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Enhancing crop yield prediction in Senegal using advanced machine learning techniques and synthetic data 利用先进的机器学习技术和合成数据加强塞内加尔的作物产量预测
IF 8.2 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2024-12-01 DOI: 10.1016/j.aiia.2024.11.005
Mohammad Amin Razavi , A. Pouyan Nejadhashemi , Babak Majidi , Hoda S. Razavi , Josué Kpodo , Rasu Eeswaran , Ignacio Ciampitti , P.V. Vara Prasad
In this study, we employ advanced data-driven techniques to investigate the complex relationships between the yields of five major crops and various geographical and spatiotemporal features in Senegal. We analyze how these features influence crop yields by utilizing remotely sensed data. Our methodology incorporates clustering algorithms and correlation matrix analysis to identify significant patterns and dependencies, offering a comprehensive understanding of the factors affecting agricultural productivity in Senegal. To optimize the model's performance and identify the optimal hyperparameters, we implemented a comprehensive grid search across four distinct machine learning regressors: Random Forest, Extreme Gradient Boosting (XGBoost), Categorical Boosting (CatBoost), and Light Gradient-Boosting Machine (LightGBM). Each regressor offers unique functionalities, enhancing our exploration of potential model configurations. The top-performing models were selected based on evaluating multiple performance metrics, ensuring robust and accurate predictive capabilities. The results demonstrated that XGBoost and CatBoost perform better than the other two. We introduce synthetic crop data generated using a Variational Auto Encoder to address the challenges posed by limited agricultural datasets. By achieving high similarity scores with real-world data, our synthetic samples enhance model robustness, mitigate overfitting, and provide a viable solution for small dataset issues in agriculture. Our approach distinguishes itself by creating a flexible model applicable to various crops together. By integrating five crop datasets and generating high-quality synthetic data, we improve model performance, reduce overfitting, and enhance realism. Our findings provide crucial insights for productivity drivers in key cropping systems, enabling robust recommendations and strengthening the decision-making capabilities of policymakers and farmers in data-scarce regions.
在这项研究中,我们采用先进的数据驱动技术来研究塞内加尔五种主要作物的产量与各种地理和时空特征之间的复杂关系。我们利用遥感数据分析了这些特征如何影响作物产量。我们的方法结合了聚类算法和相关矩阵分析,以确定重要的模式和依赖关系,从而全面了解影响塞内加尔农业生产力的因素。为了优化模型的性能并识别最优超参数,我们在四个不同的机器学习回归量上实现了全面的网格搜索:随机森林、极端梯度增强(XGBoost)、分类增强(CatBoost)和光梯度增强机(LightGBM)。每个回归器提供了独特的功能,增强了我们对潜在模型配置的探索。在评估多个性能指标的基础上选择了性能最好的模型,确保了稳健和准确的预测能力。结果表明,XGBoost和CatBoost的性能优于其他两种。我们介绍了使用变分自动编码器生成的合成作物数据,以解决有限农业数据集带来的挑战。通过实现与真实世界数据的高相似性得分,我们的合成样本增强了模型的鲁棒性,减轻了过拟合,并为农业中的小数据集问题提供了可行的解决方案。我们的方法的独特之处在于创建了一个灵活的模型,可以同时适用于各种作物。通过整合五种作物数据集并生成高质量的合成数据,我们提高了模型性能,减少了过拟合,增强了真实感。我们的研究结果为关键种植系统的生产力驱动因素提供了重要见解,为数据稀缺地区的决策者和农民提供了强有力的建议,并加强了他们的决策能力。
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引用次数: 0
Neural network architecture search enabled wide-deep learning (NAS-WD) for spatially heterogenous property awared chicken woody breast classification and hardness regression 用于空间异质属性感知鸡木质胸脯分类和硬度回归的神经网络架构搜索(NAS-WD)
IF 8.2 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2024-11-15 DOI: 10.1016/j.aiia.2024.11.003
Chaitanya Pallerla , Yihong Feng , Casey M. Owens , Ramesh Bahadur Bist , Siavash Mahmoudi , Pouya Sohrabipour , Amirreza Davar , Dongyi Wang
