classes=      #修改成1

train  = /home/pjreddie/data/coco/trainvalno5k.txt

valid  = coco_testdev

#valid = data/coco_val_5k.list

names = data/coco.names

backup = /home/pjreddie/backup/

eval=coco

void test_detector(char *datacfg, char *cfgfile, char *weightfile, char *filename, float thresh)函数中

draw_detections(im, l.w*l.h*l.n, thresh, boxes, probs, names, alphabet, ); //最后一个参数修改成1。line=481

void run_detector(int argc, char **argv)//该函数中，倒数第三行.line=542

int classes = option_find_int(options, "classes", );//最后一个参数修改成1

make clean

make

./darknet detect cfg/yolo.cfg yolo.weights data/person.jpg