when i using the object detection samples in dnn module, i can not set the thresh to 0.001, it seems like that the thresh is a constant in the program

edit

the command line: ./example_dnn_object_detection -m=/root/yolo/models/yolov3.weights -c=/root/yolo/darknet/cfg/yolov3.cfg -i=/root/yolo/darknet/data/dog.jpg --thr=0.001 -scale=0.00392

./example_dnn_object_detection -m=/root/yolo/models/yolov3.weights -c=/root/yolo/darknet/cfg/yolov3.cfg -i=/root/yolo/darknet/data/dog.jpg --thr=0.00001 -scale=0.00392

the output images are the same.