Screening for Plant Features

In this chapter, an overview of different plant features is given, from (sub)cellular to canopy level. A myriad of methods is available to measure these features using image analysis, and often, multiple methods can be used to measure the same feature. Several criteria are listed for choosing a certain (set of) image descriptor(s) to measure a plant feature. The choice is dependent on a variety of reasons, including accuracy, robustness, recording time, throughput, costs and flexibility. We conclude that hyperspectral imaging can provide a powerful set of image descriptors, which can be used to measure numerous plant features using multivariate statistical models. However, care should be taken that the estimates obtained with these statistical models provide the right measurement for the plant feature under all circumstances of interest.