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Bibliographic Details
Main Authors: Ishiji, Hiyori, Kanatsu, Hiroki, Komatsubara, Masaki, Minata, Shingo, Uesugi, Masaki, Yuguchi, Kohei, Machida, Manabu
Format: Preprint
Published: 2026
Subjects:
Online Access:https://arxiv.org/abs/2603.07226
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Table of Contents:
  • 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 $W_1(n)$. Both indices exhibit nonmonotonic behavior.