Rigid Body Segmentation and Shape Description from Dense Optical Flow under Weak Perspective.

Joseph Weber Jitendra Malik Rigid Body Segmentation and Shape Description from Dense Optical Flow under Weak Perspective. 251-256 1995 ICCV http://computer.org/proceedings/iccv/7042/70420251abs.htm db/conf/iccv/iccv1995.html#WeberM95