Opencv报错003：AttributeError: module ‘cv2‘ has no attribute ‘TrackerBoosting_create‘

错误描述：在利用opencv库做目标跟踪时，报错如下：

AttributeError: module 'cv2' has no attribute 'TrackerBoosting_create'
# 或者
AttributeError: module 'cv2' has no attribute 'TrackerTLD_create'
# 或者
AttributeError: module 'cv2' has no attribute 'TrackerMedianFlow_create'
# 或者
AttributeError: module 'cv2' has no attribute 'TrackerMOSSE_create'

报错原因：opencv版本包括4.5.1以上，都不支持这些函数；网上其它解决方法多数提出安装 ‘opencv-contrib-python’，但是个人试过无法解决该问题；

解决方法：通过cv2.legacy来调用这些函数，比如 ‘cv2.TrackerBoosting_create’ 改成 ‘cv2.legacy.TrackerBoosting_create’；其它也类似改动即可！

原始代码：

OPENCV_OBJECT_TRACKERS = {
	"csrt": cv2.TrackerCSRT_create,
	"kcf": cv2.TrackerKCF_create,
	"boosting": cv2.TrackerBoosting_create,
	"mil": cv2.TrackerMIL_create,
	"tld": cv2.TrackerTLD_create,
	"medianflow": cv2.TrackerMedianFlow_create,
	"mosse": cv2.TrackerMOSSE_create
}

改动后代码：

OPENCV_OBJECT_TRACKERS = {
	"csrt": cv2.TrackerCSRT_create,
	"kcf": cv2.TrackerKCF_create,
	"boosting": cv2.legacy.TrackerBoosting_create,
	"mil": cv2.TrackerMIL_create,
	"tld": cv2.legacy.TrackerTLD_create,
	"medianflow": cv2.legacy.TrackerMedianFlow_create,
	"mosse": cv2.legacy.TrackerMOSSE_create
}

欢迎指正！