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Figure: Galaxy NGC2297
We have seen that the wavelet transform furnishes a number of data
which depends on the algorithm used. We distinguish three classes of
algorithms:
- those which do not reduce the sampling. The number of wavelet
coefficients is equal to the number of pixels of the image multiplied
by the number of scales. This is the case if we use the à
trous algorithm.
- those which furnish a pyramidal set of data
- those which furnish an image
In the following, we present how the galaxy (figure 
)
can be represented in the wavelet space.
Rein Warmels
Mon Jan 22 15:08:15 MET 1996