| Paper: | WP-P3.8 |
| Session: | Video Object Segmentation and Tracking III / Video Shot/Scene Segmentation |
| Time: | Wednesday, September 19, 14:30 - 17:10 |
| Presentation: |
Poster
|
| Title: |
FAST TIME-SPACE TRACKING OF SMOOTHLY MOVING FINE STRUCTURES IN IMAGE SEQUENCES |
| Authors: |
David Tschumperlé; CNRS | | |
| | Yohan Bentolila; IFP | | |
| | Jean Martinot; IFP | | |
| | Jalal Fadili; ENSICAEN | | |
| Abstract: |
We address the problem of temporal tracking fine point-like and filamentary structures exhibiting smooth motions in image sequences. By taking these specific restrictions into account, we propose an original tracking method based on the search for integral lines in time-space structure tensor fields. The method appears to be simple and very efficient regarding computation time and tracking precision, allowing a sub-pixel accuracy in both spatial and temporal domains. We suggest a numerical implementation of the algorithm based on a modified constrained Runge-Kutta scheme. The performance and potential applicability of our algorithm is illustrated with two real cases : the tracking of internal linear features in composite materials observed with X-rays and the tracking of granular-shaped objects moving in a gas flow. |
