Usage: opencv_annotation [params] -?, -h, --help, --usage (value:true) show this message -a, --annotations (required) path to annotations txt file [example - /data/annotations.txt] -i, --images (required) path to image folder [example - /data/testimages/] -m, --maxWindowHeight (value:-1) (optional) images larger in height than this value will be scaled down -r, --resizeFactor (value:2) (optional) factor for scaling down [default = half the size] TIP: Use absolute paths to avoid any problems with the software!