Optical Coherence Tomography Noise Reduction Using Anisotropic Local Bivariate Gaussian Mixture Prior in 3D Complex Wavelet Domain
Figure 15
A comparison between subbands of DWT and DCWT. (a) The wavelets in the space domain (LH, HL, and HH). (b) The idealized support of the Fourier spectrum of each wavelet in the 2D frequency domain. We can see the checkerboard artifact of the third wavelet. (c) The complex wavelets in the space domain. (d) The idealized support of the Fourier spectrum of each wavelet in the 2D frequency plane. The absence of the checkerboard phenomenon is observed in both the space and frequency domains [48].
