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Curvelets on various scales, directions, and translations in spatial domain (left) and their log magnitude spectra (right).
(Color online) Denoising of a surface. From the left upper corner to the right lower corner: (a) original surface (scale unit: ), (b) noisy surface , (c) denoised surface by “db4” wavelet , and (d) denoised surface by the proposed method .
Extracted scratches using wavelet transform (left) and TV-synthesis curvelet transform (right).
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