As the most challenging implementation of our neural network models, our third domain poses the challenge of extracting the values of control points for a set of curves and radius functions comprising the medial axis. The participants need to overcome fundamental problems like handling the variable number of medial curves per shape and addressing issues of curve connectivity.
This competition is a part of Deep Learning for Geometric Shape Understanding Workshop, in association with CVPR 2019.
For details about other SkelNetOns and the workshop: http://ubee.enseeiht.fr/skelneton/
The problem is a regression problem. Each input is a binary image. You must predict the Bezier control points for the series of curves and radii comprising the medial axis.
There are 2 phases:
You only need to submit the prediction results (no code). However you need to submit a short paper of 3 pages (+1 page for references) before March 25 April 3 to be eligible for the prizes. We will evaluate your methodology and your results in parallel. Paper submission will be open in the workshop CMT site, and please use the CVPR paper template.
The submissions are evaluated using the mean squared error metric on the control points.
This challenge is governed by SkelNetOn Rules. For academic use of the datasets within and outside this competition, please cite the following papers.
 SkelNetOn dataset paper (coming soon!)
 A. M. Bronstein, M. M. Bronstein, A. M. Bruckstein, R. Kimmel, Analysis of two- dimensional non-rigid shapes, Intl. J. Computer Vision (IJCV), Vol. 78/1, pp. 67-88, June 2008.
 Sebastian TB, Klein PN, Kimia BB (2004) Recognition of shapes by editing their shock graphs. IEEE Trans Pattern Anal Mach Intell 26(5):550–571
 Leonard, K., Morin, G., Hahmann, S., & Carlier, A. (2016). A 2D shape structure for decomposition and part similarity. 2016 23rd International Conference on Pattern Recognition (ICPR), 3216-3221.
Start: Feb. 19, 2019, 6 p.m.
Description: Development phase: Directly submit your results on validation data; feedback is provided on the validation set only. Warning : each missing or extra branch in the output (compared to ground truth) will be penalized in the scoring function
Start: March 29, 2019, 6 p.m.
Description: Final phase: Please complete this phase using the test dataset. The results on the test set will be revealed when the organizers make them available.
April 3, 2019, 10:15 a.m.
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