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Smart turtle farm: soft-shell turtle nesting behavior recognition and monitoring system 智能龟场:软壳龟筑巢行为识别与监测系统
IF 8.9 1区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2026-02-04 DOI: 10.1016/j.compag.2026.111477
Alexander Munyaev , Ben-Lin Jiang , Ing-Jer Huang
Soft-shell turtle farming, a growing aquaculture practice in East and Southeast Asia, involves a pond habitat and a sand-filled spawning area that serves as a nesting site for female turtles. Harvesting these eggs is a labor-intensive and time-consuming task, as farmers must excavate the entire spawning area to ensure all eggs are collected while avoiding damage to buried eggs. Additionally, turtles may inadvertently nest over existing sites, exposing previously buried eggs to a higher risk of damage or consumption by other turtles. Accurate identification of nest locations can significantly reduce farmers’ workload by eliminating unnecessary excavation, while early detection of exposed eggs allows for timely collection, minimizing egg loss, and improving productivity. To address these challenges, we present a real-time AI-based monitoring system to detect soft-shell turtle nesting behavior and exposed eggs. The system integrates YOLOv7 for detecting turtles and exposed eggs, object tracking to monitor turtle movements, and an LSTM-based spatio-temporal model to recognize nesting behaviors. YOLOv7 achieved an average precision (AP) of 98.9% for turtle detection and 88.8% for exposed egg detection, while the LSTM-based model demonstrated 95.73% accuracy and 98.64% recall for recognizing nesting activity. During the 2022 nesting season, spanning 245 days, the system identified 1,713 nests and saved 76.62% of the egg-harvesting efforts, as farmers no longer needed to excavate the entire spawning site. This efficient, non-invasive approach minimizes egg loss, optimizes farm management, and highlights the potential of precision livestock technologies to enhance productivity and sustainability in soft-shell turtle farming.
软壳龟养殖是东亚和东南亚日益增长的一种水产养殖方式,它包括一个池塘栖息地和一个充满沙子的产卵区,作为雌龟的筑巢地。收获这些卵是一项劳动密集型和耗时的任务,因为农民必须挖掘整个产卵区域,以确保收集到所有的卵,同时避免损坏埋藏的卵。此外,海龟可能会无意中在现有的地点筑巢,使以前埋在地下的蛋暴露在更高的风险中,被其他海龟破坏或吃掉。通过消除不必要的挖掘,准确识别巢穴位置可以大大减少农民的工作量,而早期发现暴露的鸡蛋可以及时收集,最大限度地减少鸡蛋损失,并提高生产力。为了解决这些挑战,我们提出了一个基于人工智能的实时监测系统来检测软壳龟的筑巢行为和暴露的蛋。该系统集成了YOLOv7用于检测海龟和暴露的卵,目标跟踪用于监测海龟的运动,以及基于lstm的时空模型用于识别筑巢行为。YOLOv7模型识别海龟和暴露蛋的平均准确率分别为98.9%和88.8%,而基于lstm的模型识别筑巢活动的准确率为95.73%,召回率为98.64%。在2022年的产卵季节,跨越245天,该系统识别了1713个巢穴,节省了76.62%的鸡蛋收获工作,因为农民不再需要挖掘整个产卵地点。这种高效、非侵入性的方法最大限度地减少了鸡蛋的损失,优化了农场管理,并突出了精确畜牧业技术在提高软壳龟养殖生产力和可持续性方面的潜力。
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引用次数: 0
Collaborative motion planning for multi-arm tea-picking robots 多臂采茶机器人协同运动规划
IF 8.9 1区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2026-02-03 DOI: 10.1016/j.compag.2026.111470
Jiangming Jia , Yujie Li , Xiang Wang , Taojie Yu , Jianneng Chen , Yujie Zhou , Chuanyu Wu
To improve the picking efficiency of tea-picking robots, this study proposes a multi-arm collaborative motion planning approach designed for unstructured tea-plantation environments. The proposed approach consists of collaborative picking methods based on arm priority allocation and an improved AtRRT-Connect trajectory planning algorithm to achieve efficient multi-arm coordination and collision avoidance. The algorithm introduces the target gravity and adaptive parameter adjustment strategy, and employs Bézier curves for trajectory smoothing. Simulation results show that under the same tea shoot distributions, the proposed collaborative picking methods achieve full coverage of the workspace. In comparison, the baseline RRT-Connect algorithm exhibited a 100% trajectory generation rejection rate in certain dense segments, whereas the proposed AtRRT-Connect algorithm successfully generated feasible trajectories for all test samples, and significance analysis of the simulated experimental data revealed that both trajectory generation time and trajectory length differed significantly (p < 0.01). In field experiments, the four-arm tea-picking robot picked a single shoot in a mean time of 1.22 s while ensuring collision-free. The comprehensive mean single-shoot picking time was 1.37 s, representing a 20.9% improvement over traditional methods, confirming the effectiveness of the proposed approach.
