; Table 
m WG 1: 
S17 = 
) WG 2 
on 
WG 3: 
WG 4: 
WG 5: 
1. Terms of Reference of the Working Groups 
Identification and Elimination of Gross and. Systematic Errors 
Detection and localization (identification) of gross errors 
Compensation of systematic errors : ; 
Beliability of photogrammetric point determination (aerotriangulation) 
On-Line Photogrammetric Triangulation 
Further development of recursive methods for dynamic least squares 
adjustment of data 
Studies of those operational aspects which can reduce the volume of 
preparatory work and increase the cost-effectiveness of triangulation 
Quality contro! in the environment of on-line photogrammetric triangu- 
lations 
Mathematical Aspects of Digital Terrain Information 
A comparative test to study sampling-interpolation-accuracy of photo- 
grammetrically measured DEMs 
Mathematical methods to classify types of terrain as to its elevation 
Mathematical Aspects of Image Registration, Rectification and Enhance- 
ment 
Generation, distribution and analysis of standard test data 
Image control point determination 
Image registration 
Image resampling 
Reconstruction of irregularly sampled scenes 
Mathematical models for geometric restitution 
Utilization of multiple coverage 
Integration of multiple data types 
Radiometric correction 
Image enhancement 
Data processing methods 
Mathematical Pattern Recognition and Image Analysis 
Image enhancement 
Image data compression and coding 
Classification and clustering 
Spatial feature. recognition 
Change quantization 
Analysis of binary images 
Use of image analysis techniques with non-image data 
Digital processing of synthetic aperture radar signal histories 
Image based digital information systems 
Computer science aspects of image processing mathematics 
Generation of synthetic images