空놀이

http://blog.naver.com/samsjang/220498694383

http://www.robindavid.fr/opencv-tutorial/chapter10-movement-detection-with-background.html

http://stackoverflow.com/questions/14508190/new-to-python-opencv-motion-tracking-using-webcam-thresholding-dilate

http://blog.naver.com/PostView.nhn?blogId=pinkjea95&logNo=220772239173&redirect=Dlog&widgetTypeCall=true

http://www.pyimagesearch.com/2016/04/11/finding-extreme-points-in-contours-with-opencv/

1. Open CV setup

http://www.pyimagesearch.com/2015/10/26/how-to-install-opencv-3-on-raspbian-jessie/

2. camera recognization

볼트레킹

http://www.pyimagesearch.com/2015/09/14/ball-tracking-with-opencv/

http://blog.naver.com/PostView.nhn?blogId=chandong83&logNo=220826500738&redirect=Dlog&widgetTypeCall=true

얼굴인식

http://blog.naver.com/PostView.nhn?blogId=chandong83&logNo=220829044388&categoryNo=29&parentCategoryNo=0&viewDate=&currentPage=1&postListTopCurrentPage=1&from=postView

3. 아두이노와 시리얼 통신

http://hinco.tistory.com/4

* etc

http://www.hardcopyworld.com/gnuboard5/bbs/board.php?bo_table=lecture_rpi&wr_id=2

http://webnautes.tistory.com/916