Brief descriptor

1. What is a brief descriptor?
2. What is meant by feature descriptor?
3. What is detector and descriptor?
4. What are orb features?

What is a brief descriptor?

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.

What is meant by 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.

What is detector and descriptor?

The detector is a corner detector. The descriptor is a binary string representing the signs of the difference between certain pairs of pixels around the interest point.

What are orb features?

ORB has the following key qualities compared to other feature types: Efficient; Outstanding performance-quality tradeoff. Resistant to image noise. Rotation invariant. Multi-scale.