为了提高采茶机器人的采茶效率,本研究提出了一种针对非结构化茶园环境的多臂协同运动规划方法。该方法包括基于臂优先级分配的协同拾取方法和改进的AtRRT-Connect轨迹规划算法,以实现高效的多臂协调和避碰。该算法引入目标重力和自适应参数调整策略,采用bsamizier曲线进行轨迹平滑。仿真结果表明,在相同的茶叶分布情况下,所提出的协同采摘方法实现了工作空间的全覆盖。相比之下,基线RRT-Connect算法在某些密集路段的轨迹生成拒绝率为100%,而本文提出的AtRRT-Connect算法对所有测试样本都成功生成了可行轨迹,模拟实验数据的显著性分析显示,轨迹生成时间和轨迹长度差异显著(p < 0.01)。在现场实验中,四臂采茶机器人在保证无碰撞的情况下,平均时间为1.22秒。综合平均单次采摘时间为1.37 s,比传统方法提高20.9%,证实了该方法的有效性。
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引用次数: 0
Apple damages classification: Using the best convolutional neural network to discard low surface quality fruit in packing plants 苹果损伤分类:采用最佳卷积神经网络对包装厂表面质量较低的水果进行丢弃
IF 8.9 1区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2026-02-03 DOI: 10.1016/j.compag.2026.111489
Martín Molina , Julio Godoy , John W. Castro , Vladimir Riffo
In an era where global apple production exceeds 80 million tons annually, ensuring high fruit quality is essential for consumer satisfaction and economic success. However, surface defects like wounds, rot, and sunburn cause millions in losses through manual inspections, which are often subjective, inefficient, and costly in packing plants. This study fills important gaps in automated quality control by using advanced deep learning to classify apple damages with unmatched efficiency and industrial usefulness. Through a review of the literature and various web repositories that include information up to 2025, we constructed a novel, balanced dataset from scratch, capturing diverse real-world defects that were underrepresented in previous studies. We rigorously evaluated nine advanced convolutional neural network architectures –including VGG16/19, multiple ResNet variants, and YOLOv9c for classifying different types of damage in apples– before optimizing the top-performing ResNet101 through systematic hyperparameter tuning. Achieving an impressive 95% accuracy on unseen data for damage classification and 81% for preliminary detection, our optimized model aims to reduce waste and boost supply chain efficiency, setting a new standard for sustainable agriculture. Moving forward, this framework opens the door to multimodal integrations such as hyperspectral imaging and robotic sorting, adaptable to other fruits, transforming post-harvest processing and inspiring further innovations in AI-driven food security.
