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K. G. LOFSTROM MEMORIAL LECTURE 
CAMERA ORIENTATION DATA FOR AERIAL TRIANGULATION 
F. Ackermann 
Stuttgart University 
Stuttgart, FRG 
ABSTRACT 
The paper is dedicated with great reverence to the late 
Karl Lófstróm. Respect is paid to his impressive personality 
and his professional status and achievements. Starting from 
Lofstrom's early work with statoscope and horizon camera 
the development of "auxiliary data" for camera orientation 
and their use in photogrammetry, in particular in aerial 
triangulation, is reviewed. Analyzing the most recent deve- 
lopment in navigation techniques a major break through is 
envisaged which will soon revolutionize aerial triangulation 
and photogrammetric orientation methods in general. Some 
simulation results are presented which substantiate the high 
expectations. High precision navigation data will also 
fundamentally influence the metric capabilities and open up 
application of linear array cameras, of microwave scanners 
and of laser profiling for mapping and digital terrain mo- 
delling of which the far reaching implications are outlined. 
1. IN MEMORIAM KARL LOFSTRUM 
This lecture is dedicated to the memory of Karl Gunnar 
Mathias Lófstróm, Dr. techn. h. c., retired Major General, 
who passed away on August 14, 1984, at the age of 81, after 
an intense life of pioneering activities and inspiring 
enthusiasm. 
Photogrammetrists outside Finland have known and remember 
Karl Lófstróm as the outstanding and great Finnish colleague, 
as the impressive and admired personality whose internatio- 
nal activities culminated in the 1976 Helsinki Congress of 
the International Society of Photogrammetry. As congress 
director he inspired and managed that congress and made it - 
together with the small family of Finnish photogramme- 
trists - the highlight and the special event which all par- 
ticipants remember with admiration and gratitude. 
It is recalled that Karl Lófstróm was one of the charter 
members who founded the Finnish Society of Photogrammetry in 
1931. Thereafter he was international representative and 
ambassador of Finnish photogrammetry for about 50 years, 
making his first impact.at the ISP Congress at Paris, 1934, 
with the exhibition and presentation of the Finnish horizon 
camera and statoscope method which caused general atten- 
tion, /1/.