def koponging(bw):
bwr = bw.copy()
# remove filler
rollup, rolldown, rollleft, rollright = nph.roll_all(bwr)
bwr -= bwr * rolldown * rollup * rollright * rollleft
# remove zigzag
rollup, rollright = nph.roll_up(bwr), nph.roll_right(bwr)
rolldownleft = nph.roll_left(nph.roll_down(bwr))
bwr -= bwr * rollup * rollright * (rolldownleft == False)
rollright, rolldown = nph.roll_right(bwr), nph.roll_down(bwr)
rollupleft = nph.roll_left(nph.roll_up(bwr))
bwr -= bwr * rollright * rolldown * (rollupleft == False)
rolldown, rollleft = nph.roll_down(bwr), nph.roll_left(bwr)
rollupright = nph.roll_right(nph.roll_up(bwr))
bwr -= bwr * rolldown * rollleft * (rollupright == False)
rollleft, rollup = nph.roll_left(bwr), nph.roll_up(bwr)
rolldownright = nph.roll_right(nph.roll_down(bwr))
bwr -= bwr * rollleft * rollup * (rolldownright == False)
return bwr
def get_identity(tulang):
rollup, rolldown, rollleft, rollright = nph.roll_all(tulang)
rollupleft = nph.roll_left(rollup)
rollupright = nph.roll_right(rollup)
rolldownleft = nph.roll_left(rolldown)
rolldownright = nph.roll_right(rolldown)
neighbors = tulang.astype(np.uint8)*(0+rollup+rolldown+rollleft+rollright+rollupleft+rollupright+rolldownleft+rolldownright)
ujung_nonzero = (neighbors == 1).nonzero()
simpangan_nonzero = (neighbors > 2).nonzero()
ujung = []
for i in range(0, ujung_nonzero[0].shape[0]):
ujung.append((ujung_nonzero[0][i], ujung_nonzero[1][i]))
simpangan = []
for i in range(0, simpangan_nonzero[0].shape[0]):
simpangan.append((simpangan_nonzero[0][i], simpangan_nonzero[1][i]))
# remove redundant simpangan
i = 0
while i < len(simpangan):
yi, xi = simpangan[i]
j = i+1
while j < len(simpangan):
yj, xj = simpangan[j]
if yi-1 <= yj <= yj+1 and xi-1 <= xj <= xi+1:
simpangan.pop(j)
j -= 1
j += 1
i += 1
return (ujung, simpangan)
