- OpenCV tutorial http://docs.opencv.org/2.4/doc/tutorials/tutorials.html
- Faster-Rcnn https://github.com/rbgirshick/py-faster-rcnn http://arxiv.org/abs/1506.01497
- Canny http://www.cse.iitd.ernet.in/~pkalra/csl783/canny.pdf
- Background subtraction https://www.behance.net/gallery/Vehicle-Detection-Tracking-and-Counting/4057777
- Haar Cascade http://www.ijcee.org/papers/747-P213.pdf https://github.com/andrewssobral/vehicle_detection_haarcascades