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Estimates of Maize Plant Density from UAV RGB Images Using Faster-RCNN Detection Model:Impact of the Spatial Resolution

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Plant Phenomics 2021年第1期3卷 181-196页

作者： K.Velumani R.Lopez-Lozano S.Madec W.Guo j.gillet A.Comar F.Baret Hiphen SAS 120 Rue Jean DaussetAgroparcBâtiment Technicité84140 AvignonFrance INRAE UMR EMMAHUMT CAPTE228 Route de l'AérodromeDomaine Saint Paul-Site Agroparc CS 4050984914 Avignon Cedex 9France Arvalis 228Route de l'Aérodrome-CS 4050984914 Avignon Cedex 9France International Field Phenomics Research Laboratory Institute for Sustainable Agro-Ecosystem ServicesGraduate School of Agricultural and Life SciencesThe University of TokyoTokyoJapan

Early-stage plant density is an essential trait that determines the fate of a genotype under given environmental conditions and management *** use of RGB images taken from UAVs may replace the traditional visual counting in fields with improved throughput,accuracy,and access to plant ***,high-resolution images are required to detect the small plants present at the early *** study explores the impact of image ground sampling distance(GSD)on the performances of maize plant detection at three-to-five leaves stage using Faster-RCNN object detection *** collected at high resolution(GSD≈0:3 cm)over six contrasted sites were used for model *** additional sites with images acquired both at high and low(GSD≈0:6 cm)resolutions were used to evaluate the model *** show that Faster-RCNN achieved very good plant detection and counting(rRMSE=0:08)performances when native high-resolution images are used both for training and ***,good performances were observed(rRMSE=0:11)when the model is trained over synthetic low-resolution images obtained by downsampling the native training high-resolution images and applied to the synthetic low-resolution validation ***,poor performances are obtained when the model is trained on a given spatial resolution and applied to another spatial *** on a mix of high-and low-resolution images allows to get very good performances on the native high-resolution(rRMSE=0:06)and synthetic low-resolution(rRMSE=0:10)***,very low performances are still observed over the native low-resolution images(rRMSE=0:48),mainly due to the poor quality of the native low-resolution ***,an advanced super resolution method based on GAN(generative adversarial network)that introduces additional textural information derived from the native high-resolution images was applied to the native low-resolution validation *** show some signi

关键词： RCNN Faster Image

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Spatial distribution and structure of benthic polychaete communities of Essaouira intertidal rocky shores(Atlantic coast of Morocco)

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journal of Oceanology and Limnology 2020年第1期38卷 143-155页

作者： CHOUIKH Nor-eddine gillet Patrick LANGSTON Wj CHEGGOUR Mohamed MAAROUF Abdelmalek MOUABAD Abdelfattah Laboratory“Aliments Environnement et santé”Faculty of Sciences and TechnicsB.P.549Cadi Ayyad UniversityMarrakech 40000Morocco Mer Molécules Santé Department of Biology EnvironmentFaculty of Sciences UCOAngers 49008France Marine Biological Association the LaboratoryCitadel HillPlymouth PL12PBUnited Kingdom Department of Biology Ecole Normale SupérieureB.P.2400Cadi Ayyad UniversityMarrakech 40000Morocco

Polychaetes are one of the most important groups ofmacrobenthic organisms in coastal and marine environments,in terms of diversity and abundance,and play an important role in the functioning of *** study aims to describe the structure and spatial distribution ofpolychaete communities along Essaouira's rocky shoreline(Atlantic coast of Morocco)in relation to the major environmental variables such as granulometry,salinity,temperature,pH,and intertidal *** sites from these intertidal rocky shores were sampled using a quadrat method during the summer 2016.A total of 4435 individuals belonging to 34 taxa were *** the families,Sabellaridae(24%)and Nereididae(23%)were ranked first in terms of abundance of *** alveolata(24%)and Perinereis cultrifera(13%)were the dominant ***(H')values varied from 2.28 to ***'s index(j')varied between 0.62 and *** was essentially due to the low dominance of few *** analysis was used to characterise Essaouira's rocky shores on the basis of benthic polychaete *** analysis confirmed the presence of three distinct *** to canonical correspondence analysis,the structure and distribution of faunal assemblages of benthic polychaetes was mainly related to topographical complexity,water temperature,hydrodynamic conditions and *** conclude that these rocky shores show typically high benthic polychaete diversity compared to the taxonomic list of other rocky *** addition,these results constitute a baseline data for the development of a sustainable network for long-term monitoring of benthic polychaete community changes due to ecological factor influences and anthropogenic activity impacts.

