def iaskelm(f, B=iasecross(), option="binary"):
from ia870.iaisbinary import iaisbinary
from ia870.ialimits import ialimits
from ia870.iagray import iagray
from ia870.iaintersec import iaintersec
from ia870.iasesum import iasesum
from ia870.iaero import iaero
from ia870.iaisequal import iaisequal
from ia870.iaopenth import iaopenth
from ia870.iasedil import iasedil
from ia870.iaunion import iaunion
from ia870.iabinary import iabinary
from ia870.iapad import iapad
from ia870.iaunpad import iaunpad
assert iaisbinary(f),'Input binary image only'
option = option.upper()
f = iapad(f,B)
print(f)
k1,k2 = ialimits(f)
y = iagray( iaintersec(f, k1),'uint16')
iszero = asarray(y)
nb = iasesum(B,0)
for r in range(1,65535):
ero = iaero( f, nb)
if iaisequal(ero, iszero): break
f1 = iaopenth( ero, B)
nb = iasedil(nb, B)
y = iaunion(y, iagray(f1,'uint16',r))
if option == 'BINARY':
y = iabinary(y)
y = iaunpad(y,B)
return y
def iaopentransf(f, type='OCTAGON', n=65535, Bc=iasecross(), Buser=iasecross()):
from ia870.iaisbinary import iaisbinary
from ia870.iabinary import iabinary
from ia870.iaisequal import iaisequal
from ia870.iaopen import iaopen
from ia870.iasesum import iasesum
from ia870.iasedisk import iasedisk
from ia870.iaaddm import iaaddm
from ia870.iagray import iagray
from ia870.iagrain import iagrain
from ia870.ialabel import ialabel
assert iaisbinary(f),'Error: input image is not binary'
type = type.upper()
rec_flag = (type).find('-REC')
if rec_flag != -1:
type = type[:rec_flag] # remove the -rec suffix
flag = not ((type == 'OCTAGON') or
(type == 'CHESSBOARD') or
(type == 'CITY-BLOCK'))
if not flag:
n = min(n,min(f.shape))
elif type == 'LINEAR-H':
se = iabinary([1, 1, 1])
n = min(n,f.shape[1])
elif type =='LINEAR-V':
se = iabinary([[1],[1],[1]])
n = min(n,f.shape[0])
elif type == 'LINEAR-45R':
se = iabinary([[0, 0, 1],[0, 1, 0],[1, 0, 0]])
n = min(n,min(f.shape))
elif type == 'LINEAR-45L':
se = iabinary([[1, 0, 0],[0, 1, 0],[0, 0, 1]])
n = min(n,min(f.shape))
elif type == 'USER':
se = Buser
n = min(n,min(f.shape))
else:
#print('Error: only accepts OCTAGON, CHESSBOARD, CITY-BLOCK, LINEAR-H, LINEAR-V, LINEAR-45R, LINEAR-45L, or USER as type, or with suffix -REC.')
print('Error')
return []
k = 0
y = uint16(zeros(f.shape))
a = iabinary([1])
z = iabinary([0])
while not ( iaisequal(a,z) or (k>=n)):
print('processing r=',k)
if flag:
a = iaopen(f,iasesum(se,k))
else:
a = iaopen(f,iasedisk(k,'2D',type))
y = iaaddm(y, iagray(a,'uint16',1))
k = k+1
if rec_flag != -1:
y = iagrain( ialabel(f,Bc),y,'max')
return y
def iagdist(f, g, Bc=iasecross(), METRIC=None):
from ia870.ianeg import ianeg
from ia870.iagray import iagray
from ia870.iaintersec import iaintersec
from ia870.iaisequal import iaisequal
from ia870.iacero import iacero
from ia870.iaaddm import iaaddm
from ia870.iaunion import iaunion
assert METRIC is None, 'Does not support EUCLIDEAN'
fneg, gneg = ianeg(f), ianeg(g)
y = iagray(gneg, 'uint16', 1)
ero = iaintersec(y, 0)
aux = y
i = 1
while (ero != aux).any():
aux = ero
ero = iacero(gneg, fneg, Bc, i)
y = iaaddm(y, iagray(ero, 'uint16', 1))
i = i + 1
y = iaunion(y, iagray(ero, 'uint16'))
return y
def iatoggle(f, f1, f2, OPTION="GRAY"):
from ia870.iabinary import iabinary
from ia870.iasubm import iasubm
from ia870.iagray import iagray
from ia870.iaunion import iaunion
from ia870.iaintersec import iaintersec
from ia870.ianeg import ianeg
y = iabinary(iasubm(f, f1), iasubm(f2, f))
if OPTION.upper() == 'GRAY':
t = iagray(y)
y = iaunion(iaintersec(ianeg(t), f1), iaintersec(t, f2))
return y
def iainpos(f, g, bc=iasecross()):
from ia870.iaisbinary import iaisbinary
from ia870.iagray import iagray
from ia870.ianeg import ianeg
from ia870.iadatatype import iadatatype
from ia870.ialimits import ialimits
from ia870.iasuprec import iasuprec
from ia870.iaintersec import iaintersec
from ia870.iaunion import iaunion
assert iaisbinary(f), 'First parameter must be binary image'
fg = iagray(ianeg(f), iadatatype(g))
k1 = ialimits(g)[1] - 1
y = iasuprec(fg, iaintersec(iaunion(g, 1), k1, fg), bc)
return y