@article{weng2017detection1,
  title   = "Object Detection for Dummies Part 1: Gradient Vector, HOG, and SS",
  author  = "Weng, Lilian",
  journal = "lilianweng.github.io",
  year    = "2017",
  url     = "https://lilianweng.github.io/posts/2017-10-29-object-recognition-part-1/"
}