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Shiftable multiscale transforms

Simoncelli, E.P., Freeman, W.T., Adelson, E.H., Heeger, D.J.·1992·IEEE Transactions on Information Theory

Abstract

One of the major drawbacks of orthogonal wavelet transforms is their lack of translation invariance: the content of wavelet subbands is unstable under translations of the input signal. Wavelet transforms are also unstable with respect to dilations of the input signal and, in two dimensions, rotations of the input signal. The authors formalize these problems by defining a type of translation invariance called shiftability. In the spatial domain, shiftability corresponds to a lack of aliasing; thus, the conditions under which the property holds are specified by the sampling theorem. Shiftability may also be applied in the context of other domains, particularly orientation and scale. Jointly shiftable transforms that are simultaneously shiftable in more than one domain are explored. Two examples of jointly shiftable transforms are designed and implemented: a 1-D transform that is jointly shiftable in position and scale, and a 2-D transform that is jointly shiftable in position and orientation. The usefulness of these image representations for scale-space analysis, stereo disparity measurement, and image enhancement is demonstrated.>

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Metadata

Authors
Simoncelli, E. P., Freeman, W. T., Adelson, E. H., & Heeger, D. J.
Venue
IEEE Transactions on Information Theory
Published
1992-03
Volume
38
Issue
2
Pages
587-607
ISSN
  • 0018-9448 (ISSN-L)
  • 1557-9654
OpenAlex
W2107790757
Cited by
1,333
References
4
FWCI
18.74
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Shiftable multiscale transforms. https://app.cochat.ai/papers/10.1109/18.119725
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Simoncelli, E. P., Freeman, W. T., Adelson, E. H., & Heeger, D. J. (1992). Shiftable multiscale transforms. IEEE Transactions on Information Theory. https://doi.org/10.1109/18.119725

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