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 tissue and its use. Facial tissue and paper handkerchiefs are made from the lowest basis weights tissue paper (14 18 g/m). The surface is often made smoother by light calendering. These paper types consist usually of 2–3 plies. Because of high quality requirements the base tissue is normally made entirely from pure chemical pulp, but might contain added selected recycled fiber. The tissue paper might be treated with softeners, lotions or added perfume to get the right properties or "feeling". The finished facial tissues or handkerchiefs are folded and put in pocket-size packages or a box dispenser. Facial tissue has been