在全球苹果产量每年超过8000万吨的时代,确保高质量的水果对消费者满意和经济成功至关重要。然而,表面缺陷,如伤口、腐烂和晒伤,通过人工检查造成数百万美元的损失,这些检查通常是主观的、低效的、昂贵的。这项研究填补了自动化质量控制的重要空白,利用先进的深度学习对苹果损伤进行分类,具有无与伦比的效率和工业实用性。通过对文献和各种网络存储库的回顾,包括到2025年的信息,我们从头开始构建了一个新的,平衡的数据集,捕获了在以前的研究中未被充分代表的各种现实世界缺陷。我们严格评估了九种先进的卷积神经网络架构——包括VGG16/19、多种ResNet变体和用于分类苹果不同类型损伤的YOLOv9c——然后通过系统超参数调整优化了表现最好的ResNet101。我们的优化模型在未见数据上实现了令人印象深刻的95%的损伤分类准确率和81%的初步检测准确率,旨在减少浪费,提高供应链效率,为可持续农业树立新标准。展望未来,该框架为多模式整合打开了大门,如高光谱成像和机器人分拣,适用于其他水果,改变收获后加工,并激发人工智能驱动的粮食安全方面的进一步创新。
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引用次数: 0
CALDS-RTDETR: a robust forestry pest detection model for small targets in complex environments CALDS-RTDETR:复杂环境中小目标的鲁棒林业害虫检测模型
IF 8.9 1区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2026-02-03 DOI: 10.1016/j.compag.2026.111482
Wenjun Luo , Haiyan Zhang , Limeng Xu
The timely and accurate detection of forest pests is crucial for protecting ecosystems and maintaining ecological balance, as it directly affects the efficacy of pest control measures. Although deep learning is widely used for forest pest detection, challenges remain due to the small size of pests, complex environments, and their diverse morphologies across developmental stages. Traditional detection models often underperform in these environments. To overcome these challenges, we propose CALDS-RTDETR, an enhanced RT-DETR model designed specifically for detecting small pests in complex forest environments. We evaluated the model on a real-world dataset comprising 15 pest species. Compared to the RT-DETR-R18 baseline, CALDS-RTDETR achieved a precision of 75.5%, recall of 61.8%, mAP0.5 of 63.8%, mAP0.75 of 49.7%, and mAP0.5:0.95 of 45.3%. It also attained an mAPs of 8.9%, mAPm of 31.1%, and mAPl of 54.4%, while maintaining a compact model size of 20.10 M parameters. These results show the model’s enhanced performance in complex forest environments, demonstrating the significant potential of CALDS-RTDETR for pest monitoring and practical deployment. Future work will expand the model to include additional species and optimize it for real-world applications.
及时、准确地发现森林有害生物,对保护生态系统、维护生态平衡至关重要,直接影响到防治措施的效果。尽管深度学习被广泛用于森林害虫检测,但由于害虫的体积小,环境复杂,以及它们在发育阶段的不同形态,仍然存在挑战。传统的检测模型在这些环境中往往表现不佳。为了克服这些挑战,我们提出了CALDS-RTDETR模型,这是一种增强的RT-DETR模型,专门用于在复杂的森林环境中检测小型害虫。我们在包含15种害虫的真实数据集上评估了该模型。与RT-DETR-R18基线相比,CALDS-RTDETR的准确率为75.5%,召回率为61.8%,mAP0.5为63.8%,mAP0.75为49.7%,mAP0.5:0.95为45.3%。在保持20.10 M参数的紧凑模型尺寸的同时,该模型的map值为8.9%,mAPm值为31.1%,mAPl值为54.4%。这些结果表明,该模型在复杂的森林环境中具有更高的性能,显示了CALDS-RTDETR在有害生物监测和实际部署方面的巨大潜力。未来的工作将扩展模型,包括更多的物种,并对其进行优化,以适应现实世界的应用。
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引用次数: 0
In-situ decomposition sensor output correlates with soil health indicators 原位分解传感器输出与土壤健康指标相关
IF 8.9 1区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2026-02-02 DOI: 10.1016/j.compag.2026.111427
Taylor J. Sharpe , Madhur Atreya , Shangshi Liu , Mengyi Gong , Nicole Luna , Noah Smock , Jessica Davies , John N. Quinton , Richard D. Bardgett , Jason C. Neff , Rebecca Killick , Gregory L. Whiting
Monitoring of soil microbiological processes can inform strategies to improve soil health and agricultural productivity. Biological soil health measurements are currently difficult to make in-situ and in real time, usually involving manual sampling and laboratory analysis. This is costly, time consuming, resource intensive, and cannot measure changes at high temporal and spatial resolution, limiting the ability to make prompt informed land management decisions. Low-cost soil sensors manufactured using printing techniques offer a potential scalable solution to these issues. Here, we tested the use of novel sensors for the proxy evaluation of soil microbial processes, hypothesizing that sensor decomposition rates may be related to manual soil sampling measurements. This is the first multi-plot field deployment of sensors which use a biodegradable composite conductor