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The APEX Method in Image Sharpening and the Use of Low Exponent Lévy Stable Laws
2003
SIAM Journal on Applied Mathematics
The APEX method is an FFT-based direct blind deconvolution technique that can process complex high resolution imagery in seconds or minutes on current desktop platforms. The method is predicated on a restricted class of shift-invariant blurs that can be expressed as finite convolution products of two-dimensional radially symmetric Lévy stable probability density functions. This class generalizes Gaussian and Lorentzian densities but excludes defocus and motion blurs. Not all images can be
doi:10.1137/s0036139901389318
fatcat:ez2e2sbmlndn7nub2nwau2z36a