Correction to: Scientific Reports https://doi.org/10.1038/s41598-018-30657-6, published online 22 August 2018

Martin Housset was omitted from the author list in the original version of this Article. This has been corrected in the PDF and HTML versions of the Article, and in the accompanying Supplementary Information file.

The Author Contributions section now reads:

J.E.B. conceived and developed the research idea with the assistance of P.G. and A.B. The study design was performed by J.E.B., P.G. and A.B. J.E.B., M.H. and C.D. performed the segmentation task. J.E.B., M.H., C.D., J.T., A.B., B.D., R.C., S.C., B.N. performed data collection. J.E.B. performed the computational experiments with guidance from P.G., A.B. The paper was written by J.E.B. with technical content from A.B., and extensive editorial input from all authors.