Realtime Photometric-Stereo

In this project a real-time system for the 3D reconstruction of several differently illuminated images with previously determined lighting directions was developed. The design consists of a camera that is connected via a GPIO connetor with eight LEDs, a voltage unit and a LED control unit. The acquired images are then processed via OpenCL on the graphics card of the connected computer in order to determine the surface normals by means of the directions of light and the intensities per pixel. In a following step this data is used to create a closed height map using a global integration approach. The whole process from receiving the camera images up to visualising the finished 3D reconstruction takes about 80ms.

Butterfly animation