descriptors.py 文件源码

def __init__(self, descriptor_type):
        self.rootsift = False
        lists = ['sift','rootsift','orb','surf']
        if descriptor_type is 'sift':
            self.lfe = cv2.SIFT()
        elif descriptor_type is 'surf':
            self.lfe = cv2.SURF()
        elif descriptor_type is 'rootsift':
            self.lfe = cv2.SIFT()
        elif descriptor_type is 'orb':
            self.lfe = cv2.ORB()
        else:
            assert(descriptor_type in lists)