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Estimating Plant Nitrogen Concentration of Rice through Fusing Vegetation Indices and Color Moments Derived from UAV-RGB Images

Haixiao Ge, Haitao Xiang, Fei Ma, Zhenwang Li, Zhengchao Qiu, Zhengzheng Tan, Changwen Du
2021 Remote Sensing  
Estimating plant nitrogen concentration (PNC) has been conducted using vegetation indices (VIs) from UAV-based imagery, but color features have been rarely considered as additional variables.  ...  to estimate PNC through fusing VIs and color moments.  ...  Acknowledgments: Thanks to Ke Wu for providing the detail information of the experimental design in this study. Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/rs13091620 fatcat:vmvoscwz55esleo42nfcqr3xey

Enhancing the Nitrogen Signals of Rice Canopies across Critical Growth Stages through the Integration of Textural and Spectral Information from Unmanned Aerial Vehicle (UAV) Multispectral Imagery

Hengbiao Zheng, Jifeng Ma, Meng Zhou, Dong Li, Xia Yao, Weixing Cao, Yan Zhu, Tao Cheng
2020 Remote Sensing  
These findings indicate that the addition of textural information derived from UAV multispectral imagery could reduce the effects of background materials and saturation and enhance the N signals of rice  ...  (LNA), plant nitrogen concentration (PNC), and plant nitrogen accumulation (PNA).  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/rs12060957 fatcat:mkdfz5ccmff4fav375ikncbi4u

Detection and Analysis of Degree of Maize Lodging Using UAV-RGB Image Multi-Feature Factors and Various Classification Methods

Zixu Wang, Chenwei Nie, Hongwu Wang, Yong Ao, Xiuliang Jin, Xun Yu, Yi Bai, Yadong Liu, Mingchao Shao, Minghan Cheng, Shuaibing Liu, Siyu Wang (+1 others)
2021 ISPRS International Journal of Geo-Information  
An approach was developed that fuses supervised and object-oriented classifications on spectrum, texture, and canopy structure data to determine the degree of lodging with high precision.  ...  Based on the spatial distribution of degree of lodging as a function of crop variety, sowing date, densities, and different nitrogen treatments, this work determines how feature factors affect the degree  ...  Thus, for this paper, the image was transformed from RGB color space to HSV color space.  ... 
doi:10.3390/ijgi10050309 fatcat:6uyob56d5rcdxbn25sstijcuem

UAV Flight Experiments Applied to the Remote Sensing of Vegetated Areas

Esther Salamí, Cristina Barrado, Enric Pastor
2014 Remote Sensing  
This review provides an overview of recent research that has reported UAV flight experiments on the remote sensing of vegetated areas.  ...  This work follows a top-down categorization strategy and attempts to fill the gap between application requirements and the characteristics of selected tools, payloads and platforms.  ...  indices GI Greenness Index VIS Chlorophyll concentration [22,44,45,51] GNDVI Green Normalized Difference VI NIR, VIS Nitrogen concentration [22] Water stress detection [51] LAI estimation [  ... 
doi:10.3390/rs61111051 fatcat:bamtzqzbxjfj7pbw5xylmsxwka

MICRO AND MACRO VIEWS OF THE MAIZE-SETOSPHAERIA TURCICA PATHOSYSTEM

Tyr Wiesner-Hanks
2020
He attended Northwestern University and graduated cum laude with a B.A. in Biology, concentrating in Plant Biology as part of a fairly new joint program between Northwestern and the Chicago Botanic Garden  ...  I mapped genetic loci conditioning MDR in order to understand the genetic architecture thereof, finding that the high degree of MDR observed in a maize line derived from recurrent selection was mostly  ...  From the same 588 UAV images, we sampled 58,800 negative images, 100 from each image.  ... 
doi:10.7298/5yt0-pd05 fatcat:bi5h4xl7dnfbbgy5ehrlvgfpey