iDCT3D Inverse Discrete Cosine Transform 3-Dimensional

Implements the discrete cosine transform according to \(x_k = \mathcal{F}^{-1}(X)_k = X_0 + 2\sum_{n=0}^{N-1} X_n cos\left[ \frac{\pi n(2k+1)}{2N} \right], \forall k \in \{0, \dots, N-1 \}\).

Arguments: - N1: int, specifying the first dimension; - N2: int, specifying the second dimension; - N3: int, specifying the third dimension;

Methods: - call: returns the spatial representation of the input; - get_config: returns a dictionary with the configuration needed to serialize the layer; - from_config: returns a iDCT3D instanced class with the configuration received;