THE INFLUENCE OF DATA PROCESSING ON 
PHOTOGRAMMETRIC INSTRUMENTS 
by 
John Sharp 
Systems Development Division 
IBM Corporation 
Kingston, N. Y. 
Introduction 
The purpose of this paper is to summarize progress of general 
purpose data processing where it directly relates current develop- 
ment of equipment allied to photogrammetric instrumentation. 
Review 
Digital data processing techniques have been allied with 
photogrammetric instrumentation for almost 20 years. The earliest 
work I can recall was the use of unit record equipment for digital 
ray tracing in the design of aerial camera and other lenses in 
the late 1940's and early 50's. The initial work on automatic 
Stereomapping began shortly thereafter. Mr. W. C. Cude summarized 
this work, starting in 1950 and proceeding up to 1962, 710 In 
the latter year, he reported three developmental approaches to 
automatic mapping -- the Stereomat, an analog approach; the 
Unimace, a hybrid digital control approach; and, the DAMC, a 
general purpose digital computer approach. A continuation of 
the general-purpose approach has been continued at IBM 
Kingston. A1» Arb, Ar]