429 
orientation of the camera, the stereo-plotting machine and the film 
shrinkage must also be taken into consideration. The following for 
mulas are found after inserting the weight coefficients (excluding 
c ) : 
s 0i 2 — 
s o 2 
Q 
<P2<P2 + s h 2 Ônn 
+ 
s l 2 
Qll + 
s ° s 0 W 
+ 
s o*. 
Qr.r. 
C „ 2 
S 0 2 
— Sq 2 Q + s 
2 
h 
Q + s 
, 2 Qrr + 
s'. 
u 2 Q v< i "(■ 
+ s 0 2 
Q<p a 
<p 
a 
( 
h 2 
h 2 
Q 
2h 2 
1 
SO, 2 = 
-- So 2 
b 2 
2*1*1 + b 2 
*2*2 
" b 2 
QKlK‘2 4- 
4 
2 (»2»>2 — 
- — Q 
b 
K l u> 2 
+ 
h 
b 
£*2“ 2 ) + S h 
2 
Q« 
+ Si 2 
2 o)i(i>i ^ : 
M) 2 Qwo) + 
+ s 0 2 Qtj to (20) 
w a ^ a a v ' 
s ü.,~ S 0“ ( Qk 1 k 1 + Qk 2 k 2 
J_o 
j_^2 4" ^ >¿(»20)2 + 
+ , Qk^o>2 Q«2(»2) T Sl h“ Q ££ S| ,. “ Q CO r OJ ^ -(- 
O b 
+ ^O 2 Qo)0) + S 0)l 2 Qw a w a 
where s 0 = the standard error of unit weight in the y-parallax mea- 
s 0 h 
surements, s h = the standard error in the elevation = ~r~, s x the 
standard error of unit weight of the projector coordinates in the left 
projector, s r = do. in the right projector, s' 0 = the standard error of 
unit weight of the image coordinates and s 0 = the standard error of 
unit weight of the fiducial mark coordinates. Corresponding notations 
have been used for the weight coefficients, which are according to 
[19], [16] and (15) 
_ 3h 4 + 3d 4 + 4h 2 d 2 ^ ^ 
2*1*1 = Qk 2 k2 — ÜU9AX ~ y<P2<P2 
5h 2 
Q 
h 2 
2d 4 
i»2<»2 
Qk^(»2 Q^2 w 2 
1 
6b 2 d 4 
3h 3 + 2hd 2 
6bd 4 
Qk'1K2 — 
Q (p lV2 — 
12b 2 d 2 
d 4 + 3h 4 + 4h 2 d 2 
6b 2 d 4 
h 2 
12b 2 d 2 
(21) 
Q™=- 
' ï]ï| 
b 2 
4d 2