Fast block implementation of two-dimensional FIR digital filters via the Walsh–Hadamard decomposition
B.G. Mertzios, A.N. Venetsanopoulos · International Journal of Electronics · 1990
The block implementation of two-dimensional finite-impulse response (FIR) digital filters is considered using the matrix decomposition approach. The coefficient matrix of the block realization is decomposed via the Walsh-Hadamard transform without involving any intermediate calculations. The resulting structure is modular, regular, has high inherent parallelism and may be easily pipelined so that it may be implemented via very large scale integration array processors.