Face mesh detection
With ML Kit's face mesh detection API, you can generate in real-time a high accuracy mesh of 468 3D points for selfie-like images. Faces should be within ~2 meters (~7 feet) of the camera.
If you want to detect faces further than ~2 meters (~7 feet) away from the camera, please see ML Kit's face detection SDK.
Here are some of the terms used regarding the face mesh detection feature:
- The bounding box is a rectangular area for a detected face.
- Face mesh info is a group of 468 3D points and edges that can be used to draw the geometry mesh for a detected face.
The face mesh detection API generates a face mesh for detected faces, each containing 468 3D points and edges. With face mesh detection, you can perform more accurate operations on faces real-time, such as AR filters, selfie capture, and video chat.
- Recognize and locate faces Get the bounding box for detected faces in a selfie-like picture.
- Get face mesh information Get the 468 3D points and triangle info for each detected face.
- Process video frames in real time Face mesh detection is performed on-device, and is fast enough for real-time applications, such as video manipulation.
|Input||Output ("Bounding box only" mode)||Output ("Face mesh" mode)|
Comparison with ML Kit face detection SDK
|Face mesh detection API||Face Detection API|
|Use case recommended (examples)||
|Latency||Low (~14ms on Pixel 3)
Recommended for real-time
|Medium (~60ms on Pixel 3 when fast mode is ON)|
|Recommended input||Faces captured within ~2 meters (~7 feet)||Any picture with faces|
|Face points output||For each face, 468 3D points and triangle info when "face mesh" mode is enabled.||For each face, 133 2D points when "face contour" mode is enabled.|
|# faces recognized||
|Face classification (e.g. smiling)||No||Yes|
|Implementation options||Bundled only||Bundled / Unbundled|
|App size||Bundled: ~6.4 MB
Unbundled: not available yet