mtcnn performance is too poor, it is recommended to change to a better performance

[wangchao0899]

Because it often fails to detect faces, and also lacks smoothing capabilities

[arkouda]

I am trying to swap with opencv dnn face detector and landmark detector. Will submit a PR when done.

[Heonozis]

@arkouda sorry for long response, have you had a chance to find a solution and submit PR to this?