head point.