Fig. 9

Illustration of the spectral clustering approach used by [174]. The point cloud obtained by laser scanning is converted into a graph representation, after which spectral embedding finds intrinsic plant directions, which are decomposed in the principal plant axes. These correspond to elementary units such as leaf blades, petioles, and stems. Reprinted by permission of the publisher Taylor & Francis Ltd, (http://www.tandfonline.com) and the authors