This article refers to:
Choi T, Chin S. Acne scar and scar synthesis system using height map and improved subsurface scattering color model. Computer Assisted Surgery. 2016;21:176–183.
http://dx.doi.org/10.1080/24699322.2016.1240305
When the above article was first published online, there was a typo in Equation 2. The final form of Equation (2) is as below:
Taylor & Francis apologises for this error.