A CIFaceFeature is a class in Apple's iOS. It describes a face detected in a still or video image.
A CIFaceFeature
is a class in Apple's IOS. It describes a face detected in a still or video image. Its properties provide locations for the face’s eyes and mouth. A face object in a video can also have properties that track its location over time—tracking ID and frame count.
Documentation for that class can be found here: CIFaceFeature Reference.