related   based   \psi   different   other   spatial   case   that   paper   also   machine   representation   here   methods   image   disparity   images   this   flow   which   solution   below   with   stereo   \big   from   optical   code   segmentation   link   method   been   scene   results   while   vision   used   known   shows   using   function   model   information   where   have   both   variational   optical-flow   more   error   JoelLipman.Com