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Estimation of rice seedling growth traits with an end-to-end multi-objective deep learning framework

文献类型： 外文期刊

作者： Ye, Ziran 1 ; Tan, Xiangfeng 1 ; Dai, Mengdi 1 ; Lin, Yue 2 ; Chen, Xuting 1 ; Nie, Pengcheng 3 ; Ruan, Yunjie 3 ; Kong, Dedong 1 ;

作者机构： 1.Zhejiang Acad Agr Sci, Inst Digital Agr, Hangzhou, Peoples R China

2.Hangzhou City Univ, Inst Spatial Informat City Brain ISCA, Hangzhou, Peoples R China

3.Zhejiang Univ, Inst Agr Bioenvironm Engn, Coll Biosyst Engn & Food Sci, Hangzhou, Peoples R China

4.Zhejiang Univ, Acad Rural Dev, Hangzhou, Peoples R China

关键词： growth traits; fresh weight; rice seedling; deep learning; convolution neural network

期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.6； 五年影响因子：6.8 ）

ISSN： 1664-462X

年卷期： 2023 年 14 卷

页码：

收录情况： SCI

摘要： In recent years, rice seedling raising factories have gradually been promoted in China. The seedlings bred in the factory need to be selected manually and then transplanted to the field. Growth-related traits such as height and biomass are important indicators for quantifying the growth of rice seedlings. Nowadays, the development of image-based plant phenotyping has received increasing attention, however, there is still room for improvement in plant phenotyping methods to meet the demand for rapid, robust and low-cost extraction of phenotypic measurements from images in environmentally-controlled plant factories. In this study, a method based on convolutional neural networks (CNNs) and digital images was applied to estimate the growth of rice seedlings in a controlled environment. Specifically, an end-to-end framework consisting of hybrid CNNs took color images, scaling factor and image acquisition distance as input and directly predicted the shoot height (SH) and shoot fresh weight (SFW) after image segmentation. The results on the rice seedlings dataset collected by different optical sensors demonstrated that the proposed model outperformed compared random forest (RF) and regression CNN models (RCNN). The model achieved R-2 values of 0.980 and 0.717, and normalized root mean square error (NRMSE) values of 2.64% and 17.23%, respectively. The hybrid CNNs method can learn the relationship between digital images and seedling growth traits, promising to provide a convenient and flexible estimation tool for the non-destructive monitoring of seedling growth in controlled environments.

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