The wWavelet tTransform has many properties such Multi-resolution, Critical sampling, and Localization. Als wello, additional properties are provided by CT, such Directionality and Anisotropy [12]. In Contourlet, a discrete-domain multi-resolution and multi-direction expansion construct usinges non-separable filter banks, in much the same way that wavelets were derived from filter banks. Also, the high frequency sub-bands doare not exposed to the down sampling process as what occurs in wavelet, that makes the high frequency scrambled.

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