转自（https://blog.csdn.net/weixin_44347020/article/details/107691522?utm_medium=distribute.pc_aggpage_search_result.none-task-blog-2~all~first_rank_v2~rank_v28-7-107691522.nonecase&utm_term=yolov4cfg%E6%96%87%E4%BB%B6%E8%AF%A6%E8%A7%A3&spm=1000.2123.3001.4430）