US patent 4924310, issued 1990
A method for the determination of
motion vector fields
from digital image sequences derives a motion vector field
from two successive image frames, with the motion vector
field relating a
picture element of the other image frame to
every picture element of the one
image frame, whereby the
relation is defined by a motion vector which
reproduces the
displacement of the picture elements relative to one another
and whereby respectively all picture elements in a square or
rectangular block
of picture elements receive the same
motion vector. The determination of the
motion vectors is
carried out by minimization of a composite objective
function which, first, takes into consideration the
difference in the
luminance values of the mutually allocated
picture elements of the two
established frames, and, then
evaluates or weights the differences between
adjacent or
neighboring motion vectors, evaluating or weighting these
with the
assistance of a smoothing measure. The minimization
of this...
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