7 目标检测常见指标（mAp等）

 

目标检测常见指标（mAP等）

1 目标检测中的常见指标

TP ：检测正确的的框数量

FP ：检测错误的框数量

FN：未检测到GT的数量

 

Presion :TP/(TP+FP) 查准率

Recall :TP/(TP+FN) 查全率

 

mAP: mean Average Precision  各类别AP的平均值

说明：AP：P-R曲线下的面积（Presion-Recall曲线）

  

 

 

 2 COCO 评价指标

 

 

 Average Precision  (AP) @[ IoU=0.50:0.95 | area=   all | maxDets=100 ] = 0.067 # 10个IOU取平均的指标
 Average Precision  (AP) @[ IoU=0.50      | area=   all | maxDets=100 ] = 0.167
 Average Precision  (AP) @[ IoU=0.75      | area=   all | maxDets=100 ] = 0.000
 Average Precision  (AP) @[ IoU=0.50:0.95 | area= small | maxDets=100 ] = -1.000  #大尺寸区域的指标，参考上图
 Average Precision  (AP) @[ IoU=0.50:0.95 | area=medium | maxDets=100 ] = 0.000
 Average Precision  (AP) @[ IoU=0.50:0.95 | area= large | maxDets=100 ] = 0.067
 Average Recall     (AR) @[ IoU=0.50:0.95 | area=   all | maxDets=  1 ] = 0.133   #同一张图片不同检测框个数的recall
 Average Recall     (AR) @[ IoU=0.50:0.95 | area=   all | maxDets= 10 ] = 0.133
 Average Recall     (AR) @[ IoU=0.50:0.95 | area=   all | maxDets=100 ] = 0.133
 Average Recall     (AR) @[ IoU=0.50:0.95 | area= small | maxDets=100 ] = -1.000
 Average Recall     (AR) @[ IoU=0.50:0.95 | area=medium | maxDets=100 ] = 0.000
 Average Recall     (AR) @[ IoU=0.50:0.95 | area= large | maxDets=100 ] = 0.133