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 iathick(f, Iab=None, n=-1, theta=45, DIRECTION="CLOCKWISE"):
from ia870.iaisbinary import iaisbinary
from ia870.iaintersec import iaintersec
from ia870.iasupgen import iasupgen
from ia870.iainterot import iainterot
from ia870.iaunion import iaunion
from ia870.iaisequal import iaisequal
from ia870.iahomothick import iahomothick
if Iab is None:
Iab = iahomothick()
DIRECTION = DIRECTION.upper()
assert iaisbinary(f), 'f must be binary image'
if n == -1: n = product(f.shape)
y = f
zero = iaintersec(f, 0)
for i in range(n):
aux = zero
for t in range(0, 360, theta):
sup = iasupgen(y, iainterot(Iab, t, DIRECTION))
aux = iaunion(aux, sup)
y = iaunion(y, sup)
if iaisequal(aux, zero): break
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 iacdil(f, g, b=iasecross(), n=1):
from ia870.iaintersec import iaintersec
from ia870.iadil import iadil
from ia870.iaisequal import iaisequal
y = iaintersec(f, g)
for i in range(n):
aux = y
y = iaintersec(iadil(y, b), g)
if iaisequal(y, aux): break
return y
def iacero(f, g, b=iasecross(), n=1):
from ia870.iaunion import iaunion
from ia870.iaero import iaero
from ia870.iaisequal import iaisequal
y = iaunion(f, g)
for i in range(n):
aux = y
y = iaunion(iaero(y, b), g)
if iaisequal(y, aux): break
return y
def iais(f1, oper, f2=None, oper1=None, f3=None):
from ia870.iaisbinary import iaisbinary
from ia870.iaisequal import iaisequal
from ia870.iaislesseq import iaislesseq
from ia870.ianeg import ianeg
from ia870.iathreshad import iathreshad
from ia870.iabinary import iabinary
if f2 == None:
oper=oper.upper();
if oper == 'BINARY': return iaisbinary(f1)
elif oper == 'GRAY' : return not iaisbinary(f1)
else:
assert 0,'oper should be BINARY or GRAY, was'+oper
elif oper == '==': y = iaisequal(f1, f2)
elif oper == '~=': y = not iaisequal(f1,f2)
elif oper == '<=': y = iaislesseq(f1,f2)
elif oper == '>=': y = iaislesseq(f2,f1)
elif oper == '>': y = iaisequal( ianeg( iathreshad(f2,f1)),iabinary(1))
elif oper == '<': y = iaisequal( ianeg( iathreshad(f1,f2)),iabinary(1))
else:
assert 0,'oper must be one of: ==, ~=, >, >=, <, <=, it was:'+oper
if oper1 != None:
oper1 = oper1.upper()
if oper1 == '==': y = y and iaisequal(f2,f3)
elif oper1 == '~=': y = y and (not iaisequal(f2,f3))
elif oper1 == '<=': y = y and iaislesseq(f2,f3)
elif oper1 == '>=': y = y and iaislesseq(f3,f2)
elif oper1 == '>': y = y and iaisequal( ianeg( iathreshad(f3,f2)),iabinary(1))
elif oper1 == '<': y = y and iaisequal( ianeg( iathreshad(f2,f3)),iabinary(1))
else:
assert 0,'oper1 must be one of: ==, ~=, >, >=, <, <=, it was:'+oper1
return y
def iacthin(f, g, Iab=None, n=-1, theta=45, DIRECTION="CLOCKWISE"):
from ia870.iaisbinary import iaisbinary
from ia870.iasupgen import iasupgen
from ia870.iainterot import iainterot
from ia870.iaunion import iaunion
from ia870.iasubm import iasubm
from ia870.iaisequal import iaisequal
from ia870.iahomothin import iahomothin
if Iab is None:
Iab = iahomothin()
DIRECTION = DIRECTION.upper()
assert iaisbinary(f), 'f must be binary image'
if n == -1: n = product(f.shape)
y = f
old = y
for i in range(n):
for t in range(0, 360, theta):
sup = iasupgen(y, iainterot(Iab, t, DIRECTION))
y = iaunion(iasubm(y, sup), g)
if iaisequal(old, y): break
old = y
return y