KERN PHOTOGRAMMETRIC SOFTWARE 
Luis Cogan, Dorothy Hunter 
Kern & Co., Ltd 
5000 Aarau 
Switzerland 
Commission I, ISPRS Kyoto, July 1988 
Abstract 
The concepts involved in the development of Kern 
Photogrammetric software are described and an overview is given 
of the software products which are currently available. 
1. Introduction 
Kern Photogrammetric software is developed with the concept 
that for both user and manufacturer, the software is an 
investment which may be built upon. The user invests expense in 
purchasing software and learning how to use it. This experience 
should never be lost when adding to or upgrading this systen. 
The manufacturer invests years of work in developing a software 
product. Future products and further development must be built 
upon existing software and not started from the beginning each 
time. 
2. Software Philosophy 
Basic concepts for software development were defined and 
implemented using a suitable development environment. 
2.1 Design Concepts 
A few concepts have been chosen as the guide lines for the 
development and maintenance of our photogrammetric software. 
- the software development environment should be as 
machine independent as possible. 
- program design should utilise effective software tools 
to allow rapid software development and continued 
maintenance. 
- software must be user friendly, with logical 
operational sequences. 
- tools are provided to allow the user to develop his 
own software. 
By adhering to these criteria, it was then possible to develop 
a style of programming to produce software which is easy to 
transport and maintain from the manufacturer's point of view, 
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