Development of an optical system for the 3D measurement of aerial currents
The comfort of flight passengers significantly depends on the air flow in the cabin. Measuring the air flow can be accomplished by tracking helium-filled soap bubbles which have the same density as air. The bubbles are led into the cabin and move according to the air flow. A light-source synchronized with a video camera illuminates the bubbles from the cabin floor, so that the bubbles can be identified in the image sequences. An existsing 2D-algorithm allows detecting the traces of the bubbles and calculating the motion related to image coordinates. Incorporating the calibration parameters and the exposure time, the pose, length, direction and speed of these bubbles is determined. Therefore information about the air flow can be deducted.
The goal of this master thesis is the extension of the 2-dimensional system for measurements in the 3-dimensional space. The bubbles shall be acquired by a stereovision system that consists of two synchronized cameras. Firstly the two images will be evaluated separately, then the algorithm (to develop) shall detect the corresponding traces and calculate the movement of the bubbles in the 3-dimensional space.
- Developement of a calibration tool to find correspondences between image- and world-coordinates;
- Developement of an algorithm to calculate depth information in world coordinates from the stereo images;
- Implementation of the algorithms and integration with the existing source code (Matlab);
- Verification and testing;
- Programming, C/C++;
- basic knowledge about image analysis;
- basic knowledge in mathematics and physics;
The TAMS group in collaboration with AIRBUS offers the above diploma/master project, available to start immediately.
The german version can be viewed here. (PDF version)
- Denis Klimentjew, Room F-330, Pho.: +49 (0)40-42883-2508
- Hannes Bistry, Room F-313, Pho.: +49 (0)40-42883-2398
- Prof. Dr. Jianwei Zhang, Room F-308, Pho.: +49 (0)40-42883-2431
