Fraunhofer Institute of Optronics, System Technologies and Image Exploitation IOSB

Obtaining a license for TRM4

This website contains detailed instructions on how to obtain a license for TRM4. It also presents a short summary of the corresponding license agreement.

TRM4 is a program for the assessment of imager performance, which is developed for the German government. The range performance calculated by TRM4 can be used to compare the performance of different imagers. This makes TRM, within the European Union, an important program for companies to determine the performance of their imagers. To provide companies with a validated program for range performance calculations, TRM4 is distributed for free. Nevertheless, there are several restrictions on the program:

  1. It is not allowed to give TRM4 to third parties.
  2. Immediate results from the software may not be used for consultation of companies, institutions, and governments outside NATO and Switzerland without prior written consent of Fraunhofer IOSB.
  3. Consultation services using TRM4 or immediate results obtained with the goal of financial gain are not permitted without prior written consent by Fraunhofer IOSB; in cases that the permission is granted, Fraunhofer IOSB may negotiate an appropriate license fee.


If you comply with these requirements, please send an email to together with an informal letter explaining who you are and what you need TRM4 for. We will then send you the license agreement. Fill in the names of all your employees who are going to work with TRM4 on the first page as well as the name of your contact person. Whenever a new version of TRM is available or when we are preparing a training course, we will send an email to your contact person.

In a next step, you need to send TWO signed versions of the license agreement to the following address:

Assistance Department Optronics
Fraunhofer Institute of Optronics, System Technologies and Image Exploitation (IOSB)
Gutleuthausstr. 1
76275 Ettlingen

We will send you the countersigned license agreement and a CD with the TRM4 program and the documentation as a pdf file.