Due to intensive genetic selection for rapid growth rates and high broiler yields in recent years, the global poultry industry has faced a challenging problem in the form of woody breast (WB) conditions. This condition has caused significant economic losses as high as $200 million annually, and the root cause of WB has yet to be identified. Human palpation is the most common method of distinguishing a WB from others. However, this method is time-consuming and subjective. Hyperspectral imaging (HSI) combined with machine learning algorithms can evaluate the WB conditions of fillets in a non-invasive, objective, and high-throughput manner. In this study, 250 raw chicken breast fillet samples (normal, mild, severe) were taken, and spatially heterogeneous hardness distribution was first considered when designing HSI processing models. The study not only classified the WB levels from HSI but also built a regression model to correlate the spectral information with sample hardness data. To achieve a satisfactory classification and regression model, a neural network architecture search (NAS) enabled a wide-deep neural network model named NAS-WD, which was developed. In NAS-WD, NAS was first used to automatically optimize the network architecture and hyperparameters. The classification results show that NAS-WD can classify the three WB levels with an overall accuracy of 95 %, outperforming the traditional machine learning model, and the regression correlation between the spectral data and hardness was 0.75, which performs significantly better than traditional regression models.
近年来,由于对快速生长率和高产肉鸡进行了密集的遗传选育,全球家禽业面临着一个具有挑战性的问题,即鸡胸木质化(WB)问题。这种病症每年造成高达 2 亿美元的重大经济损失,而 WB 的根本原因尚未查明。人体触诊是区分 WB 的最常用方法。然而,这种方法既费时又主观。高光谱成像(HSI)与机器学习算法相结合,能以无创、客观和高通量的方式评估鸡排的 WB 状况。本研究采集了 250 个生鸡胸肉片样本(正常、轻度、重度),在设计 HSI 处理模型时首先考虑了空间异质硬度分布。研究不仅对 HSI 中的 WB 级别进行了分类,还建立了一个回归模型,将光谱信息与样本硬度数据相关联。为了获得令人满意的分类和回归模型,研究人员利用神经网络架构搜索(NAS)开发了名为 NAS-WD 的宽深度神经网络模型。在 NAS-WD 中,NAS 首先用于自动优化网络架构和超参数。分类结果表明,NAS-WD 可以对三个 WB 级别进行分类,总体准确率达到 95%,优于传统的机器学习模型,而且光谱数据与硬度之间的回归相关性为 0.75,明显优于传统的回归模型。
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引用次数: 0
Utility-based regression and meta-learning techniques for modeling actual ET: Comparison to (METRIC-EEFLUX) model 基于效用回归和元学习技术的实际蒸散发建模:与(METRIC-EEFLUX)模型的比较
IF 8.2 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2024-11-14 DOI: 10.1016/j.aiia.2024.11.001
Fatima K. Abu Salem , Sara Awad , Yasmine Hamdar , Samer Kharroubi , Hadi Jaafar
Estimating actual evapotranspiration (ETₐ) is crucial for water resource management, yet existing methods face limitations. Traditional approaches, including eddy covariance and remote sensing-based energy balance methods, often struggle with high costs, limited spatial and temporal coverage, and reduced predictive accuracy, particularly for classical empirical models. While machine learning has emerged as a promising alternative, it still presents challenges, notably in underestimating ETₐ during periods of high heat. We attribute this to insufficient learning on the rare but highly relevant ETₐ values of interest, or the not-so-big climatic datasets available for use. In this manuscript, we demonstrate how few-shot, meta-learning models (MAML) that are specifically designed for enhanced generalizability on not-so-big datasets can outperform basic machine learning models in upscaling ETₐ from two major in-situ towers, the Ameriflux and Euroflux. Using limited remotely sensed land surface data from the METRIC-EEFlux and limited climatic variables, we demonstrate that the chosen models can attain quantifiable utility within the utility-based-regression paradigm towards impactful practical considerations. Our initial explorations reveal that EEflux ETₐ deviates significantly from in-situ observations measured through the Ameriflux and EEflux towers (R2=39%). Instead, MAML shows best performance in approximating ETₐ than basic machine learning algorithms and EEFlux (R2=71% on entire testing dataset, R2=0.88 on the Csa climate, R2=0.79 on the Cfa climate, and R2=0.78 on the CSH vegetation class), and continues to improve without overfitting even when exposed to a relatively small training dataset. Its high F2 score (96 %) indicates that MAML has very high precision and recall for rare cases, which is significant for irrigation. Of independent interest, this study confirms that limited remotely sensed EEflux products contribute significantly to knowledge about ground truth ETₐ and can thus be of valuable use in settings where access to good quality and high-volume data is compromised.
