Functional data analysis and visualisation of three-dimensional surface shape.

ABSTRACT: The advent of high-resolution imaging has made data on surface shape widespread. Methods for the analysis of shape based on landmarks are well established but high-resolution data require a functional approach. The starting point is a systematic and consistent description of each surface shape and a method for creating this is described. Three innovative forms of analysis are then introduced. The first uses surface integration to address issues of registration, principal component analysis and the measurement of asymmetry, all in functional form. Computational issues are handled through discrete approximations to integrals, based in this case on appropriate surface area weighted sums. The second innovation is to focus on sub-spaces where interesting behaviour such as group differences are

SUBMITTER: Katina S 

PROVIDER: S-EPMC8518487 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature