TABLE 2.3.3 Resulting residuals obtained through the application 
of the algorithm, for the 1st model, with the data of 
table 2.3.1 affected by 50um errors in x, y 
coordenates. 
RESIDUALS 
POINT x (mm) y (mm) x (mm) y (mm) Y (mm) 
101 0.000 -0.009 0.000 0.008 -0.017 
102 0.000 -0.008 0.000 0.008 -0.016 
109 0.000 -0.001 0. 000 0.000 -0.001 
117 0.000 -0.002 0.000 0.002 -0.004 
124 0.000 0.002 0.000 -0.003 0.005 
131 0. 000 -0.001 0.000 0.000 -0. 001 
132 0.000 0.001 0.000 0.000 0.001 
167* 0.000 0.017 0.000 -0.017 0.034 
169 0. 000 -0.001 0.000 0. 001 -0. 002 
go? = 1,0 Go? = 25,2 
* Point with gross error in x, y photocoordinates of L photo. 
From the second model on, constraints are imposed to the previous 
and actual model coordinates of points commom to adjacent models, to 
define scale for the actual model. Consenquently detection of gross 
errors in x coordinates of points located at the overlapping region 
of models become also possibilite. Table 2.3.4 illustrates this 
possibility. 
TABLE 2.3.4 Resulting residuals from the application of the 
algorithm to the second model, where x coordinate is 
affected by 100um gross error. 
RESIDUALS PHOTO R DIFFERENCES 
POINT x (mm) y(mm) x (mm) y(mm) x(mm) y(mm) 
102 0.000 0.000  -0.023 - -0,009 0.023 : 0. 009 
103 0.000 -0.003 0.000 0.004 0.000 -0.007 
110 0.000  -0.003 0.000 0.003 0.000 -0.006 
111 0.000 -0.000 0.000 0.003 0.000 0.003 
117* 0.000 0.002 0.043 0.011 -0.043 -0.009 
118 0. 000 0.002 -0.000  -0.002 0.000 0.003 
125 0.000 0.000 0.000 0.000 0.000 0.000 
132 0.000 -0.002  -0.024 0.002 0.024 -0.004 
133 0.000 0.008 -0.000  -0.008 0.000 0.017 
so? s 1,0 so? = 32,2 
* Point with gross error in X photocoordinate of L photo 
- 447 -