Detection

This page introduces the user to the way to detect features or objects in images.

• Tutorial: Keypoints matching
  This tutorial shows how to detect and match keypoints.
• Tutorial: Keypoint matching (deprecated)
  This tutorial shows how to detect and match SURF keypoints. It will be deprecated if you use an OpenCV version equal to 2.8.0 or a more recent version.
• Tutorial: Bar code detection
  This tutorial focuses on bar code (QR code, Data Matrix code) detection.
• Tutorial: Face detection
  This tutorial focuses on face detection thanks to OpenCV Haar cascade classifier.
• Tutorial: Object detection and localization
  This tutorial shows how to learn keypoints detected on a known object and how to use the matched correspondences to detect and estimate the pose of the object.
• Tutorial: AprilTag marker detection
  This tutorial focuses on AprilTag patterns detection and pose estimation.