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Title: Methods for performing fast discrete curvelet transforms of data

Patent ·
OSTI ID:1014730

Fast digital implementations of the second generation curvelet transform for use in data processing are disclosed. One such digital transformation is based on unequally-spaced fast Fourier transforms (USFFT) while another is based on the wrapping of specially selected Fourier samples. Both digital transformations return a table of digital curvelet coefficients indexed by a scale parameter, an orientation parameter, and a spatial location parameter. Both implementations are fast in the sense that they run in about O(n.sup.2 log n) flops for n by n Cartesian arrays or about O(N log N) flops for Cartesian arrays of size N=n.sup.3; in addition, they are also invertible, with rapid inversion algorithms of about the same complexity.

Research Organization:
California Institute of Technology (CalTech), Pasadena, CA (United States); Stanford University (Palo Alto, CA)
Sponsoring Organization:
USDOE
DOE Contract Number:
FG02-02ER25529
Assignee:
California Institute of Technology (Pasadena, CA); Stanford University (Palo Alto, CA)
Patent Number(s):
7,840,625
Application Number:
US Patent Application 11/400,048
OSTI ID:
1014730
Country of Publication:
United States
Language:
English

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