Cruz, Santiago
Sobel Operator
me
Im
ge
zes
ed 17.130
nt, EE Kernel:Upper Horizontal
ge atit
1111-1 ALL :
| 111 31511 |
| ilii eiii
| '. | Kernel: Kernel:
| Left Vert. Right Vert.
TT
17311 :
CT Kernel:Lower Horizontal
of NS
is
st
of
es
y.
th : : ; : : : ;
Figure 2. Linear line detecting templates (Prewitt filters) and comparison with Sobel operator for edge extraction.
be
or Selec :
2) Image: E \RSINOL50\/magenes\precal Za tit |
re
ly Size: [97 column x 533 rows |
n TDGEidow) ||
[Catumn =: 30-834 rows:35- 67 |
Select | view | |
d EDGE 2 (Right)
or [column ;B41- BEG — rows: /2- 587 |
is Sel | View |
or EDGE 3 (Upper)
s [oum :32.8M rows: 596 7]
|
t) Select | View |
EDGE 4 (Left)
i = [Estumn “2-25 rows:63- 594 |
1€ ; : image Coordinates : Tu eee
1s | OK | Hep | |Coumn 874rows:484 Select | View —
2)
e |
Figure 3. Selections of search areas for format edges. Main window of the non-metric images inner orientation program
under I.D.L. 5.0.
|
International Archives of Photogrammetry and Remote Sensing. Vol. XXXIII, Part B5. Amsterdam 2000. 151