Lau, H.
, , T.
and Herman, M.
(1992),
Optimal Estimation of Optical Flow, Time-to-contact and Depth, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=820427
(Accessed October 3, 2024)