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Fig. 3.
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Schematic of the secondary convolution criterion λ1 ≤ λ2, for the 3D wavelets set in the k∥ vs k⊥ plane. The starting wavelet ψλ1 (black) and the second wavelet ψλ2 probe regions such that μj∥, 2∥ ≤ μj∥, 1∥ and μj⊥, 2⊥ ≤ μj⊥, 1⊥. These wavelets, for the example ψλ1, are shown in the highlighted region (red).
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