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Comparing data defined over space and time is notoriously hard, because it involves quantifying both spatial and temporal variability, while at the same time taking into account the chronological structure of data. Dynamic Time Warping…

机器学习 · 统计学 2019-11-12 Hicham Janati , Marco Cuturi , Alexandre Gramfort

Crop yield prediction is essential for agricultural planning but remains challenging due to the complex interactions between weather, climate, and management practices. To address these challenges, we introduce a deep learning-based…

计算机视觉与模式识别 · 计算机科学 2024-11-27 Hamid Kamangir , Brent. S. Sams , Nick Dokoozlian , Luis Sanchez , J. Mason. Earles

Robotic crop phenotyping has emerged as a key technology to assess crops' morphological and physiological traits at scale. These phenotypical measurements are essential for developing new crop varieties with the aim of increasing…

计算机视觉与模式识别 · 计算机科学 2023-10-23 David Liu , Zhengkun Li , Zihao Wu , Changying Li

An experimental field cropped with sugar-beet with a wide spreading of weeds has been used to test vegetation identification from drone visible imagery. Expert masked and hue-filtered pictures have been used to train several Machine…

计算机视觉与模式识别 · 计算机科学 2022-05-24 Giuliano Vitali

Time series are high-dimensional and complex data objects, making their efficient search and indexing a longstanding challenge in data mining. Building on a recently introduced similarity measure, namely Multiscale Dubuc Distance (MDD),…

机器学习 · 计算机科学 2025-10-28 Azim Ahmadzadeh , Mahsa Khazaei , Elaina Rohlfing

Understanding and accurately predicting within-field spatial variability of crop yield play a key role in site-specific management of crop inputs such as irrigation water and fertilizer for optimized crop production. However, such a task is…

机器学习 · 计算机科学 2018-11-19 Long Nguyen , Jia Zhen , Zhe Lin , Hanxiang Du , Zhou Yang , Wenxuan Guo , Fang Jin

The Dynamic Time Warping (DTW) distance is a popular similarity measure for polygonal curves (i.e., sequences of points). It finds many theoretical and practical applications, especially for temporal data, and is known to be a robust,…

Dynamic Time Warping (DTW) is a popular time series distance measure that aligns the points in two series with one another. These alignments support warping of the time dimension to allow for processes that unfold at differing rates. The…

机器学习 · 计算机科学 2023-03-30 Matthieu Herrmann , Chang Wei Tan , Geoffrey I. Webb

Understanding land use over time is critical to tracking events related to climate change, like deforestation. However, satellite-based remote sensing tools which are used for monitoring struggle to differentiate vegetation types in farms…

图像与视频处理 · 电气工程与系统科学 2025-02-27 Angela Busheska , Vikram Iyer , Bruno Silva , Peder Olsen , Ranveer Chandra , Vaishnavi Ranganathan

Dynamic time warping (DTW) is a well-known algorithm for time series elastic dissimilarity measure. Its ability to deal with non-linear time distortions makes it helpful in variety of data mining tasks. Such a task is also anomaly detection…

机器学习 · 计算机科学 2023-10-05 Matej Kloska , Gabriela Grmanova , Viera Rozinajova

The availability of massive earth observing satellite data provide huge opportunities for land use and land cover mapping. However, such mapping effort is challenging due to the existence of various land cover classes, noisy data, and the…

计算机视觉与模式识别 · 计算机科学 2021-09-29 Rahul Ghosh , Praveen Ravirathinam , Xiaowei Jia , Chenxi Lin , Zhenong Jin , Vipin Kumar

The growing popularity of online sports and exercise necessitates effective methods for evaluating the quality of online exercise executions. Previous action quality assessment methods, which relied on labeled scores from motion videos,…

计算机视觉与模式识别 · 计算机科学 2024-10-29 Renguang Chen , Guolong Zheng , Xu Yang , Zhide Chen , Jiwu Shu , Wencheng Yang , Kexin Zhu , Chen Feng

We introduce a weakly supervised method for representation learning based on aligning temporal sequences (e.g., videos) of the same process (e.g., human action). The main idea is to use the global temporal ordering of latent correspondences…

计算机视觉与模式识别 · 计算机科学 2021-05-12 Isma Hadji , Konstantinos G. Derpanis , Allan D. Jepson

Weed and crop segmentation is becoming an increasingly integral part of precision farming that leverages the current computer vision and deep learning technologies. Research has been extensively carried out based on images captured with a…

计算机视觉与模式识别 · 计算机科学 2022-10-24 Junfeng Gao , Wenzhi Liao , David Nuyttens , Peter Lootens , Erik Alexandersson , Jan Pieters

The increase in the use of photovoltaic (PV) energy in the world has shown that the useful life and maintenance of a PV plant directly depend on theability to quickly detect severe faults on a PV plant. To solve this problem of detection,…

Crop row detection enables autonomous robots to navigate in gps denied environments. Vision based strategies often struggle in the environments due to gaps, curved crop rows and require post-processing steps. Furthermore, labeling crop rows…

计算机视觉与模式识别 · 计算机科学 2025-10-07 Rahul Harsha Cheppally , Ajay Sharda

Time series data on cropping pattern at disaggregated level were analysed and its implications on geospatial drought assessment were demonstrated. An index of Cropping Pattern Dissimilarity (CP-DI) between a pair of years, developed in this…

定量方法 · 定量生物学 2016-10-31 C. S. Murthy , M. V. R. Sesha Sai , M. Naresh Kumar , P. S. Roy

Time-series data originate from various applications that describe specific observations or quantities of interest over time. Their analysis often involves the comparison across different time-series data sequences, which in turn requires…

机器学习 · 计算机科学 2024-02-15 Kishansingh Rajput , Duong Binh Nguyen , Guoning Chen

In light of growing challenges in agriculture with ever growing food demand across the world, efficient crop management techniques are necessary to increase crop yield. Precision agriculture techniques allow the stakeholders to make…

计算机视觉与模式识别 · 计算机科学 2020-06-23 Akshay L Chandra , Sai Vikas Desai , Wei Guo , Vineeth N Balasubramanian

Multi-step prediction is considered of major significance for time series analysis in many real life problems. Existing methods mainly focus on one-step-ahead forecasting, since multiple step forecasting generally fails due to accumulation…

机器学习 · 计算机科学 2020-12-09 Bashar Alhnaity , Stefanos Kollias , Georgios Leontidis , Shouyong Jiang , Bert Schamp , Simon Pearson