A Landmark-Free Method for Three-Dimensional Shape Analysis
Fig 2
Graphs comparing aspects of GPA and GPSA for the single species sample with size removed.
Top left: GPSA and GPA superimpositions compared using Procrustes distance. Note the high correlation. Top right: The two superimpositions compared using Procrustes surface metric. Note the high correlation. Bottom left: Procrustes surface metric and Procrustes distance measures compared using GPA superimposition. Note the low correlation. Bottom right: The shape distance measures compared using GPSA superimposition. Note the low correlation.