关键词： polychaetes taxonomic diversity Essaouira rocky shore faunal assemblage

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TURNER TIME

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China International Business 2009年第6期 75-75页

作者： KIT gillet

From his earliest sketches created in the 1790s right through to his monolithic, imposing landscapes of the 1830s and 40s, j.M.W Turner was never mistaken for anything short of a genius.

关键词：特纳时间 30年代 19世纪

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ETA INVARIANTS, DIFFERENTIAL CHARACTERS AND FLAT VECTOR BUNDLES

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Chinese Annals of Mathematics,Series B 2005年第1期26卷 15-44页

作者： j.M.BISMUT Département de Mathématique Université Paris-Sud B■timent 425F-91405 Orsay CedexFrance

The purpose of this paper is to give a refinement of the Atiyah-Singer families index theorem at the level of differential characters. Also a Riemann-Roch-Grothendieck theorem for the direct image of flat vector bundles by proper submersions is proved,with Chern classes with coefficients in C/Q. These results are much related to prior work of gillet-Soule, Bismut-Lott and Lott.

关键词： Characteristic classes and numbers Index theory and related fixed point theorems Heat and other parabolic equation methods

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孤立性骨肿瘤影像报告和数据系统（BTI-RADS）：系统性影像评估和综合报告方法的初步评估

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国际医学放射学杂志 2021年第6期 747-747页

作者： G.j.Ribeiro R.gillet G.Hossu j.M.Trinh E.Euxibie F.Sirveaux 郭虹

目的使用多模态方法确定孤立性骨肿瘤最相关的影像学特征,并提出系统性评估系统。方法回顾性评估230例经组织学证实的骨肿瘤、典型的"不可触及"病灶和稳

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亚太LTE连接将占半壁江山 VoLTE明年或现拐点

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通信世界 2011年第6期 23-23页

作者： joss gillet 赵经纬 Wireless Intelligence

未来5年内,亚太地区LTE连接数将占全球的43%,而中国LTE连接数在整个亚太地区的份额则将占接近一半。近期,Wireless Intelligence基于截至2010年末的最新统计数据,对未来5年全球LTE市场做了一项最新的研究。预测显示:2011年上半年,全球LT... 详细信息

未来5年内,亚太地区LTE连接数将占全球的43%,而中国LTE连接数在整个亚太地区的份额则将占接近一半。近期,Wireless Intelligence基于截至2010年末的最新统计数据,对未来5年全球LTE市场做了一项最新的研究。预测显示:2011年上半年,全球LTE连接数将超过100万;而随着全球移动运营商对NGN技术的广泛部署,到2015年,全球LTE连接数将达到3亿,在未来5年内,LTE网络将占全球移动连接数的4%。

关键词： VoLTE 运营商连接数拐点扭转点

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比较普通X线、体层融合摄影和CT金属伪影抑制技术对检测髋关节假体松动的能力

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国际医学放射学杂志 2019年第3期 369-369页

作者：罗嗣频 R.gillet P.Teixeira C.Bonarelli H.Coudane F.Sirveaux M.Louis CHRU Nancy Hop CentServ Imagerie GUILLOZ

摘要目的通过与传统平片和CT金属伪影抑制技术(CT-MAR)比较,分析数字体层融合摄影(DTS)技术诊断髋关节假体松动(PL)的能力。方法前瞻性对49例髋关节置换

关键词：假体松动髋关节抑制技术金属伪影 CT

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