Table of Contents 
Introduction ...........…4......-. -+1. 00 0e Heu As 0000 em AR 0100080030 0 ] 
Outline of the Orthophoto Experiment ..........-....++.+++++4++++++<+> 2 
The Test Area 
Control Data 
Test Material and Measuring Techniques Used in Evaluation 
of the Orthophoto ACCUFACY :..--.-..++++--++-++ +0 000000000000 5008 4 
Planimetric Accuracy of Orthophotos .......... ee rrt nnn 8 
Evaluation of Digital Height Information and Drop Lines ............. 14 
Evaluation of Contour Lines 
Time Required for the Various Operations ..........0.000000 0000000000 26 
Comparison of Image Quality .............. err rrt ttt t ntn nt tg 27 
Closing Remarks .....,.......,.0.....0000020000n000 00000200 naar 31