估算实际蒸散量(ETₐ)对水资源管理至关重要,但现有方法存在局限性。传统方法,包括涡度协方差法和基于遥感的能量平衡法,往往成本高昂、时空覆盖范围有限、预测精度较低,尤其是对于经典的经验模型而言。虽然机器学习已成为一种很有前途的替代方法,但它仍然面临挑战,尤其是在高温期间低估了蒸散发。我们将其归咎于对罕见但高度相关的 ETₐ值学习不足,或可利用的气候数据集不大。在本手稿中,我们展示了在对两个主要原位塔--美国流量塔和欧洲流量塔--进行 ETₐ升级时,专为增强在不大的数据集上的泛化能力而设计的少镜头元学习模型(MAML)如何优于基本的机器学习模型。利用来自 METRIC-EEFlux 的有限遥感地表数据和有限的气候变量,我们证明了所选模型可以在基于效用的回归范式中获得可量化的效用,从而实现有影响力的实际考量。我们的初步探索表明,EEflux ETₐ与通过 Ameriflux 塔和 EEflux 塔测得的现场观测数据(R2=39%)有很大偏差。相反,与基本的机器学习算法和 EEFlux 相比,MAML 在近似 ETₐ 方面表现最佳(在整个测试数据集上 R2=71% ,在 Csa 气候上 R2=0.88 ,在 Cfa 气候上 R2=0.79 ,在 CSH 植被类别上 R2=0.78 )。其较高的 F2 分数(96 %)表明,MAML 对罕见情况具有很高的精确度和召回率,这对灌溉意义重大。这项研究还证实,有限的遥感 EEflux 产品对了解地面真实蒸散发有很大帮助,因此在无法获得高质量、高容量数据的情况下也能发挥重要作用。
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引用次数: 0
Detectability of multi-dimensional movement and behaviour in cattle using sensor data and machine learning algorithms: Study on a Charolais bull 利用传感器数据和机器学习算法检测牛的多维运动和行为:夏洛莱公牛研究
IF 8.2 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2024-11-13 DOI: 10.1016/j.aiia.2024.11.002
Miklós Biszkup , Gábor Vásárhelyi , Nuri Nurlaila Setiawan , Aliz Márton , Szilárd Szentes , Petra Balogh , Barbara Babay-Török , Gábor Pajor , Dóra Drexler
The development of motion sensors for monitoring cattle behaviour has enabled farmers to predict the state of their cattle's welfare more efficiently. While most studies work with one dimensional output with disjunct behaviour categories, more accurate prediction can still be achieved by including complex movements and enriching the sensor algorithm to detect multi-dimensional movements, i.e., more than one movement occurring simultaneously. This paper presents such a machine-learning method for analysing overlapping independent movements. The output of the method consists of automatically recognized complex behaviour patterns that can be used for measuring animal welfare, predicting calving, or detecting early signs of diseases. This study combines automated motion sensors (i.e., halter and pedometer) for ruminants known as RumiWatch mounted on a Charolais fattening bull and camera observation. Fourteen types of complex movements were identified, i.e., defecating-urinating, eating, drinking, getting up, head movement, licking, lying down, lying, playing-aggression, rubbing, ruminating, sleeping, standing, and stepping. As multiple parallel binary classificators were used, the system was able to recognize parallel behavioural patterns with high fidelity. Two types of machine learning, i.e., Support Vector Classification (SVC) and RandomForest were used to recognize different general and non-general forms of movement. Results from these two supervised learning systems were compared. A continuous forty-eight hours of video were annotated to train the systems and validate their predictions. The success rate of both classifiers in recognizing special movements from both sensors or separately in different settings (i.e., window and padding) was examined. Although the two classifiers produced different results, the ideal settings showed that all forms of movement in the subject animal were successfully recognized with high accuracy. More studies using more individual animals and different ruminants would increase our knowledge on enhancing the system's performance and accuracy.
