Python Opencv Tracker 无法正常初始化 （ tracker.init）

官方文档

应该写成这样的形式（可以使用函数对象）

另外，需要注意安装对应版本的opencv-contrib-python

同时需要注意某些API已经不再支持

retval = cv.TrackerKCF_create(	[, parameters]	)

# initialize a dictionary that maps strings to their corresponding OpenCV object tracker implementations
OPENCV_OBJECT_TRACKERS = {
    "csrt": cv2.TrackerCSRT_create,
    "kcf": cv2.TrackerKCF_create,
    "mil": cv2.TrackerMIL_create,
    "goturn": cv2.TrackerGOTURN_create
}
# grab the appropriate object tracker using our dictionary of OpenCV object tracker objects
tracker = OPENCV_OBJECT_TRACKERS[args["tracker"]]()