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
Facial feminization surgery Facial feminization surgery Facial feminization surgery (FFS) is a set of cosmetic surgical procedures that alter typically male facial features to bring them closer in shape and size to typical female facial features. FFS can include various bony and soft tissue procedures such as brow lift, rhinoplasty, cheek implantation, and lip augmentation. Faces contain secondary sex characteristics that make male and female faces readily distinguishable, including the shape of the forehead, nose, lips, cheeks, chin, and jawline; the features in the upper third of the face seem to be the most important, but subtle changes in the lips can have