1 | initial version |
Start by reading the original paper described by Viola and Jones. It explains the basic concepts about face detection and cascade classifiers, which are used here for generic object detection.
Then the following pages can give you more information - http://docs.opencv.org/modules/objdetect/doc/cascade_classification.html?highlight=cascade%20classifier#CascadeClassifier - http://docs.opencv.org/doc/user_guide/ug_traincascade.html?highlight=cascade%20classifier - http://docs.opencv.org/doc/tutorials/objdetect/cascade_classifier/cascade_classifier.html?highlight=cascade%20classifier
Once you completely understand these topics, you will be able to train your own model. Also searching on this forum on cascade classifier and traincascade will yield tons of interesting discussions.