to transduce microbial decomposition of substrates to a change in electrical resistance, providing time-series decomposition rate data. Sensors were installed for 50 days across 44 experimental plots of a long-term grassland experiment with varying historical treatments and significant differences in soil microbial activity. Early failures and unresponsive substrates reduced the included sensor count to 31. Measurements commonly used as soil health indicators, including microbial biomass and enzymatic activities related to nutrient cycling, were determined using standard laboratory methods and compared to sensor responses. Three statistical approaches found positive correlations between the sensor signal and laboratory measurements of microbial biomass carbon and soil organic carbon, and some approaches found weaker correlations with enzymatic measurements. Although this experiment is limited in scope to a single experimental field and season, these initial findings show promise for enabling the proxy measurement of soil microbial processes in-situ using low-cost, scalable printed sensors.
监测土壤微生物过程可以为改善土壤健康和农业生产力的战略提供信息。生物土壤健康测量目前很难进行现场和实时,通常涉及人工采样和实验室分析。这种方法成本高、耗时长、资源密集,而且无法以高时间和空间分辨率测量变化,限制了迅速做出明智的土地管理决策的能力。使用打印技术制造的低成本土壤传感器为这些问题提供了一种潜在的可扩展解决方案。在这里,我们测试了使用新型传感器对土壤微生物过程的代理评估,假设传感器分解率可能与人工土壤采样测量有关。这是首次在多地块现场部署传感器,该传感器使用可生物降解的复合导体,将微生物对基质的分解转化为电阻的变化,提供时间序列分解速率数据。在不同历史处理和土壤微生物活性显著差异的44个试验区进行了50天的长期草地试验。早期故障和无响应的衬底将传感器计数减少到31个。通常用作土壤健康指标的测量,包括与养分循环有关的微生物生物量和酶活性,使用标准实验室方法确定,并与传感器响应进行比较。三种统计方法发现传感器信号与微生物生物量碳和土壤有机碳的实验室测量值呈正相关,一些方法发现与酶测量值的相关性较弱。虽然该实验的范围仅限于单个实验场地和季节,但这些初步发现表明,使用低成本、可扩展的印刷传感器,可以实现土壤微生物过程的原位替代测量。
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引用次数: 0
MCDA: a novel domain adaptation with multiple classifiers for crop mapping MCDA:一种具有多分类器的作物映射领域自适应算法
IF 8.9 1区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2026-02-02 DOI: 10.1016/j.compag.2026.111450
Changhong Xu , Maofang Gao , Yuanwei Chen , Jingwen Yan
Accurate crop mapping is conducive to optimizing agricultural production, improving resource utilization efficiency, as well as supporting precision agriculture management and environmental monitoring. However, crop mapping often relies on a large amount of reference data as labels. Moreover, the generalization and scalability of approaches are challenging issues due to the influence of geographic locations, climatic conditions, and crop characteristics. Thereby, this study proposed the Domain Adaptation with Multiple Classifiers (MCDA) model that enables crop mapping in target domains without reference data, which consists of a feature extractor and three classifiers. Initially, the data from the source domain was trained using the feature extractor and individual classifier. Next, the feature extractor was fixed and two classifiers were trained. The decision boundaries of classifiers were maximized by calculating discrepancies between different classification results in target domain. Finally, the two classifiers were fixed and the feature extractor was trained to map the data from the source domain and target domain into a better feature space. In this study, three sets of experiments were designed to validate the stability and generalization of MCDA model by selecting different study areas in four countries to classify typical crops such as maize and winter wheat, rice, and soybeans using time series Vegetation Indices (VIs). Comparing the 1DCNN and LSTM models, as well as the four UDA models, the experimental results indicate that the MCDA model outperforms the other models in most transfer cases. With the appropriate selection of crop features, the method proposed in this study can achieve more accurate crop mapping effectively identifying crop types and field boundaries. The implementation code of our method has been publicly available at https://github.com/abbyxuchanghong-cmd/MCDA.
