Scanning interval, increased bits per pixel are "wasted" on noise without 
any improvement in usable dynamic range, while a refined sampling interval 
results in increased noise and no overall gain in geometric precision. 
This fact underscores the importance of error and noise analysis in the 
design of a digital image system. 
REFERENCES 
[11 Wolfgang Forstner. On the Geometric Precision of Digital Correlation; 
Proceedings of the Symposium on Mathematical Models, Accuracy Aspects 
and Quality Control, ISPRS Commission III June 7-11, 1982. 
[2] V.K.V. Kumar, Casasent and Murakami.  Principal-Component Imagery for 
Statistical Pattern Recognition Correlators, Optical Engineering, 
Vol..21, No. 1, 1982; 
[3] TA. Ryan, R.T. Cray, B.R. Hunt, rediction of Correlation Errors in 
Stereo Pair Images, Optical Engineering, Vol. 19, No. 3, 1980. 
[4] A.V. Oppenheim, R.W. Schafer. Digital Signal Processing, Prentice- 
Hall,.1975.