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
The Birth of Venus of the Italian Renaissance; of the two, the "Birth" is even better known than the "Primavera". As depictions of subjects from classical mythology on a very large scale they were virtually unprecedented in Western art since classical antiquity, as was the size and prominence of a nude female figure in the "Birth". It used to be thought that they were both commissioned by the same member of the Medici family, but this is now uncertain. They have been endlessly analysed by art historians, with the main themes being: the emulation of ancient painters and the context of wedding celebrations (generally