用于监测牛只行为的运动传感器的开发使农民能够更有效地预测牛只的福利状况。虽然大多数研究使用的是一维输出和不相关的行为类别,但如果将复杂的动作包括在内,并丰富传感器算法以检测多维动作(即同时发生多个动作),仍可实现更准确的预测。本文介绍了这种用于分析重叠独立动作的机器学习方法。该方法的输出包括自动识别的复杂行为模式,可用于测量动物福利、预测产犊或检测疾病的早期征兆。这项研究结合了安装在夏洛莱育肥公牛身上的反刍动物自动运动传感器(即缰绳和计步器)(称为 RumiWatch)和摄像头观察。研究发现了 14 种复杂运动,即排便-排尿、进食、饮水、起身、头部运动、舔食、躺下、趴着、玩耍-攻击、摩擦、反刍、睡觉、站立和迈步。由于使用了多个并行二进制分类器,该系统能够高保真地识别并行的行为模式。支持向量分类(SVC)和随机森林(RandomForest)这两种机器学习方法被用于识别不同的一般和非一般运动形式。对这两种监督学习系统的结果进行了比较。对连续 48 小时的视频进行了注释,以训练系统并验证其预测结果。研究还考察了两种分类器在识别来自两个传感器或在不同设置(即窗口和填充)下分别识别特殊运动时的成功率。虽然两种分类器产生的结果不同,但理想的设置表明,受试动物的所有运动形式都能成功识别,而且准确率很高。使用更多的动物个体和不同的反刍动物进行更多的研究将增加我们对提高系统性能和准确性的了解。
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引用次数: 0
Estimating TYLCV resistance level using RGBD sensors in production greenhouse conditions 在生产温室条件下使用 RGBD 传感器估算 TYLCV 抗性水平
IF 8.2 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2024-11-03 DOI: 10.1016/j.aiia.2024.10.004
Dorin Shmaryahu , Rotem Lev Lehman , Ezri Peleg , Guy Shani
Automated phenotyping is the task of automatically measuring plant attributes to help farmers and breeders in developing and growing strong robust plants. An automated tool for early illness detection can accelerate the process of identifying plant resistance and quickly pinpoint problematic breeding. Many such phenotyping tasks can be achieved by analyzing images from simple, low cost, RGB-D sensors. In this paper we focused on a particular case study — identifying the resistance level of tomato hybrids to the tomato yellow leaf curl virus (TYLCV) in production greenhouses. This is a difficult task, as separating between resistance levels based on images is difficult even for expert breeders. We collected a large dataset of images from an experiment containing many tomato hybrids with varying resistance levels. We used the depth information to identify the topmost part of the tomato plant. We then used deep learning models to classify the various resistance levels. For identifying plants with visual symptoms, our methods achieved an accuracy of 0.928, a precision of 0.934, and a recall of 0.95. In the multi-class case we achieved an accuracy of 0.76 in identifying the correct level, and an error of 0.278. Our methods are not particularly tailored for the specific task, and can be extended to other tasks that identify various plant diseases with visual symptoms such as ToBRFV, mildew, ToMV and others.
