Nondestructive assessment of ripeness in kiwifruit with near-infrared pulse illumination
Abstract
We investigate the ripeness of kiwifruit nondestructively with near-infrared pulse illumination. With this measurements in time domain, only one frequency (the wavelength 800 nm is required. Measurements were performed on three golden kiwifruits over a period of ten days. To quantify changes in temporal profiles of the detected light, we introduce two indices: the relative ripeness r(n) and the first Wasserstein distance W1(n). Both indices exhibit nonmonotonic behavior.
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