acquisition, digital techniques, low cost systems and the future of architectural photogrammetry are concerned. This session stimulated a lively discussion from the audience. The technical part of the symposium was concluded by the approval of a resolution, proposed by the Committee, recommending the intensification of international efforts for documenting, recording and salvaging mankind's cultural heritage.

A. GEORGOPOULOS, National Technical University of Athens

TRAINING SEMINAR ON

ARCHITECTURAL PHOTOGRAMMETRY THE SEMINAR was organised by ISPRS Commissions V and VI on 30th September and 1st October, 1991 in conjunction with the XIV CIPA Symposium, which took place in Delphi, Greece from 2nd to 5th October, 199 1. The Course Directors were Dr. A Georgopoulos, Commission VI Secretary and Mr. R. W. A. Dallas, Chairman of WG V/5 on Photogrammetry in Architecture and Archaeology. The Seminar took place in the premises of the Department of Rural and Surveying Engineering of the National Technical University of Athens.

It was a two day intensive workshop covering basic photogrammetric theory and practice as applied to architectural photogrammetry. Experts from all over Europe presented and discussed techniques for recording and analysing architec- tural monuments, image geometry, camera types and layout, control, plotting and digital handling of data. Special emphasis was given to simplified techniques such as rectification, use of amateur cameras and modem analytical and digital approaches to the problem of architectural surveys. The workshop was supported by practical exercises, which enabled the participants to acquire experience in the techniques presented.

This training seminar was specially designed for architects and archaeologists involved in conservation or monument recording projects, for surveyors with limited experience in architectural photogrammetry, for lecturers introducing this area of study and in general for everyone involved in the subject. No past experience with photogrammetry was required. Hence the 26 interested partici- pants (including seven observers) from five countries were mostly architects from state or private institutions.

The morning sessions were devoted to theoretical presentations and the afternoons to the practicals. The whole of the instrumentation of the Laboratory of Photogrammetry was available. It comprised two analogue stereoplotters (Zeiss Stereoplanigraph C8 and Technocart), a Zeiss (Oberkochen) Stereocord G2 interfaced with a PC, a Calcomp A0 digitiser connected to AutoCAD and a system of digital rectification under development. In addition Infotop Ltd, the local Leica representatives, had offered a Leica DVP, an Elcovision 10 and an Adam MPS-2 analytical plotter.

The general feeling was that the seminar was well organised and stimulated the interest of the participants. On the second evening, all lecturers and participants in the seminar were invited to a reception by the Mayor of Athens in the Town Hall together with the CIPA Committee members. Considering the appeal and success of this effort, similar seminars should be organised more frequently in the future.

A. GEORGOPOULOS, National Technical University of Athens

I33