基于东北森林资源二类调查成果和树种专项采集数据的森林场景仿真和技术实现
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摘要
基于2016—2018年东北内蒙古重点国有林区二类调查成果以及东北林区实地采集的30余种主要树种(含灌木)单木三维参数,利用大场景虚拟现实技术和树种建模方法和技术开展东北林区树种精细建模,实现了以小班为单元的森林复杂场景仿真展示。同时结合二类调查成果实现树种、株数、覆盖度、年龄结构、树高、下木等重要展示特征与实地调查成果的动态一致性,使森林资源管理人员不用到山头林间就能直观"看到"集中连片的、与森林调查信息匹配较好的森林现场。初步完成了东北内蒙古重点国有林区森林资源"立起来"的管理需求。
The implementation of the small-scale zoning and survey results of forest resources to the plot level has become the basic requirement for the modern management of forest resources.However,how should we make forest resources growing on the small-scale plots realistically "stand up" and be intuitive without going to the field? It is a technical problem that forest resource managers have always been concerned about.With the maturity of 3 D geographic information management technology,virtual reality technology and massive data processing technology,tree species modeling and large-scale scene forest modeling research have emerged,but it is impossible to describe the multi-species parameters of tree species growth structure and shape characteristics.Most of these studies are stuck in the model efficiency.They are mainly applied to virtual animation scenarios,but cannot practically be applied to forestry production guidance practices.Based on the 50 tree species(including shrubs)in the field survey in Northeast China,we used Onyxtree modeling tools to carry out fine modeling of tree species,and used the forest resources planning and design survey results display platform in the key national forest areas in Inner Mongolia.The complex forest scenes are quickly displayed,and the dynamic consistency of important display features such as tree species,plant number,coverage,age structure,tree height,and undergrowth and field survey results are realized,and forest resources of key national forest areas in Inner Mongolia,China,are initially completed.
The implementation of the small-scale zoning and survey results of forest resources to the plot level has become the basic requirement for the modern management of forest resources.However,how should we make forest resources growing on the small-scale plots realistically "stand up" and be intuitive without going to the field? It is a technical problem that forest resource managers have always been concerned about.With the maturity of 3 D geographic information management technology,virtual reality technology and massive data processing technology,tree species modeling and large-scale scene forest modeling research have emerged,but it is impossible to describe the multi-species parameters of tree species growth structure and shape characteristics.Most of these studies are stuck in the model efficiency.They are mainly applied to virtual animation scenarios,but cannot practically be applied to forestry production guidance practices.Based on the 50 tree species(including shrubs)in the field survey in Northeast China,we used Onyxtree modeling tools to carry out fine modeling of tree species,and used the forest resources planning and design survey results display platform in the key national forest areas in Inner Mongolia.The complex forest scenes are quickly displayed,and the dynamic consistency of important display features such as tree species,plant number,coverage,age structure,tree height,and undergrowth and field survey results are realized,and forest resources of key national forest areas in Inner Mongolia,China,are initially completed.
引文
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[13] 高金萍,高显连,孙忠秋,等.东北内蒙古重点国有林区二类调查与信息技术深度融合与实践[J].林业资源管理,2017(5):20-27.
[2] 谭同德,李静.基于OSG的分形L-系统三维树木仿真[J].计算机工程与设计,2012,33(2):644-648.
[3] 孔令麒,黎展荣,韦婷,等.基于L系统的树木建模与仿真[J].科学技术与工程,2013,13(32):9536-9548.
[4] 高扬,黎展荣,魏为,等.基于参数L系统的小叶榕树建模方法研究[J].计算机技术与发展,2016,26(7):156-159.
[5] 张权义.基于分形L系统的树木建模方法研究[J].山西农业大学学报:自然科学版,2017,37(8):605-608.
[6] 陈红倩,陈谊,曹健,等.一种动态森林场景快速仿真方法[J].华中科技大学学报:自然科学版,2011,39(10):91-98.
[7] 代柱亮.森林场景实时动态仿真技术的研究与实现[D].北京:北京邮电大学,2015.
[8] 孙文全.复杂森林场景的实时绘制技术研究[D].福州:福州大学,2011.
[9] 夏佳佳.大规模森林场景的自适应可视化技术研究[D].杭州:浙江工业大学,2012.
[10] 董天阳,夏佳佳,范菁.多风格融合的复杂森林场景自适应可视化[J].中国图象图形学报,2013,18(11):1486-1496.
[11] 张宁,张怀清,林辉,等.基于竞争指数的杉木林分生长可视化模拟研究[J].林业科学研究,2013,26(6):692-697.
[12] 刘海,张怀清,莫登奎,等.基于信息编码的森林景观可视化模拟[J].林业科学研究,2014,27(2):208-212.
[13] 高金萍,高显连,孙忠秋,等.东北内蒙古重点国有林区二类调查与信息技术深度融合与实践[J].林业资源管理,2017(5):20-27.