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Clearly, the scale-map fingerprint cannot always be a more compact description of the signal than the signal itself, unless the signal is redundant in precisely the way that the fingerprint representation can exploit. We expect this to be the case for images, if an appropriate differential operator is used, because images are not a purely random array of numbers. Usually images consist of rather homogeneous regions that do not change much over significant scale intervals
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Clearly, the scale-map fingerprint cannot always be a more compact description of the signal than the signal itself, unless the signal is redundant in precisely the way that the fingerprint representation can exploit. We expect this to be the case for images, if an appropriate differential operator is used, because images are not a purely random array of numbers. Usually images consist of rather homogeneous regions that do not change much over significant scale intervals.
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20 In this case the matrices in Eqs. (3. 3. 1) and (3. 3. 2) take simple forms
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20 In this case the matrices in Eqs. (3. 3. 1) and (3. 3. 2) take simple forms.
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