M. He et al., VARIATION OF GAUSSIAN CURVATURE UNDER CONFORMAL MAPPING AND ITS APPLICATION, Computers & mathematics with applications, 26(1), 1993, pp. 63-74
We characterize conformal mapping between two surfaces, S and S, base
d on Gaussian curvature before and after motion. An explicit represent
ation of the Gaussian curvature after conformal mapping is presented i
n terms of Riemann-Christoffel tensor and Ricci tensor and their deriv
atives. Based on changes in surface curvature, we are able to estimate
the stretching of non-rigid motion during conformal mapping via a pol
ynomial approximation.