Inverse Discrete Cosine Transform - unix4lyfe.org

Inverse Discrete Cosine Transform To rebuild an image in the spatial domain from the frequencies obtained above, we use the IDCT: $$ S_{yx} = \frac{1}{4} \sum_{v=0}^{N-1} \sum_{u=0}^{N-1} C_v C_u F_{vu} cos\left(v\pi\frac{2y+1}{2N}

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