Table of Contents 
Page 
ACKNOWLEDGEMENTS 5 
1. INTRODUCTION 5 
1.1 Program of the work performed within the Intercommissional Working 
Group 7 
2. BASIC CONCEPTS AND TERMINOLOGY FOR QUALITY PROBLEMS 
OF PHOTOGRAMMETRY 8 
2.1 The Concepts and Terms Precision and Accuracy 9 
2.2 The Concepts and Terms Deviation and Error 10 
2.3 The Concept of Weight 11 
2.4 Summary 11 
3. GEOMETRICAL QUALITY OF PHOTOGRAPHS 12 
3.1 Partial Calibration of Photographs and Cameras 12 
3.11 Results of Partial Calibrations of Aerial Photographs 16 
3.12 Results of Partial Calibrations of Terrestrial Photographs 20 
3.2 Complete Calibrations of Photographs 25 
3.21 Complete Laboratory Calibrations of Photographs from Aerial Cameras 25 
3.22 Complete Calibrations of Photographs from Terrestrial Cameras, Using 
Three-Dimensional Test Fields 27 
4. GEOMETRICAL QUALITY OF RESTITUTION INSTRUMENTS IN 
PHOTOGRAMMETRY 27 
4.1 Comparators 27 
4.11 Stereo-micrometers (Parallax bars) 29 
4.2 Stereoscopic Projection Instruments 30 
4.21 Partial Calibration of Individual Projectors 30 
4.22 Complete Calibration of Individual Projectors 31 
5. TESTS OF THE STEREOSCOPIC ACUITY OF OPERATORS 44 
6. SUMMARY AND CONCLUSIONS 44