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17 
BRISTOL UNIVERSITY. Dept. of Geography 
There have been staff researches involving normal remote sensing from 
aircraft with possible extensions in the offing to satellite sensors; also some 
specialisation in satellite climatology. 
CAMBRIDGE UNIVERSITY. Committee for Aerial Photography 
During the period under review the committee has sponsored regular 
programmes of aerial photography to provide material to assist in teaching and 
research. 
CAMBRIDGE UNIVERSITY. Dept. of Medical Photography 
Addenbrooke's Hospital 
The hospital has developed a photogrammetric procedure for the 
measurement and study of the human face. (15). A special instrument has been 
constructed for this work incorporating a pair of multiplex 
projectors. This instrument is used both for exposing the photographs and 
for their subsequent measurement. More recently a portable stereometric 
camera has been designed and built, which may be taken to the patient and used 
more conveniently for obtaining the photography. 
CARTOGRAPHIC ENGINEERING LTD 
This company is initially concerned with the design, development and 
manufacture of a new plotting instrument known as the CPI based on principles 
formulated by Professor E H Thompson at University College London. The 
instrument has reached production stage, and deliveries to customers started in 
1971. Work is also in hand on the design and development of specialist 
photogrammetric equipment to deal with plotting and profiling from 35 mm 
photographs. A prototype of this instrument will be available for trials in 1972. 
CASELLA (LONDON) 
The firm continues to produce its stereoscopes and related equipment. 
DIRECTORATE OF OVERSEAS SURVEYS 
The Director of Overseas Surveys has developed aerial triangulation by the 
observation of independent models (23, 74, 202) into a full production method, 
including block adjustment. Investigations have continued into the accuracy of 
this technique, particularly into the method of calculating perspective centre 
co-ordinates (24). 
Direct scribing of contours on Kern PG2 plotters has been developed into a 
standard technique. Pantographs have been added to Multiplex plotters to 
permit plotting at reproduction scale and development is in hand to improve the 
illumination in these plotters by the use of quartz bulbs. Techniques are being 
developed to use Multiplex plotters for plotting trimetrogon photography of the 
Antarctic.