目标特征检测之BRIEF描述符

BRIEF：Binary Robust Independent Elementary Rreatures

它不是什么特征，是类似与LBP 和Haar 这样的特征描述符，

#!/usr/bin/env python

import cv2

img = cv2.imread('chess.png')
gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)

star = cv2.FeatureDetector_create("STAR")
brief = cv2.DescriptorExtractor_create("BRIEF")
kp = star.detect(gray, None)

kp, des = brief.compute(img,kp)

print brief.getInt('bytes')
print des.shape