Face Detection

Face detection algorithms identify face locations, orientations, and key landmarks including eyes, nose, mouth, jawline, and eyebrows. Modern systems detect faces across a wide range of angles, sizes, lighting conditions, and partial occlusions. Face detection powers automatic portrait enhancements — applying skin smoothing, eye brightening, and teeth whitening only to face regions. It enables accurate background blur that preserves face sharpness, automatic red-eye correction, and face-aware cropping that keeps subjects centered. Privacy applications use face detection to automatically blur faces in street photography or security footage. The technology underpins most social media filters and AR effects that track and augment facial features in real time.