| 犁耕土壤表面的三维分形插值重构 |
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| 引用本文： | 刘奕贯,鲁植雄,Hoogmoed W B,李晓勤.犁耕土壤表面的三维分形插值重构[J].农业机械学报,2014,45(3):152-157. |
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| 作者姓名： | 刘奕贯 鲁植雄 Hoogmoed W B 李晓勤 |
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| 作者单位： | 南京农业大学,南京交通职业技术学院;南京农业大学;瓦赫宁根大学及研究中心农场技术组;南京农业大学 |
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| 基金项目： | 国家自然科学基金资助项目（51175269）、高等学校博士学科点专项科研基金资助项目（20100097110027）和江苏省高校优秀中青年教师和校长境外研修计划资助项目 |
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| 摘 要： | 利用非接触式激光地面不平度仪测量三维犁耕地面不平度,采用不同的剔除率,对剔除后的犁耕地面不平度数据进行了三维分形插值重构,使用统计特性参数及分形特性参数对原始测量的犁耕地面不平度与插值重构后的犁耕地面不平度进行对比分析。研究结果表明:在剔除率小于80%的前提下,使用三维分形插值方法可重构出三维犁耕土壤表面,真实表达了原始的三维犁耕表面;并可得出犁耕土壤不平度的纵向无标度区间为459 mm,横向无标度区间为23 mm。这对三维犁耕地面不平度的最小测量间距提供了理论依据,为三维犁耕地面不平度重构提供了实用方法。
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| 关 键 词： | 土壤不平度 分形 迭代函数系统 三维分形插值 |
| 收稿时间： | 2013/3/29 0:00:00 |
Reconstruction of Ploughed Soil Surface with 3D Fractal Interpolation |
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| Liu Yiguan,Lu Zhixiong,Hoogmoed W B and Li Xiaoqin.Reconstruction of Ploughed Soil Surface with 3D Fractal Interpolation[J].Transactions of the Chinese Society of Agricultural Machinery,2014,45(3):152-157. |
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| Authors: | Liu Yiguan Lu Zhixiong Hoogmoed W B and Li Xiaoqin |
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| Institution: | Nanjing Agricultural University,Nanjing Communications Institute of Technology;Nanjing Agricultural University;Farm Technology Group, Wageningen University and Research Centre;Nanjing Agricultural University |
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| Abstract: | By using a laser profiler, the roughness of ploughed soil surface was obtained. 3D fractal interpolation method was used to interpolate several kinds of reduced measured surface data which were reduced from the original measured ploughed soil surface elevation data in different reduction rates. Also fractal and statistical characteristic parameters were used to compare the original data and the interpolated data. The results show that 3D ploughed soil surface model can be obtained efficiently by the 3D fractal interpolation method with the reduction rate below 80% and the fractal non scale spacing of the dimensions was deduced: the transverse and longitudinal spacing were 23mm and 459mm, respectively. The result provided a theory for choosing the minimum measurement spacing of the ploughed soil and a method for reconstruction of ploughed soil surface. |
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| Keywords: | Soil roughness Fractal Iterated function system 3D fractal interpolation |
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