playing with hog descriptor and tracker
Having fun with Chinese meme "人人都是孙笑川"
Future Plan
1.fix bugs with the runtime errors
"(-215) 0 <= roi.x && 0 <= roi.width && roi.x + roi.width <= m.cols && 0 <= roi.y && 0 <= roi.height && roi.y + roi.height <= m.rows in function Mat"