自动表型分析是一项自动测量植物属性的工作,可帮助农民和育种人员开发和培育健壮的植物。用于早期病害检测的自动化工具可加快确定植物抗性的过程,并快速定位有问题的育种。通过分析来自简单、低成本 RGB-D 传感器的图像,可以完成许多此类表型任务。在本文中,我们重点研究了一个特殊的案例--在生产温室中识别番茄杂交种对番茄黄叶卷曲病毒(TYLCV)的抗性水平。这是一项艰巨的任务,因为即使是育种专家也很难根据图像区分抗性水平。我们从一项实验中收集了大量图像数据集,其中包含许多具有不同抗性水平的番茄杂交种。我们利用深度信息来识别番茄植株的最顶端部分。然后,我们使用深度学习模型对各种抗性水平进行分类。在识别具有视觉症状的植物方面,我们的方法达到了 0.928 的准确率、0.934 的精确率和 0.95 的召回率。在多类情况下,我们识别正确等级的准确率为 0.76,误差为 0.278。我们的方法并不是特别针对特定任务而设计的,可以扩展到其他任务中,如识别具有视觉症状的各种植物病害,如 ToBRFV、霜霉病、ToMV 等。
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引用次数: 0
Development of a cutting-edge ensemble pipeline for rapid and accurate diagnosis of plant leaf diseases 开发用于快速准确诊断植物叶片病害的尖端集合管道
IF 8.2 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2024-11-01 DOI: 10.1016/j.aiia.2024.10.005
S.M. Nuruzzaman Nobel , Maharin Afroj , Md Mohsin Kabir , M.F. Mridha
Selecting techniques is a crucial aspect of disease detection analysis, particularly in the convergence of computer vision and agricultural technology. Maintaining crop disease detection in a timely and accurate manner is essential to maintaining global food security. Deep learning is a viable answer to meet this need. To proceed with this study, we have developed and evaluated a disease detection model using a novel ensemble technique. We propose to introduce DenseNetMini, a smaller version of DenseNet. We propose combining DenseNetMini with a learning resizer in ensemble approach to enhance training accuracy and expedite learning. Another unique proposition involves utilizing Gradient Product (GP) as an optimization technique, effectively reducing the training time and improving the model performance. Examining images at different magnifications reveals noteworthy diagnostic agreement and accuracy improvements. Test accuracy rates of 99.65 %, 98.96 %, and 98.11 % are seen in the Plantvillage, Tomato leaf, and Appleleaf9 datasets, respectively. One of the research's main achievements is the significant decrease in processing time, which suggests that using the GP could improve disease detection in agriculture's accessibility and efficiency. Beyond quantitative successes, the study highlights Explainable Artificial Intelligence (XAI) methods, which are essential to improving the disease detection model's interpretability and transparency. XAI enhances the interpretability of the model by visually identifying critical areas on plant leaves for disease identification, which promotes confidence and understanding of the model's functionality.
