苗腾,赵春江,郭新宇,陆声链,温维亮.基于叶绿素相对值的植物叶片颜色模拟方法[J].农业机械学报,2014,45(8):282-287.
Miao Teng,Zhao Chunjiang,Guo Xinyu,Lu Shenglian,Wen Weiliang.Simulation of Plant Leaf Color Based on Relative Content of Chlorophyll[J].Transactions of the Chinese Society for Agricultural Machinery,2014,45(8):282-287.
摘要点击次数: 2978
全文下载次数: 1251
基于叶绿素相对值的植物叶片颜色模拟方法   [下载全文]
Simulation of Plant Leaf Color Based on Relative Content of Chlorophyll   [Download Pdf][in English]
投稿时间:2013-07-01  
DOI:10.6041/j.issn.1000-1298.2014.08.045
中文关键词:  植物叶片  颜色模拟  SPAD值  数字植物
基金项目:国家高技术研究发展计划(863计划)资助项目(2013AA102305)、“十二五”国家科技支撑计划资助项目(2012BAD35B01)和北京市农林科学院自主创新专项(KJCX201104011)
作者单位
苗腾 北京农业信息技术研究中心 
赵春江 北京农业信息技术研究中心 
郭新宇 北京农业信息技术研究中心 
陆声链 北京农业信息技术研究中心 
温维亮 北京农业信息技术研究中心 
中文摘要:提出了一种基于叶绿素相对值(SPAD)的植物叶色模拟方法。首先利用自制的叶色数据采集装置,在外部环境恒定的条件下采集叶色数据,跟踪监测叶片不同生理时期的叶色变化。再基于数据对叶色进行分析,构建SPAD值与特定光环境下叶片颜色值的关系函数,并利用该函数推导出叶片的漫反射计算公式;最后采用基于SPAD纹理的方法对叶片表面的颜色差异以及随着时间发生的老化现象进行模拟。结果显示在确定的恒定外部环境下,SPAD值与叶片漫反射红绿蓝三通道关系函数呈指数关系,决定系数分别为0.972、0.968、0.509,表明SPAD与叶片漫反射颜色之间存在相关性,因此可利用SPAD作为驱动因子进行叶色仿真。同时,从视觉角度加以分析,基于SPAD的叶色模拟结果与真实图像对比,叶色的变化趋势一致,结果较真实。
Miao Teng  Zhao Chunjiang  Guo Xinyu  Lu Shenglian  Wen Weiliang
Beijing Research Center for Information Technology in Agriculture;Beijing Research Center for Information Technology in Agriculture;Beijing Research Center for Information Technology in Agriculture;Beijing Research Center for Information Technology in Agriculture;Beijing Research Center for Information Technology in Agriculture
Key Words:Plant leaves  Color simulation  SPAD  Digital plant
Abstract:A method to simulate the leaf color based on SPAD data was presented. Firstly, the color data in different physiological ages of green dill leaves were tracked and detected using a self-made device for capturing leaf images, which could maintain the stability of the external environment (such as light, camera position). Then, the leaf color attributes were analysed based on the data collected and a function representing the relationship between SPAD and leaf color was constructed to deduce the diffuse reflection formula of the leaf. Finally, a SPAD texture was used to simulate the time-and-space-varying reflectance of leaves aging. The experimental results showed that in the constant environment, the relationship between the SPAD and diffuse color of leaves could be represented by some exponential functions and the R2 was 0.972,0.968,0.509 respectively. This showed that there was a correlation between SPAD and leaf diffuse color, and it was reasonable using SPAD value as a driving factor to simulate the leaf aging. Meanwhile, compared with real photo, visual effects of proposed method could show the trend of leaf color aging realistically.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

   下载PDF阅读器