TY  - RPRT
TI  - Calculating time-to-contact using real-time quantized optical flow 
AU  - Camus, Ted
PY  - 1995
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - NIST IR 5609
DO  - 10.6028/NIST.IR.5609
ER  -