Automatic Inspection of Sewer Pipes

The inspection of sewer pipes is mandatory to guarantee their functionality. At present, mobile robots with cameras are used to tackle this task. The manual process of damage detection and classification is error prone because of the repeating and tiresome work. Therefor the goal of this project is the development of a system, which is capable of assisting the employee with the automatic detection and classification of damages.

First experiments in this project were based on legacy data from sewer pipe inspections. The pictures were taken with fisheye cameras. To account for artifacts caused by the camera movement we developed an algorithm to estimate the camera position. Furthermore we developed algorithms to eliminate uneven lighting in the images and to generate smooth transitions between subsequent images. Based on the noticeably improved images a Deep-NN was trained for the detection of defects.

Nevertheless, some damages are not visible in 2D images, so depth information is required. A novel camera head will be developed and used for the acquisition of the 3D pipe structure. Based on the generated point clouds a temporal and spatial consistent 3D pipe model can be calculated. Originating from the 3D model Deep Learning techniques will be used to detect and classify defects.

Spokesperson
Eisert, Peter Prof. Dr.-Ing. (Details) (Visual Computing)

Financer
BMBF

Duration of Project
Start date: 02/2016
End date: 12/2020

Research Areas
Interactive and Intelligent Systems, Image and Language Processing, Computer Graphics and Visualisation

Research Areas
Informatik

Last updated on 2020-06-04 at 10:57