基于植物学的果实成熟过程中颜色变化的模拟——以番茄为例,Computer Animation and Virtual Worlds

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基于植物学的果实成熟过程中颜色变化的模拟——以番茄为例
Computer Animation and Virtual Worlds ( IF 0.9 ) Pub Date : 2023-11-23 , DOI: 10.1002/cav.2225
Yixin Xu _{1,

2} , Shiguang Liu ₁

Affiliation

植物果实成熟时的颜色变化是一种典型的时变现象，涉及多种因素。由于其复杂性和生物多样性，对这种现象进行建模具有挑战性。为了解决这个问题，我们以番茄为例，提出了一个基于植物学的框架，考虑品种、环境、植物激素和基因来模拟成熟过程中果实颜色的变化。具体来说，我们提出了一个一级动力学模型，该模型整合了品种、环境和植物激素因素来表示果皮中色素浓度的变化。此外，我们引入了逻辑模型来描述表皮色素浓度的变化。基于植物学中番茄颜色的基因表达途径，我们提出了一种基因型到表型的模拟方法来表征其生物多样性。提出了一种改进的方法，将颜料浓度准确地转换为颜色。此外，我们提出了一种基于梯度下降的方法来帮助用户快速设置颜料浓度参数。实验验证了所提出的框架可以模拟多种番茄颜色。定性和定量实验都验证了所提出的方法。此外，我们的框架可以应用于更多的水果。

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Botanical-based simulation of color change in fruit ripening: Taking tomato as an example

The color change of plant fruit in ripening is a typical time-varying phenomenon involving various factors. Due to its complexity and biodiversity, it is challenging to model this phenomenon. To address this issue, we take the tomato as an example and propose a botanical-based framework considering variety, environment, phytohormone, and genes to simulate fruit color change during the ripening process. Specifically, we propose a first-order kinetic model that integrates varietal, environmental, and phytohormonal factors to represent the variation of pigment concentrations in the pericarp. Moreover, we introduce a logistic model to describe the change in pigment concentration in the epidermis. Based on the gene expression pathway of tomato color in botany, we propose a genotype-to-phenotype simulation method to represent its biodiversity. An improved method is proposed to convert pigment concentrations into color accurately. Furthermore, we propose a gradient descent-based method to assist the user in quickly setting pigment concentration parameters. Experiments verified that the proposed framework can simulate a wide range of tomato colors. Both qualitative and quantitative experiments validated the proposed method. Furthermore, our framework can be applied to more fruits.

更新日期：2023-11-23

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