Programming problem: Synthsizable filter design in C++

Problem statement: Develop a synthesizable C/C++ function which is capable of performing image filtering. The filtering operation is defined by following equation:

// B -> filtered image

// A -> Input image

// h -> filter coefficients

int filter_func() {

                const int L = 1;

                const int x_size = 255;

                const int y_size = 255;

                int A_image[x_size][y_size];

                int B_image[x_size][y_size];

                int h[2*L+1][2*L+1];

                // Initializing the filtered image

                for (int i = 0; i < x_size; i++) {

                                for (int j = 0; j < y_size; j++) {

                                                B_image[i][j] = 0;

                                }

                }

                for (int i = 0; i < x_size; i++) {

                                for (int j = 0; j < y_size; j++) {

                                                for (int l = -L; l <= L; l++) {

                                                                for (int k = -L; k <= L; k++) {

                                                                                B_image[i][j] = B_image[i][j] + A_image[i-k][j-l]*h[k+L][l+L];

                                                                }

                                                }

                                }

                }

}

Hope you’ve found this post useful. Let us know what you think in the comments.