Perhaps the next step on this journey (after object detection within an image) is face detection. Face detection is a computer technology being applied in a variety of applications that strive to identify human faces within digital images.
Facial recognition is a way of detecting and identifying a human face through the use of technology. A facial recognition solution utilizes the logic of biometrics to map facial features from a photograph (or even video) and then compares the information with a database of known faces, looking for a match.
Biometrics is the measurement and statistical examination of people's unique physical and behavioral characteristics, based upon the principle that each and every individual can be accurately identified by his or her intrinsic physical or behavioral traits.