PIXEL
NEIGHBORHOOD
PIXEL
CONNECTIVITY
MAP
TYPE
Oil
Exterior
A
0A1
11000111
Contour
Oil
Pixel
111
Interior
B
IBI
01111111
Pixel
110
000
Arc
C
oco
01000000
Endpoint/
010
Maxima
000
External
D
ODO
11100000
Contour
111
Maxima
010
Collapsing
E
0E0
11000100
Arc
Oil
111
External
F
1F0
00011110
Contour
000
Minima
110
External
G
1G0
00011100
Contour
000
Minima
111
Hole
H
1H1
10111111
Maxima
101
10X
Hole
I
1IX
X01110XX
Maxima
10X
001
Hole
J
1J1
10010011
Minima
001
Figure 1. Bilevel Image
478