Facial recognition system introduced varying technologies to the procedure. Some of the most notable include the following techniques: Some face recognition algorithms identify facial features by extracting landmarks, or features, from an image of the subject's face. For example, an algorithm may analyze the relative position, size, and/or shape of the eyes, nose, cheekbones, and jaw. These features are then used to search for other images with matching features. Other algorithms normalize a gallery of face images and then compress the face data, only saving the data in the image that is useful for face recognition. A probe image is then compared with
Forensic facial reconstruction type of face a person "may" have exhibited because of artistic subjectivity. The position and general shape of the main facial features are mostly accurate because they are greatly determined by the skull. In recent years, the presence of forensic facial reconstructions in the entertainment industry and the media has increased. The way the fictional criminal investigators and forensic anthropologists utilize forensics and facial reconstructions are, however, often misrepresented (an influence known as the "CSI effect"). For example, the fictional forensic investigators will often call for the creation of a facial reconstruction as soon as a set of skeletal remains