Real-time Depth and Distance Measurement by Means of Stereo Endoscopy

New algorithms and demonstrators are being developed to enable a promising use of stereophotogrammetry for new application fields in the near future within the framework of the BMWi funded project 3DInMed.

The article “3D-Endoskopie: Kinotechnik für die berührungslose Vermessung”, by Jean-Claude Rosenthal from Fraunhofer Heinrich Hertz Institute and Johannes Ruhhammer from SCHÖLLY FIBEROPTIC GmbH is the cover story in the current issue of the German trade journal photonik.

To sum it up, the article presents a new image-based stereometric system based on new algorithms. These algorithms allow real-time depth and distance measurement by means of stereoscopic endoscopy. The images that are being recorded with stereo borescopes can be displayed in 3D on any conventional 3D display via known stereo representation. The resulting improvement of the depth perception ensures an intuitive and quick navigation of the inspection site.

The algorithms used for the depth and distance measurement are based on the principle of stereo triangulation which is an established procedure in optical measurement. The big advantages of stereoscopic measuring systems are an improved measuring methodology and an easy user guidance through the in real-time generated disparity information.

Please find the detailed article in German (!) available for download here.

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