Learning OpenCV 4 Computer Vision with Python 3 - Third Edition

BRIEF

Binary Robust Independent Elementary Features (BRIEF), on the other hand, is not a feature detection algorithm, but a descriptor. Let's delve deeper into the concept of what a descriptor is, and then look at BRIEF.

When we previously analyzed images with SIFT and SURF, the heart of the entire process was the call to the detectAndCompute function. This function performs two different steps – detection and computation – and they return two different results, coupled in a tuple.

The result of detection is a set of keypoints; the result of the computation is a set of descriptors for those keypoints. This means that OpenCV's cv2.SIFT and cv2.SURF classes implement algorithms for both detection and description. Remember, though, that the ...