* 8 pages, 4 figures, best paper award of CVWW 2014, Computer Vision
Winter Workshop, K\v{r}tiny, Czech Republic, 3-5th February 2014 Access Paper or Ask Questions
* 10 pages, 2 figures, appear at 35th German Conference, GCPR 2013,
Saarbr\"ucken, Germany, September 3-6, 2013. Proceedings Access Paper or Ask Questions