目标检测与跟踪中遇到的问题？？？

OpenCV中：DetectMultiScale (InputArray image, vector & objects, double scaleFactor = 1.1, int minNeighbors = 3, int flags = 0, Size minSize = Size (), Size maxSize = Size ()）这里存储目标的类型vector type, 然而，跟踪算法定义的类型为Rect2d类型， MultiTracker :: add (const String & trackerType, const Mat & image, const Rect2d & boundingBox) ，请问大神们有解决办法吗？？？

http://xueshu.baidu.com/s?wd=paperuri:(7c078b5e7f6543f755d4bd7eabaf4032)&filter=sc_long_sign&sc_ks_para=q%3D%E8%BF%90%E5%8A%A8%E7%9B%AE%E6%A0%87%E6%A3%80%E6%B5%8B%E4%B8%8E%E8%B7%9F%E8%B8%AA%E4%B8%AD%E6%9C%89%E5%85%B3%E9%97%AE%E9%A2%98%E7%9A%84%E7%A0%94%E7%A9%B6&tn=SE_baiduxueshu_c1gjeupa&ie=utf-8&sc_us=1694271480849669186