measure. The existing measure is just the maximum of the posteriori 
measure for a certain procedure of parameter selection or a given 
function for determining weights. The posteriori reliability 
measure require$ little additional amount of computation, so is also 
feasible to be used in practice. Formula (14) and (16) can be used 
to compute the posteriori reliability measure in the case of . 
adopting robust methods. The derivation of the formulai unciis 
that finding the explicit relation between the final weights and the 
least squares estimators of additional parameters obtained from the 
preliminary adjustment may be the key to translating the existing 
reliability theory wholly to the case of using robust methods. 
The paper has set forth its conceptions only for the simplified 
cases. Their extension to more general cases is left for the 
forthcoming papers. 
REFERENCES 
/1/ Ackermann, F.: Block Adjustment with Additional Parameters. 
Photogrammetria, Vol. 36, (1981), pp. 217-227. 
/2/ Förstner, W.: Evaluation of Block Adjustment Results. 
ISP, Comm.3, Hamburg, (1980). 
/3/ Forstner, W.: Zur Priifung zusätziicher Parameter in 
Ausgléichungen. 
2FPV, Vol.11,:. (1980), pp. 510-519. 
/^/ Huang, Y.D.: More Remarks on Self-calibration. 
ISPRS, Comm.5, Symposium Ottawa, (1986). 
/5/ Kubik, K.; Weng, W. and Frederiksen, P.: Oh, Grosserrors ! 
ISPRS, Comm.3, Rio. (1984). Invited Paper. 
/6/ Molenaar, M.: The Present Status of the Theory for the 
Evaluation of the Quality of Photogrammetric 
Point Determination. 
ISPRS, Comm.3, Rio. (1984), Invited Paper. 
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