This chapter describes the detection of keypoints and the definition of descriptors for those; a keypoint and a descriptor define a feature. The given examples are SIFT, SURF, and ORB, where we introduce BRIEF and FAST for providing ORB. We discuss the invariance of features in general, and of the provided examples in particular. The chapter also discusses three ways for tracking features: KLT, particle filter, and Kalman filter.
Keywords
- Kalman Filter
- Particle Filter
- Correspondence Problem
- Keypoint Detector
- Optic Flow Vector
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.