Building 3D Statistical Shape Models of Horticultural Products

© 2017, Springer Science+Business Media, LLC. A method to build a 3D statistical shape model of horticultural products is described. The framework consists of two parts. First, the surfaces of the horticultural products, which are extracted from X-ray CT scans, are registered to obtain meaningful correspondences between the surfaces. In the second part, a statistical shape model is built from these corresponded surfaces, which maps out the variability of the surfaces and allows to generate new, realistic surfaces. The proposed shape modelling method is applied to 30 Jonagold apples, 30 bell peppers, and 52 zucchini. The average geometric registration error between the original instance and the deformed reference instance is 0.015 ± 0.011 mm for the apple dataset, 0.106 ± 0.026 mm for the bell pepper dataset, and 0.027 ± 0.007 mm for the Zucchini dataset. All shape models are shown to be an excellent representation of their specific population, as they are compact and able to generalize to an unseen sample of the population. ispartof: Food and Bioprocess Technology vol:10 issue:11 pages:2100-2112 status: published