准确的作物测图有利于优化农业生产,提高资源利用效率,支持精准农业管理和环境监测。然而,作物映射通常依赖于大量的参考数据作为标签。此外,由于地理位置、气候条件和作物特性的影响,方法的泛化和可扩展性是具有挑战性的问题。为此,本研究提出了一种无需参考数据即可实现目标域作物映射的多分类器域适应模型(Domain Adaptation with Multiple Classifiers, MCDA),该模型由一个特征提取器和三个分类器组成。首先,使用特征提取器和个体分类器对源域的数据进行训练。然后,固定特征提取器,训练两个分类器。通过计算目标域内不同分类结果之间的差异,最大化分类器的决策边界。最后,固定两个分类器,训练特征提取器将源域和目标域的数据映射到更好的特征空间。为了验证MCDA模型的稳定性和泛化性,本研究设计了3组实验,选取4个国家的不同研究区域,利用时间序列植被指数(VIs)对玉米、冬小麦、水稻和大豆等典型作物进行分类。对比1DCNN和LSTM模型以及4种UDA模型,实验结果表明MCDA模型在大多数迁移情况下都优于其他模型。通过对作物特征的适当选择,本研究方法可以实现更精确的作物作图,有效识别作物类型和田间边界。我们的方法的实现代码可以在https://github.com/abbyxuchanghong-cmd/MCDA上公开获得。
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引用次数: 0
Operationalizing water rights reform in irrigation districts using a water accounting–based decision support system and automated operating strategies 利用基于水会计的决策支持系统和自动化操作战略,在灌溉区实施水权改革
IF 8.9 1区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2026-02-02 DOI: 10.1016/j.compag.2026.111476
S. Mehdy Hashemy Shahdany , Amir Reza Khakpour , Reza Rejaie
An operating framework for surface-water distribution in irrigation districts was developed by linking SEEA-Water accounting Physical Supply–Use Tables (PSUTs) to canal control through a decision support system (DSS). The method included: (i) hydraulic simulation of canal flow using an Integral Delay (ID) model; (ii) development of decentralized Proportional-Integral (PI) and centralized Model Predictive Control (MPC) operating systems; (iii) integration of Standard Operating Procedures (SOPs) with hydraulic and operational models to simulate daily water distribution; and (iv) translation of SEEA-PSUT surface water-rights allocations into controller setpoints in the DSS. Spatio-temporal simulations, conducted under seven scenarios ranging from normal to severe water shortage conditions, assessed surface water distribution and groundwater abstraction for PI, MPC, and manual-based SOPs. Following modifications to water rights derived from PSUTs, simulations were repeated. Results demonstrated significant performance improvements with MPC-SOP (23–37% water recovery), notable enhancements with Automatic PI-SOP (12–18% water recovery), and marginal improvements with Manual-SOP (2–10% water recovery). The approach converts accounting reform into operational rules, delivering measurable efficiency gains and supporting sustainable irrigation management.
