We  study  the  spatiotemporal  correlation  in natural  time-varying
   images and explore the hypothesis that the visual system is concerned
   with   the   optimal   coding   of   visual  representation   through
   spatiotemporal  decorrelation  of  the  input  signal.   Based on the
   measured  spatiotemporal  power  spectrum,  the  transform needed  to
   decorrelate input signal is  derived  analytically  and then compared
   with the actual processing observed in psychophysical experiments.

   (In: Advances in Neural Information Processing Systems 9, Mozer MC,
    Jordan MI, Petsche T, eds, MIT Press, Cambridge, MA. page 859-865. 1997)

   (Papers' Index of Dawei Dong)