选择技术是病害检测分析的一个重要方面,尤其是在计算机视觉与农业技术的融合方面。及时准确地检测作物病害对于维护全球粮食安全至关重要。深度学习是满足这一需求的可行方案。为了开展这项研究,我们利用一种新颖的集合技术开发并评估了一种病害检测模型。我们建议引入 DenseNetMini,它是 DenseNet 的缩小版。我们建议在集合方法中将 DenseNetMini 与学习调整器相结合,以提高训练精度并加快学习速度。另一个独特的主张是利用梯度积(GP)作为优化技术,从而有效缩短训练时间并提高模型性能。对不同放大倍数的图像进行检查后发现,诊断一致性和准确性都有显著提高。Plantvillage 数据集、番茄叶数据集和 Appleleaf9 数据集的测试准确率分别为 99.65%、98.96% 和 98.11%。研究的主要成果之一是显著减少了处理时间,这表明使用 GP 可以提高农业疾病检测的便利性和效率。除了数量上的成功,该研究还强调了可解释人工智能(XAI)方法,这对提高疾病检测模型的可解释性和透明度至关重要。XAI 通过在植物叶片上直观地识别病害识别的关键区域,提高了模型的可解释性,从而增强了对模型功能的信心和理解。
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引用次数: 0
A review of external quality inspection for fruit grading using CNN models 利用 CNN 模型对水果分级的外部质量检测进行审查
IF 8.2 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2024-10-16 DOI: 10.1016/j.aiia.2024.10.002
Luis E. Chuquimarca , Boris X. Vintimilla , Sergio A. Velastin
This article reviews the state of the art of recent CNN models used for external quality inspection of fruits, considering parameters such as color, shape, size, and defects, used to categorize fruits according to international marketing levels of agricultural products. The literature review considers the number of fruit images in different datasets, the type of images used by the CNN models, the performance results obtained by each CNNs, the optimizers that help increase the accuracy of these, and the use of pre-trained CNN models used for transfer learning. CNN models have used various types of images in the visible, infrared, hyperspectral, and multispectral bands. Furthermore, the fruit image datasets used are either real or synthetic. Finally, several tables summarize the articles reviewed, which are prioritized according to inspection parameters, facilitating a critical comparison of each work.
本文综述了近期用于水果外部质量检测的 CNN 模型的最新技术水平,考虑了水果的颜色、形状、大小和缺陷等参数,用于根据农产品的国际营销水平对水果进行分类。文献综述考虑了不同数据集中的水果图像数量、CNN 模型使用的图像类型、每个 CNN 获得的性能结果、有助于提高准确性的优化器,以及用于迁移学习的预训练 CNN 模型的使用情况。CNN 模型使用了可见光、红外、高光谱和多光谱波段的各类图像。此外,所使用的水果图像数据集要么是真实的,要么是合成的。最后,几个表格总结了所查阅的文章,并根据检测参数进行了优先排序,以便于对每项工作进行批判性比较。
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引用次数: 0
Automatic location and recognition of horse freezing brand using rotational YOLOv5 deep learning network 使用旋转 YOLOv5 深度学习网络自动定位和识别马匹冷冻品牌
IF 8.2 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2024-10-10 DOI: 10.1016/j.aiia.2024.10.003
Zhixin Hua , Yitao Jiao , Tianyu Zhang , Zheng Wang , Yuying Shang , Huaibo Song
Individual livestock identification is of great importance to precision livestock farming. Liquid nitrogen freezing labeled horse brand is an effective way for livestock individual identification. Along with various technological developments, deep-learning-based methods have been applied in such individual marking recognition. In this research, a deep learning method for oriented horse brand location and recognition was proposed. Firstly, Rotational YOLOv5 (R-YOLOv5) was adopted to locate the oriented horse brand, then the cropped images of the brand area were trained by YOLOv5 for number recognition. In the first step, unlike classical detection methods, R-YOLOv5 introduced the orientation into the YOLO framework by integrating Circle Smooth Label (CSL). Besides, Coordinate Attention (CA) was added to raise the attention to positional information in the network. These improvements enhanced the accuracy of detecting oriented brands. In the second step, number recognition was considered as a target detection task because of the requirement of accurate recognition. Finally, the whole brand number was obtained according to the sequences of each detection box position. The experiment results showed that R-YOLOv5 outperformed other rotating target detection algorithms, and the AP (Average Accuracy) was 95.6 %, the FLOPs were 17.4 G, the detection speed was 14.3 fps. As for the results of number recognition, the mAP (mean Average Accuracy) was 95.77 %, the weight size was 13.71 MB, and the detection speed was 68.6 fps. The two-step method can accurately identify brand numbers with complex backgrounds. It also provides a stable and lightweight method for livestock individual identification.
