Brief image processing

1. What is brief in image processing?
2. How does brief descriptor work?
3. What is Orb computer vision?
4. What is a feature descriptor?

What is brief in image processing?

BRIEF is a general-purpose feature point descriptor that can be combined with arbitrary detectors. It is robust to typical classes of photometric and geometric image transformations.

How does brief descriptor work?

BRIEF (Binary Robust Independent Elementary Features) is an efficient feature point descriptor. It is highly discriminative even when using relatively few bits and is computed using simple intensity difference tests. BRIEF does not have a sampling pattern thus pairs can be chosen at any point on the SxS patch.

What is Orb computer vision?

Oriented FAST and rotated BRIEF (ORB) is a fast robust local feature detector, first presented by Ethan Rublee et al. in 2011, that can be used in computer vision tasks like object recognition or 3D reconstruction.

What is a feature descriptor?

A feature descriptor is a method that extracts the feature descriptions for an interest point (or the full image). Feature descriptors serve as a kind of numerical “fingerprint” that we can use to distinguish one feature from another by encoding interesting information into a string of numbers.