title: opencv_createsamples: command not found ubuntu
body: <p>I am following <a href="https://pythonprogramming.net/haar-cascade-object-detection-python-opencv-tutorial/" rel="nofollow noreferrer">Creating your own Haar Cascade OpenCV Python Tutorial</a> But when I get to making the samples I get <code>opencv_createsamples: command not found</code></p>
  <p>I am using this to create the samples <code>opencv_createsample -img img.jpg -bg bg.txt -info info/info.lst -pngoutput info -maxxangle 0.5 -maxyangle 0.5 -maxzangle 0.5 -num 573</code></p>
  <p>but I know the command exists because when I do <code>man opencv_createsamples</code> it pulls up the man page.
  I am using ubuntu 20.04.1</p>