The project

starting position

In a networked world and a world of global informations digital data are very important for society and the state.

Approximately ninety percent of all collected data have a spatial reference (geodata) and take a prominent position in the digital age.

A transparent, efficient and responsible use of this resource is a prerequisite to create a wide social acceptance.

Photo-realistic, high-resolution digital spatial data have already a high priority, eg. in the criminal forensics, the structural evidence and in medicine. There is a great urgency to make digital processes legally sure against unauthorized data manipulation.

Gesetze im Kontext IRISGeo3D
Abbildung 1: Gesetze im Kontext IRIS Geo 3D


In addition to the technical requirements the legal relevance of digital data is more and more important and is getting more into the focus of legal decisions and actions.

Legal framework (Figure 1) as the Signaturgesetz and the Signaturverordnung concerned about the legal security of electronic data especially with the definition of the border between electronic documents and analog records. Other electronic media are not the subject of legislation to date.

There are currently no complete solutions for geodetic applications that provides a defined level of legal certainty for the geodesic process of collection, processing / data management and the way to use / presentation geodata.

Projekt IRISGeo3D
Abbildung 2: Das Projekt IRIS Geo 3D


The probative value of digital data is dependent on the detectable identity of the author (authenticity) and data integrity (integrity). To ensure the integrity and authenticity the 3D project geo IRIS includes the following technological developments (Figure 2)

– multi-sensor systems for legally compliant collection of spatial data

– integration of safety-related hardware (Biometric)

– integration of safety-related software (signatures, encryption)

– creation of a smart legally secure information system

– quality management system manuals for the components and processes

– process analysis and process optimization

– subject-specific metadata profiles

implementation of multi-sensor systems

generating redundant data sets of two different sensors

  • using geometric high resolution sensors
  • fusion of photogrammetric and laser-based sensors
  • measurement system I: terrestrial laser scanner + DSLR
  • measurement System II: rotating line camera + total station
  • data Integration

implementation of security

gradations in risk and safety classes

  • implemented security components adapted to risk class

Hardware (Figure 2):

  • combination of two methods (knowledge, possession, biometrics)
    • knowing (eg. password, image-based authentication)
    • ownership
    • biometrics (eg. fingerprint or palm vein scanner)
    • GPS timestamp based on the microcontroller platform. NET Gadgeteer


  • encryption, signature generation, hashcode generation

implementation of information system

Functions (Figure 3):

  • control of the sensors
  • database connectivity (PostgreSQL)
  • user administration
  • hashes, encryption
  • metadata profiles: collection and management
  • project management
  • data visualization
  • process Control and documentation
  • logging
Komponenten IRISGeo3D
Abbildung 3: Komponenten des IRIS Geo 3D