YuNet Face Detector

Updated 02 Oct 2026

•
What it is
- •
  A neural-network face detector available through OpenCV’s FaceDetectorYN interface with a compatible model.
•
Outputs
- •
  detection results include face boxes, facial landmarks, and confidence scores.
- •
  this project’s wrapper retains only integer bounding boxes.
•
Project configuration
- •
  loads an ONNX model and sets the detector's input size to the uplaoded image's dimensions
- •
  uses a detection-score threshold of $0.6$
- •
  a score threshold is a selection parameter, not proof that each accepted detection has exactly a $60\%$ probability of being correct
•
Distinguish from
- •
  Haar Cascade Classifier uses a different detection approach
- •
  neither detector alone performs identity recognition
•
Reference
- •
  https://docs.opencv.org/5.0/tutorials/dnn/dnn_face/dnn_face.html
•

Linked references 2