通过决策支持系统(DSS)将SEEA-Water会计物理供应-使用表(PSUTs)与运河控制联系起来,制定了灌区地表水分配的操作框架。方法包括:(1)利用积分延迟(ID)模型对渠道流动进行水力模拟;(ii)分散式比例积分(PI)和集中式模型预测控制(MPC)操作系统的发展;(iii)将标准作业程序与水力及运作模式结合,模拟日常配水情况;(iv)将SEEA-PSUT地表水权分配转换为DSS的控制设定值。在从正常到严重缺水的7种情况下进行了时空模拟,评估了PI、MPC和基于手册的sop的地表水分布和地下水开采。在对PSUTs衍生的水权进行修改后,再次进行了模拟。结果表明,MPC-SOP可显著提高性能(含水率为23-37%),自动PI-SOP可显著提高性能(含水率为12-18%),手动sop可略微提高性能(含水率为2-10%)。该方法将会计改革转化为操作规则,带来可衡量的效率提高,并支持可持续灌溉管理。
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引用次数: 0
Innovative photosynthesis model twinning after intelligent interpretation of complex sensor analytics 在复杂传感器分析的智能解释后,创新的光合作用模型孪生
IF 8.9 1区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2026-01-31 DOI: 10.1016/j.compag.2026.111496
Xiaotong Wang , Xuejiao Tong , Bingguang Han , Zhulin Li , Qingji Li , Xianmin Liu , Zhouping Sun , Nick Sigrimis , Tianlai Li
Accurate canopy photosynthesis modeling is essential for understanding and optimizing crop growth and yield in greenhouse agriculture. Current models have limited predictive capability due to inadequate responsiveness to dynamic environments and delays in parameter acquisition, making accurate predictions challenging under the complex conditions of solar greenhouses. This study aimed to develop a dynamic canopy photosynthesis model for greenhouse tomatoes, leveraging an IoT sensor network for real-time biological feedback and parameterization. By integrating real-time monitoring with dynamic feedback, the model facilitates precision management of greenhouse tomato cultivation, thereby optimizing plant growth, resource use efficiency, and yield predictability. To achieve this, a non-destructive inversion method based on a dual weighing system was developed, enabling accurate dynamic monitoring of tomato canopy leaf area index (LAI, R2 ≥ 0.94) and the photosynthetic leaf area index (LAIp, R2 ≥ 0.91), continuously providing parameters for updating modelling (validated against destructive sampling and actual measurements for trait specifics). Based on accurate parameter acquisition, a dynamic canopy photosynthesis model was developed using LAIp as the core variable, integrating above-canopy radiation. A newly developed parameter, which integrates the radiation component of transpiration, serves as a key factor for estimating photosynthesis. This innovative approach allows for accurate daily prediction and assessment of assimilated biomass. Experimental results from 2022 and 2023 showed that the LAIp model performed better than the comparison model, showing higher accuracy and adaptability (R2 = 0.87 and 0.89, NRMSE = 0.17 and 0.12 vs. R2 = 0.70 and 0.80, NRMSE = 0.26 and 0.15). These results confirmed the reliability of the integrated modeling framework, which forms a closed-loop system connecting real-time plant monitoring, statistical parameter inversion, online model adaptation, and biomass feedback verification. This modeling approach provides a solid foundation for precise growth simulation, sustainably improving yield and quality in solar greenhouse tomatoes, and advancing digital twin-enabled intelligent production.