牲畜个体识别对精准畜牧业具有重要意义。液氮冷冻标记马匹品牌是牲畜个体识别的有效方法。随着各种技术的发展,基于深度学习的方法已被应用于此类个体标记识别。本研究提出了一种用于定向马匹烙印定位和识别的深度学习方法。首先,采用旋转 YOLOv5(R-YOLOv5)对定向马匹烙印进行定位,然后用 YOLOv5 对烙印区域的裁剪图像进行数字识别训练。第一步,与传统检测方法不同,R-YOLOv5 通过整合圆光滑标签(CSL)将方向引入 YOLO 框架。此外,还加入了坐标注意(CA),以提高对网络中位置信息的关注度。这些改进提高了检测定向品牌的准确性。第二步,数字识别被视为目标检测任务,因为需要准确识别。最后,根据每个检测框位置的序列得到整个品牌的编号。实验结果表明,R-YOLOv5 的性能优于其他旋转目标检测算法,平均准确率为 95.6%,FLOPs 为 17.4 G,检测速度为 14.3 fps。至于数字识别结果,mAP(平均准确率)为 95.77 %,权重大小为 13.71 MB,检测速度为 68.6 fps。两步法可以准确识别背景复杂的品牌号码。它还为牲畜个体识别提供了一种稳定、轻便的方法。
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引用次数: 0
UAV-based field watermelon detection and counting using YOLOv8s with image panorama stitching and overlap partitioning 使用 YOLOv8s 进行基于无人机的田间西瓜检测和计数,并进行图像全景拼接和重叠分割
IF 8.2 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2024-09-01 DOI: 10.1016/j.aiia.2024.09.001
Liguo Jiang , Hanhui Jiang , Xudong Jing , Haojie Dang , Rui Li , Jinyong Chen , Yaqoob Majeed , Ramesh Sahni , Longsheng Fu

Accurate watermelon yield estimation is crucial to the agricultural value chain, as it guides the allocation of agricultural resources as well as facilitates inventory and logistics planning. The conventional method of watermelon yield estimation relies heavily on manual labor, which is both time-consuming and labor-intensive. To address this, this work proposes an algorithmic pipeline that utilizes unmanned aerial vehicle (UAV) videos for detection and counting of watermelons. This pipeline uses You Only Look Once version 8 s (YOLOv8s) with panorama stitching and overlap partitioning, which facilitates the overall number estimation of watermelons in field. The watermelon detection model, based on YOLOv8s and obtained using transfer learning, achieved a detection accuracy of 99.20 %, demonstrating its potential for application in yield estimation. The panorama stitching and overlap partitioning based detection and counting method uses panoramic images as input and effectively mitigates the duplications compared with the video tracking based detection and counting method. The counting accuracy reached over 96.61 %, proving a promising application for yield estimation. The high accuracy demonstrates the feasibility of applying this method for overall yield estimation in large watermelon fields.

