Kernel "Laplacian" of size 5x5+2+2 with values from -2 to 16
Forming a output range from -16 to 16 (Zero-Summing)
 0:     0     0    -1     0     0
 1:     0    -1    -2    -1     0
 2:    -1    -2    16    -2    -1
 3:     0    -1    -2    -1     0
 4:     0     0    -1     0     0