Scientific Reports 6: Article number: 28962; published online: 01 July 2016; updated: 19 August 2016.

In this Article, the PyImageQualityRanking software source code has been omitted from the Methods section under subheading ‘Image Quality Ranking Software’. It should read:

“The PyImageQualityRanking software’s source code can be downloaded from https://bitbucket.org/sakoho81/pyimagequalityranking/. The software is distributed as a standard Python package, which contains an automatic setup script for easy installation. A convenient command line interface is provided for controlling various measures. For further details, please refer to the software documentation at https://bitbucket.org/sakoho81/pyimagequalityranking/wiki/Home.”