Appeal No. 1999-2012
Application No. 08/801,610
in video signal images, wherein a motion vector indicates the
relative displacement of an object represented by a pixel from
one video signal image (frame) to the next video signal image
(frame). This is accomplished by first determining block
motion vectors for blocks of pixels by any of known methods and
then generating pixel motion vectors using combinations of
nearest associated block motion vectors.
A further understanding of the invention can be achieved
by the following claim.
13. A method for motion estimation using block matching,
wherein motion vectors related to blocks of pixels are
calculated, the blocks having a predetermined size, and wherein
from the motion vectors for adjacent blocks a single motion
vector is calculated, comprising the following steps:
dividing a picture into a such a multiplicity of blocks
that at least one block is surrounded at each side by adjacent
blocks;
performing for the blocks a block matching in order to
determine individual block motion vectors, each corresponding
to a particular block of pixels;
calculating for each pixel of a current block an
individual pixel motion vector using in each case for a current
pixel the block motion vector for the current block and the
block motion vectors for the three adjacent blocks, defining
four block motion vectors, which are nearest to that portion of
pixels of the current block to which the current pixel belongs,
wherein said individual pixel motion vector can be different
from said block motion vector associated with the current
block, and wherein each pixel in said current block can have a
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