Fig 7. 4D registration of a point cloud pair scanned on consecutive days for maize (top) and tomato (bottom) plant.

The left column shows the two input point clouds (${\mathcal{P}}_1,{\mathcal{P}}_2$) along with their skeletons, with the estimated correspondences between the skeleton nodes shown by dashed lines, and the right column shows the deformed point cloud ${\widehat{\mathcal{P}}}_1$ (in pink) overlaid on ${\mathcal{P}}_2$.