准确的冠层光合作用模型对了解和优化温室农业作物生长和产量至关重要。由于对动态环境的响应能力不足和参数获取的延迟,当前模型的预测能力有限,在复杂的太阳温室条件下进行准确预测具有挑战性。本研究旨在开发温室番茄的动态冠层光合作用模型,利用物联网传感器网络进行实时生物反馈和参数化。该模型将实时监测与动态反馈相结合,实现温室番茄种植的精准管理,从而优化植株生长、资源利用效率和产量可预测性。为此,开发了一种基于双称重系统的无损反演方法,实现了对番茄冠层叶面积指数(LAI, R2≥0.94)和光合叶面积指数(LAIp, R2≥0.91)的精确动态监测,为更新模型提供了持续的参数(通过破坏性采样和性状细节的实际测量验证)。在准确获取参数的基础上,以叶片光合速率为核心变量,考虑冠层上辐射,建立了动态冠层光合作用模型。一个新提出的综合蒸腾辐射分量的参数是估算光合作用的关键因子。这种创新的方法允许对同化生物量进行准确的每日预测和评估。2022年和2023年的实验结果表明,LAIp模型优于比较模型,具有更高的准确性和适应性(R2 = 0.87和0.89,NRMSE = 0.17和0.12,R2 = 0.70和0.80,NRMSE = 0.26和0.15)。这些结果证实了集成建模框架的可靠性,该框架形成了一个连接实时植物监测、统计参数反演、在线模型自适应和生物量反馈验证的闭环系统。这种建模方法为精确的生长模拟,可持续地提高日光温室番茄的产量和质量,以及推进数字孪生智能生产提供了坚实的基础。
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引用次数: 0
WeedCAM: An edge-computing camera system for multi-species weed detection in sugar beet production fields WeedCAM:用于甜菜生产领域多品种杂草检测的边缘计算摄像系统
IF 8.9 1区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2026-01-31 DOI: 10.1016/j.compag.2026.111498
Zonglin Yang , Wei-Zhen Liang , Nevin Lawrence , Xin Qiao , Benjamin Riggan , Robert Harveson , Chi-En Chiang , Joseph Oboamah , Diwenitissiou Philipine Andjawo
This study introduces WeedCAM, a low-cost, near real-time, edge-computing camera system for multi-species weed detection, built on a Raspberry Pi 5 and integrated with a GPS module and LoRa board for geolocation and data transmission. A three-phase framework, including data acquisition, model fine-tuning, and deployment, is proposed to implement detection models on WeedCAM. A total of 5734 high-resolution (4K) images were automatically collected using WeedCAM, producing a dataset with a long-tail distribution that poses challenges for model training. To address this, Repeat Factor Sampling and Focal Loss were applied during the fine-tuning. Seven object detection models were evaluated, including YOLOX-S, YOLOX-L, Faster R-CNN, Cascade R-CNN, Deformable-DETR, and DINO. Finally, WeedCAMs with embedded trained models were deployed in the field on pivot-mounted and ground-based installations, detecting weeds at 30-min intervals and transmitting results to a customized gateway via LoRa. The gateway parsed and mapped these results to our custom-designed website for visualization. Our best model, DINO-Swin/L, set the performance benchmark with a 76.0 overall mAP (IoU = 0.5) and strong per-species scores for kochia (76.4 mAP), Palmer amaranth (77.3 mAP), and volunteer corn (75.9 mAP) at 4K resolution image. Despite this, YOLOX-L was deployed on the WeedCAM, as its efficient 8-min processing cycle represented the better trade-off between accuracy and speed. Field evaluation confirmed that WeedCAM effectively identified weed species and quantities under varying lighting conditions, camera angles, and soil moisture levels during irrigation events. These results demonstrate the practicality of deploying WeedCAM edge-computing deep learning systems for near real-time, multi-species weed detection under sugar beet fields.
