hi, i use opencv cascade train like this: ./opencv_createsamples -vec righttoppointstraindata.vec -info info.dat 1. /home/opencv2461/bin/opencv_traincascade -data model -vec righttoppointstraindata.vec -bg bg.txt -numPos 100 -numNeg 400 -numStages 13 -w 30 -h 30 it runs but when after TRAINING 5-stage it runs very very slowly, like this: ===== TRAINING 6-stage ===== <begin pos="" count="" :="" consumed="" 100="" :="" 100="" it="" has="" been="" in="" 6="" stage="" for="" 2="" hours,="" but="" has="" not="" finished="" the="" 6="" stage,="" why?="" the="" 5-stage="" is="" like="" this:="====" training="" 5-stage="====" <begin="" pos="" count="" :="" consumed="" 100="" :="" 100="" neg="" count="" :="" acceptanceratio="" 400="" :="" 0.0132022="" precalculation="" time:="" 7="" +----+---------+---------+="" |="" n="" |="" hr="" |="" fa="" |="" +----+---------+---------+="" |="" 1|="" 1|="" 1|="" +----+---------+---------+="" |="" 2|="" 1|="" 1|="" +----+---------+---------+="" |="" 3|="" 1|="" 0.0275|="" +----+---------+---------+="" end="">