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swCHIP 1991 January
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swCHIP_95-1.bin
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demo
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wit4711
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lib
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pyramid
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burt.
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burt.bin
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1995-12-09
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OPERATOR
burt --- generate a pyramid using Burt method
DESCRIPTION
The burt operator generates a sequence of n images I(i) such that image I(n)
is the result of applying n reduce operations to the input image. All other
images, I(i) where i ranges between 1 and n-1 , are differences between the
input image after i-1 reduce operations and the expanded version of the input
image after i reduce operations. Notationally,
Let G[1] be the input image.
Let G[i] denote an image sequence where G[i] = reduce(G[i-1])
Then I[i] = G[i] - expand(reduce(G[i])).
Unless i == n, then I[n] = G[n].
The filter parameter selects the type of gaussian filter to be applied.
Currently, the user cannot define his own filters. The effect of each filter
is described in the WIT filter library during the discussion of the gauss
operator. The minsize parameter defines the minimum size that an image G(i)
can be before a reduce operation will not be performed and pyramid generation
will terminate.