Obtaining the three-dimensional structure of tree orchards from remote 2D terrestrial LIDAR scanning

Rosell, Joan Ramón; Llorens, Jordi; Sanz, Ricardo; Arnò, Jaume; Ribes-Dasi, Manel; Masip, Joan; Escolà, Alexandre; Camp, Ferran; Solanelles, F.; Gracia, Felip; Gil, Emilio; Val, L.; Planas, S.; Palacín, Jordi

doi:10.1016/j.agrformet.2009.04.008

Cited by 235 publications

(164 citation statements)

References 32 publications

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“…Research groups have developed and tested several MTLS systems and data processing methods in different tree crops [5,14,15]. Usually, 2D LiDAR sensors are mounted on a vehicle that moves along the alleys of the grove to vertically scan the side of the tree rows.…”

Section: Introductionmentioning

confidence: 99%

A Method to Obtain Orange Crop Geometry Information Using a Mobile Terrestrial Laser Scanner and 3D Modeling

et al. 2017

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LiDAR (Light Detection and Ranging) technology has been used to obtain geometrical attributes of tree crops in small field plots, sometimes using manual steps in data processing. The objective of this study was to develop a method for estimating canopy volume and height based on a mobile terrestrial laser scanner suited for large commercial orange groves. A 2D LiDAR sensor and a GNSS (Global Navigation Satellite System) receiver were mounted on a vehicle for data acquisition. A georeferenced point cloud representing the laser beam impacts on the crop was created and later classified into transversal sections along the row or into individual trees. The convex-hull and the alpha-shape reconstruction algorithms were used to reproduce the shape of the tree crowns. Maps of canopy volume and height were generated for a 25 ha orange grove. The different options of data processing resulted in different values of canopy volume. The alpha-shape algorithm was considered a good option to represent individual trees whereas the convex-hull was better when representing transversal sections of the row. Nevertheless, the canopy volume and height maps produced by those two methods were similar. The proposed system is useful for site-specific management in orange groves.

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Section: Introductionmentioning

confidence: 99%

A Method to Obtain Orange Crop Geometry Information Using a Mobile Terrestrial Laser Scanner and 3D Modeling

et al. 2017

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“…In contrast, with the development and improvement of 3D scanning precision [11,12], the point-based modeling method has made it possible to acquire the cloud points of plants and fruits with rich detail and high density [13][14][15][16]. Furthermore, because of non-topologic connection among points, it can present the morphology of plant organs with rich details more flexibly and veritably than other methods.…”

Section: Motivationmentioning

confidence: 99%

“…For texton T 45,11 , the average number of components per pixel and storage compression ratio are calculated based on Eqs. (4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18) and (4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19), respectively, in Eq. (5-6).…”

Section: Texture Feature Evaluationmentioning

confidence: 99%

Realistic texture synthesis for point-based fruitage phenotype

Yang

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et al. 2018

Computers in Biology and Medicine

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“…O sensor LIDAR, quando utilizado juntamento com sensores multiespectrais, pode fornecer detalhes em três dimensões da cobertura vegetal, permitindo o cálculo do volume da copa das plantas (POLO et al, 2009;ROSELL et al, 2009).…”

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Efeito da morfometria da laranjeira na pulverização hidropneumática

et al. 2014

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Resumo -Objetivou-se com este trabalho, estudar a influência da morfometria da planta na pulverização de agrotóxicos, utilizando-se um pulverizador hidropneumático automatizado. O trabalho foi conduzido em laranjal da variedade Pêra Rio e o índice volumétrico foi adotado em função da copa e histórico da área, sendo adotado 50 mL m 3 . As velocidades de trabalho foram de 2,3 e 2,5 km h -1 nas pressões de trabalho de 633 e 844 kPa, respectivamente, com um volume de calda de 696 L ha -1 . O experimento foi montado em esquema fatorial (3 x 4 x 3), sendo três alturas na planta, quatro posições no plano horizontal da planta e três profundidades na copa, no delineamento de blocos casualizados, com três repetições. Os dados foram submetidos à análise de variância e, as médias analisadas pelo teste de Tukey a 5% de probabilidade. Os resultados indicaram que a biometria da planta afeta a pulverização de agrotóxicos na cultura da laranja. O déficit de pressão de vapor d'água no ar e a pressão de trabalho afetaram o espectro de gotas da pulverização. O aumento do déficit de pressão de vapor d'água no ar elevou o risco de evaporação e diminuiu o tamanho das gotas, reduzindo a deposição da calda. Palavras-chave -Condições meteorológicas na pulverização agrícola. Tecnologia de aplicação. Tamanho de gotas.Abstract -The objective of this work was to study the influence of morphometric in orange tree during a pesticides spraying, using an automated air blast sprayer. This study was conducted in an orange orchard with Pera Rio variety and the volume index was adopted as a function of the tree crown and area history, being adopted 50 mL m -3 . The operating speeds were 2.3 and 2.5 km h -1 at the operating pressures of 633 and 844 kPa, respectively, with volume of spray solution of 696 L ha -1 . The experimental design had a factorial scheme (3 x 4 x 3), with three plant heights, four positions in the horizontal plane of the tree and three depths in the tree crown, in the randomized block design with three replications. Data were subjected to analysis of variance and the means were analyzed by Tukey test at 5% of probability. The results indicated that the biometrics in the tree affect the pesticides spraying in orange trees. The water vapor pressure deficit and the operating pressures affected the droplet spectrum. Increasing the water vapor pressure deficit increased the risk of evaporation and decreased the droplets size, reducing the deposition of spray solution.

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Obtaining the three-dimensional structure of tree orchards from remote 2D terrestrial LIDAR scanning

Abstract: Postprint (published version

Cited by 235 publications

References 32 publications

A Method to Obtain Orange Crop Geometry Information Using a Mobile Terrestrial Laser Scanner and 3D Modeling

A Method to Obtain Orange Crop Geometry Information Using a Mobile Terrestrial Laser Scanner and 3D Modeling

Realistic texture synthesis for point-based fruitage phenotype

Efeito da morfometria da laranjeira na pulverização hidropneumática

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