Maybe not a good idea

def _match_auto(self, screen, search_img, threshold):
        """Maybe not a good idea
        """
        # 1. try template first
        ret = ac.find_template(screen, search_img)
        if ret and ret['confidence'] > threshold:
            return FindPoint(ret['result'], ret['confidence'], consts.IMAGE_MATCH_METHOD_TMPL, matched=True)

        # 2. try sift
        ret = ac.find_sift(screen, search_img, min_match_count=10)
        if ret is None:
            return None

        matches, total = ret['confidence']
        if 1.0*matches/total > 0.5: # FIXME(ssx): sift just write here
            return FindPoint(ret['result'], ret['confidence'], consts.IMAGE_MATCH_METHOD_SIFT, matched=True)
        return None