Appeal No. 2003-0435
Application No. 09/263,921
In reviewing the Greenfield et al. and Wang et al., as discussed supra, we
find the both references teach averaging images, however the references do not
teach averaging images to determine the best match block.
Greenfield teaches a system for compressing video images, Column 1,
lines 6-10. Several different types of pictures are used in the system, one of
which is a “P” or predicted picture, Column 1 line 67 to Column 2 line 5. A block
of pixels in the “P” picture is compared against blocks of pixels in a reference
picture to determine a match, Column 2, lines 11-20. Several searches are
performed using several frames of pictures to produce several candidate best
matches from which the final match is selected, see column 6, lines 59 to
Column 7 line 7 and table 2. Some of the comparisons are to picture frames that
are the average of past and future frames, Column 7, line 49. The differences
between each candidate and the reference block are calculated and the
calculation is used to determine the best match, Column 8, lines 5-14.
Wang et al. also teaches a system for compressing video images where
there is a comparison of blocks of pixels in various images to produce best
matched blocks, column 1 lines 60 to column 2 lines 5 and column 5 lines 1-26.
A best mode generator then determines which best matched block most closely
matches the reference block, column 5, lines 42-44. The best mode generator
can also average two or more best matched blocks, referred to as average
modes, Column 5, lines 49-51. The best mode generator compares the best
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Last modified: November 3, 2007