准确的西瓜产量估算对农业价值链至关重要,因为它可以指导农业资源的分配,促进库存和物流规划。传统的西瓜产量估算方法严重依赖人工,既耗时又耗力。针对这一问题,本研究提出了一种利用无人飞行器(UAV)视频进行西瓜检测和计数的算法流水线。该流水线使用全景拼接和重叠分割的 You Only Look Once version 8 s(YOLOv8s),有助于对田间西瓜的总体数量进行估算。基于 YOLOv8s 并利用迁移学习获得的西瓜检测模型的检测准确率达到 99.20%,证明了其在产量估算中的应用潜力。基于全景拼接和重叠分割的检测和计数方法使用全景图像作为输入,与基于视频跟踪的检测和计数方法相比,有效地减少了重复。计数精度达到 96.61 % 以上,证明在产量估算中的应用前景广阔。高精度证明了将该方法应用于大面积西瓜田整体产量估算的可行性。
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引用次数: 0
Prediction of spatial heterogeneity in nutrient-limited sub-tropical maize yield: Implications for precision management in the eastern Indo-Gangetic Plains 营养有限的亚热带玉米产量的空间异质性预测:对印度-甘肃平原东部精确管理的影响
IF 8.2 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2024-09-01 DOI: 10.1016/j.aiia.2024.08.001
Zia Uddin Ahmed , Timothy J. Krupnik , Jagadish Timsina , Saiful Islam , Khaled Hossain , A.S.M. Alanuzzaman Kurishi , Shah-Al Emran , M. Harun-Ar-Rashid , Andrew J. McDonald , Mahesh K. Gathala

Knowledge of the factors influencing nutrient-limited subtropical maize yield and subsequent prediction is crucial for effective nutrient management, maximizing profitability, ensuring food security, and promoting environmental sustainability. We analyzed data from nutrient omission plot trials (NOPTs) conducted in 324 farmers' fields across ten agroecological zones (AEZs) in the Eastern Indo-Gangetic Plains (EIGP) of Bangladesh to explain maize yield variability and identify variables controlling nutrient-limited yields. An additive main effect and multiplicative interaction (AMMI) model was used to explain maize yield variability with nutrient addition. Interpretable machine learning (ML) algorithms in automatic machine learning (AutoML) frameworks were subsequently used to predict attainable yield relative nutrient-limited yield (RY) and to rank variables that control RY. The stack-ensemble model was identified as the best-performing model for predicting RYs of N, P, and Zn. In contrast, deep learning outperformed all base learners for predicting RYK. The best model's square errors (RMSEs) were 0.122, 0.105, 0.123, and 0.104 for RYN, RYP, RYK, and RYZn, respectively. The permutation-based feature importance technique identified soil pH as the most critical variable controlling RYN and RYP. The RYK showed lower in the eastern longitudinal direction. Soil N and Zn were associated with RYZn. The predicted median RY of N, P, K, and Zn, representing average soil fertility, was 0.51, 0.84, 0.87, and 0.97, accounting for 44, 54, 54, and 48% upland dry season crop area of Bangladesh, respectively. Efforts are needed to update databases cataloging variability in land type inundation classes, soil characteristics, and INS and combine them with farmers' crop management information to develop more precise nutrient guidelines for maize in the EIGP.

了解影响养分有限的亚热带玉米产量的因素以及随后的预测,对于有效进行养分管理、实现收益最大化、确保粮食安全和促进环境可持续发展至关重要。我们分析了在孟加拉国东印度-遗传平原(EIGP)10 个农业生态区(AEZ)的 324 块农田中进行的养分遗漏小区试验(NOPTs)数据,以解释玉米产量的变异性并确定控制养分限制产量的变量。采用加性主效应和乘性交互作用(AMMI)模型来解释玉米产量随养分添加量的变化。随后使用自动机器学习(AutoML)框架中的可解释机器学习(ML)算法来预测相对养分限制产量(RY)的可达到产量,并对控制 RY 的变量进行排序。在预测氮、磷和锌的可实现产量方面,堆叠-集合模型被认为是表现最好的模型。相比之下,深度学习在预测 RYK 方面的表现优于所有基础学习器。RYN、RYP、RYK 和 RYZn 的最佳模型平方误差(RMSE)分别为 0.122、0.105、0.123 和 0.104。基于置换的特征重要性技术确定土壤 pH 值是控制 RYN 和 RYP 的最关键变量。RYK 在东经方向显示较低。土壤氮和锌与 RYZn 相关。代表平均土壤肥力的氮、磷、钾和锌的预测 RY 中值分别为 0.51、0.84、0.87 和 0.97,分别占孟加拉国高地旱季作物面积的 44%、54%、54% 和 48%。需要努力更新数据库,对土地类型淹没等级、土壤特性和 INS 的变化进行编目,并将其与农民的作物管理信息相结合,以制定更精确的 EIGP 玉米养分指南。
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Artificial Intelligence in Agriculture
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