Seonglae Chomotion is 2D vector on the image
motion field는 3D 장면 움직임을 이미지로 투영한 것
3D point
2D Point (Scene Point)
parallax
옵티컬 플로우 (Optical Flow) 알아보기 (Luckas-Kanade w/ Pyramid, Horn-Schunck, FlowNet 등)
gaussian37's blog
https://gaussian37.github.io/vision-concept-optical_flow/
