發(fā)布時(shí)間：2018-04-09 04:32

  本文選題：植物表型研究　切入點(diǎn)：近端感知　出處：《激光雜志》2017年01期

【摘要】：植物表型研究在把握植物結(jié)構(gòu)和了解植物對(duì)環(huán)境變化的反應(yīng)上起著至關(guān)重要的作用。因此,通過引入多種遙感技術(shù)例如LIDAR,研究者一直針對(duì)不同場(chǎng)景開發(fā)不同的植物表型技術(shù)。目前,該領(lǐng)域的重要趨勢(shì)是開發(fā)可供于廣泛使用的低成本三維系統(tǒng),而通常使用的高成本的LIDAR傳感器無法滿足這一需求。為了解決這個(gè)問題,試圖開發(fā)一個(gè)基于低成本二維激光掃描儀的用于室內(nèi)植物三維結(jié)構(gòu)表型研究的移動(dòng)地面近端感應(yīng)系統(tǒng)。特別地,將兩個(gè)RPLIDAR激光掃描儀(目前市場(chǎng)上最低成本的二維LIDAR傳感器)安裝在兩個(gè)遠(yuǎn)端的放置于移動(dòng)平臺(tái)的固定架上。如此一來,它們的掃描剖面被設(shè)置成一個(gè)斜交的方式。然后,經(jīng)過精確的數(shù)據(jù)三維位置坐標(biāo)設(shè)定和校準(zhǔn)后,平臺(tái)的移動(dòng)可以使得兩個(gè)系列的二維掃描剖面轉(zhuǎn)變?yōu)檠芯繀^(qū)一排植物的全部三維表征�；谌S點(diǎn)云結(jié)果,人們可以獲得詳細(xì)的植物結(jié)構(gòu)特征。實(shí)驗(yàn)表明,提出的方案得到基本驗(yàn)證,對(duì)于特定的植物結(jié)構(gòu)變量例如葉面積(R2=0.92)可以精確獲取�？傊�,該工作可以推動(dòng)將基于LIDAR的植物表型技術(shù)發(fā)展到真正意義上的低成本階段,而且這表明LIDAR在植物表型研究上的實(shí)際應(yīng)用會(huì)越來越多出現(xiàn)在植物栽培、精準(zhǔn)農(nóng)業(yè)等領(lǐng)域。
[Abstract]:The study of plant phenotype plays an important role in understanding plant structure and plant response to environmental change.Therefore, by introducing a variety of remote sensing techniques such as lidar, researchers have been developing different plant phenotypic techniques for different scenarios.At present, the important trend in this field is to develop low-cost 3D systems that can be widely used, but the commonly used high-cost LIDAR sensors can not meet this demand.In order to solve this problem, this paper attempts to develop a mobile ground proximal sensing system based on a low-cost two-dimensional laser scanner for the study of three-dimensional structural phenotype of indoor plants.In particular, two RPLIDAR laser scanners (the lowest available two-dimensional LIDAR sensors on the market) are installed on two remote fixed frames on the mobile platform.As a result, their scanning profiles are set to a skew.Then, after setting and calibrating the precise 3D position coordinates, the movement of the platform can transform the two series of two-dimensional scanning profiles into the full three-dimensional representation of a row of plants in the study area.Based on three-dimensional point cloud results, detailed plant structure features can be obtained.The experimental results show that the proposed scheme is basically verified and can be accurately obtained for specific plant structural variables such as leaf area R20.92).In short, this work can promote the development of plant phenotype technology based on LIDAR to the real low-cost stage, and this indicates that the actual application of LIDAR in plant phenotype research will be more and more in plant cultivation, precision agriculture and other fields.
【作者單位】： 北京大學(xué)地球與空間科學(xué)學(xué)院;
【分類號(hào)】：TN209

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