@misc{1147791,
  author = {Herbert Lau and Tsai-Hong Hong and Martin Herman},
  title = {Optimal estimation of optical flow, time-to-contact and depth:},
  year = {1992},
  month = {1992-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NIST.IR.4919},
  language = {en},
}