TWO-DIMENSIONAL PYRAMID FILTER ARCHITECTURE

Implementations of a two-dimensional pyramid filter are disclosed including a two-dimensional pyramid filter architecture of an order 2N−1, where N is a positive integer greater than three. The two-dimensional pyramid filter architecture of order 2N−1 may include one-dimensional pyramid filters of order 2N−1, a first summer circuit; and a second summer circuit. The two dimensional pyramid filter architecture of order 2N−1 may produce, in operation on respective clock cycles, at least a pyramid filtered output signal corresponding to the summation by the first summer circuit of output signals produced by four one-dimensional pyramid filters of order 2N−1, and a pyramid filtered output signal corresponding to an output signal produced by summing signal sample matrices of order [2(N−1)−1] in the second summer circuit. The respective pyramid filtered output signals of the two dimensional pyramid filter architecture may be summed by the third summer circuit on respective clock cycles.