Visual simulation of rice leaf color change process based on SPAD value

doi:10.3778/j.issn.1002-8331.1512-0359

Computer Engineering and Applications ›› 2017, Vol. 53 ›› Issue (11): 233-236.DOI: 10.3778/j.issn.1002-8331.1512-0359

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Visual simulation of rice leaf color change process based on SPAD value

SUN Aizhen, YANG Hongyun, HE Huojiao

School of Software, Jiangxi Agricultural University, Key Laboratory of Agricultural Information Technology of Colleges and Universities in Jiangxi Province, Nanchang 330045, China

Online:2017-06-01 Published:2017-06-13

基于SPAD值的水稻叶色变化过程可视化模拟

孙爱珍，杨红云，何火娇

江西农业大学软件学院/江西省高等学校农业信息技术重点实验室，南昌 330045

Abstract

Abstract: SPAD value and RGB value of rice leaf are observed experimentally. The relationship model between SPAD values and RGB value of leaf image is analyzed and constructed, the [R2] is 0.9328, 0.8331, 0.5623 respectively. This shows that there is a correlation between SPAD and leaf color. By analyzing the SPAD value changed over the leaf surface and leaf growth time, SPAD value in different parts of leaf is calculated according to the interpolation principle, and RGB value is calculated according to the relational model. And through Microsoft’s Direct3D9. 0 graphics library and vc++ programming, it achieves the rice leaf color change process visual simulation based on the previous 3D model of rice leaf, and realistic strong effect.

Key words: rice, leaf color, SPAD value, visualization

摘要： 通过试验观测水稻叶片SPAD值与叶片图像的RGB值，分析并构建了SPAD值与叶片图像的R、G、B分量值之间关系模型，模型判定系数分别为0.932?8、0.833?1、0.562?3，表明SPAD与叶片颜色之间存在相关性。通过对SPAD值随叶片表面空间和时间的变化分析，利用插值原理计算出叶片不同部位的SPAD值，根据关系模型计算生成叶片的RGB值。并通过微软的Direct3D9.0图形函数库和vc++编程，在前期水稻叶片三维模型的基础上，实现了水稻叶片颜色变化过程的可视化模拟，真实感效果较强。

关键词: 水稻, 叶色, SPAD值, 可视化

SUN Aizhen, YANG Hongyun, HE Huojiao. Visual simulation of rice leaf color change process based on SPAD value[J]. Computer Engineering and Applications, 2017, 53(11): 233-236.

孙爱珍，杨红云，何火娇. 基于SPAD值的水稻叶色变化过程可视化模拟[J]. 计算机工程与应用, 2017, 53(11): 233-236.

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Visual simulation of rice leaf color change process based on SPAD value

基于SPAD值的水稻叶色变化过程可视化模拟

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