About the ready detection model that offered by OpenCV, like lbpcascade_frontalface.xml and haarcascade_frontalface_default.xml, etc.
I know I can use myself databases to train the new model.
but... If I want to use the ready .xml model and "additional add" my own databases to "retrain" the ready detection model. Is it OK to do? And how can I do?
I want to detect frontal face and hope to use the ready lbpcascade_frontalface.xml and add other training samples to improve the model. I want to add the negative samples to retrain and reduce the false positive rate and increse the detect speed.