本研究介绍了WeedCAM,一种低成本、近实时的边缘计算相机系统,用于多物种杂草检测,建立在树莓派5上,集成了GPS模块和LoRa板,用于地理定位和数据传输。提出了一个包括数据采集、模型微调和部署的三阶段框架来实现WeedCAM上的检测模型。使用WeedCAM自动收集了5734张高分辨率(4K)图像,生成了一个具有长尾分布的数据集,这对模型训练提出了挑战。为了解决这个问题,在微调期间应用了重复因子采样和焦点损失。评估了7种目标检测模型,包括YOLOX-S、YOLOX-L、Faster R-CNN、Cascade R-CNN、deformation - detr和DINO。最后,将带有嵌入式训练模型的WeedCAMs部署在枢轴安装和地面装置上,每隔30分钟检测一次杂草,并通过LoRa将结果传输到定制网关。该网关解析并将这些结果映射到我们定制设计的可视化网站。我们的最佳模型DINO-Swin/L设置了性能基准,总体mAP为76.0 (IoU = 0.5),在4K分辨率图像下,kochia (76.4 mAP), Palmer苋菜(77.3 mAP)和志愿者玉米(75.9 mAP)的每种得分都很高。尽管如此,由于其高效的8分钟处理周期在精度和速度之间取得了更好的平衡,YOLOX-L被部署在WeedCAM上。现场评估证实,在灌溉期间,WeedCAM在不同的光照条件、相机角度和土壤湿度水平下有效地识别了杂草的种类和数量。这些结果证明了在甜菜地里部署WeedCAM边缘计算深度学习系统进行近实时、多品种杂草检测的实用性。
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引用次数: 0
Detection of Potato Virus Y in plant foliage using convolutional neural network classifiers and hyperspectral imagery 利用卷积神经网络分类器和高光谱图像检测马铃薯叶片Y病毒
IF 8.9 1区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2026-01-30 DOI: 10.1016/j.compag.2026.111499
L.M. Griffel, D. Delparte
Solanum tuberosum (potato) is one of the most important global food crops relative to economic opportunities and food security. Potato Virus Y (Potyviridae, PVY), a detrimental plant pathogen propagated by insect vectors, negatively affects tuber yield and quality. This has forced industry stakeholders to adopt many different types of mitigation strategies including pesticide applications, manual field scouting, and potato seed certification programs. Despite these efforts, PVY continues to disrupt industry production regions resulting in significant economic losses due to the lack of robust diagnostic tools. Machine learning algorithms trained on remotely sensed spectral features show promise as a diagnostic tool for many plant diseases including PVY. This study proposes a novel Convolutional Neural Network (CNN) architecture to detect potato plant canopy regions of plants infected with PVY based on unmanned aerial system (UAS) hyperspectral pixel features comprised of bands matching the center wavelengths of nine spectral channels captured by the European Space Agency’s Sentinel 2 multispectral instrument. Accuracy and F1 metrics of 0.815 and 0.766 respectively were achieved on test data collected over multiple growing seasons and locations. Additionally, efforts were made to identify optimal combinations of spectral bands that are most beneficial for the CNN classifier by evaluating every possible combination of the nine spectral wavelengths in groups ranging from 3 to 9 channels. Results show that hyperspectral channels centered on 783 nm, 739 nm, and 560 nm are the most important features for the CNN architecture. Additionally, six hyperspectral features consisting of the three previously mentioned along with 665 nm, 704 nm, and 864 nm yielded the best results of all possible combinations achieving accuracy and F1 Score metrics of 0.833 and 0.791 respectively.
马铃薯(Solanum tuberosum)是全球最重要的经济机会和粮食安全粮食作物之一。马铃薯Y型病毒(Potyviridae, PVY)是一种通过昆虫媒介传播的有害植物病原体,对薯类产量和品质产生负面影响。这迫使行业利益相关者采取许多不同类型的缓解策略,包括农药应用,人工田间侦察和马铃薯种子认证计划。尽管做出了这些努力,但由于缺乏强大的诊断工具,PVY继续破坏行业生产区域,导致重大经济损失。基于遥感光谱特征训练的机器学习算法有望成为包括PVY在内的许多植物病害的诊断工具。本研究提出了一种新颖的卷积神经网络(CNN)架构,基于无人机系统(UAS)高光谱像素特征,该特征由与欧洲航天局Sentinel 2多光谱仪器捕获的9个光谱通道的中心波长相匹配的波段组成,用于检测受PVY感染的马铃薯植物冠层区域。在多个生长季节和地点采集的试验数据,精度和F1指标分别为0.815和0.766。此外,通过评估3到9个通道组中9个光谱波长的每种可能组合,努力识别最有利于CNN分类器的光谱波段的最佳组合。结果表明,以783 nm、739 nm和560 nm为中心的高光谱通道是CNN架构的最重要特征。此外,665 nm、704 nm和864 nm组成的6个高光谱特征在所有可能组合中获得了最佳结果,精度和F1 Score指标分别为0.833和0.791。
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引用次数: 0
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Computers and Electronics in Agriculture
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