Abstract: In one embodiment, a method includes identifying a first user in an input image, accessing social data of the first user in the input image, where social data comprises information from a social graph of an online social network, selecting, based on social data of the first user in the input image, a mask from a set of masks, where the mask specifies one or more mask effects, and for each of the input images, applying the mask to the input image. The set of masks may comprise masks previously selected by friends of the first user within the online social network. The selected mask may be selected from a lookup table that maps the social data to the selected mask.

Abstract: In one embodiment, a method includes identifying a first user in an input image, accessing social data of the first user in the input image, where social data comprises information from a social graph of an online social network, selecting, based on social data of the first user in the input image, a mask from a set of masks, where the mask specifies one or more mask effects, and for each of the input images, applying the mask to the input image. The set of masks may comprise masks previously selected by friends of the first user within the online social network. The selected mask may be selected from a lookup table that maps the social data to the selected mask.

Abstract: A method and systems for performing an osteotomy of a bone using a surgical navigation system without attaching a bone tracking device directly to any portion of the bone that will remain after the osteotomy includes affixing a tracking device to a portion of the bone that will be removed during the osteotomy, determining an anatomical profile of the bone; and performing cuts using positional guidance from the surgical navigation system.