According to cv::MultiTracker Class Reference http://docs.opencv.org/3.1.0/d8/d77/classcv_1_1MultiTracker.html#a1386c7c7c3b5418f0f65a03b93cc5c65
bool update (const Mat &image)
returns just a single boolean, so how to tell which of the objects being tracked returned the false?
Thanks for any help.