Non-max suppression

非最大值抑制

Non-max suppression

It is a way for you to make sure that your algorithm detects each object only once.

It clean up some detections.

Concretely, it first looks at the probabilities associated with each of these detections. You are going to output your maximal probabilities classifications, but suppress the close-by ones that are non-maximal.

用于CV中目标检测算法，排除对物体的重复定位，仅筛选出来对物体最优的定位，一般和交叉并比算法结合使用。

交并比算法 IoU: Intersection over Union

IoU = 交集/并集