opencv_createsamples -vec {output_file} -info {positive sample info.lst file} -num {pos sample number} -w {width} -h {height}

opencv_traincascade -data {output_directory} -vec {output of createsamples} -bg {bg file} -numPos {positive sample starting number} -numNeg {negatives starting number} -numStages {total num of stages} -w {width} -h {height}

resizer makes gray also use create_custom_sample for create samples from videos change your general(template) cascade in general_recognizer save your cascade diroctories as <local_cascade_directory>--<cascade_name>

opencv_createsamples -vec circle.vec -info info.lst -num 1520 -w 25 -h 25

opencv_traincascade -data ./crc_out -vec ./circle.vec -bg ./bg.txt -numPos 1000 -numNeg 1000 -numStages 20 -w 25 -h 25