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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…

Machine Learning · Statistics 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…

Computer Vision and Pattern Recognition · Computer Science 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…

Computer Vision and Pattern Recognition · Computer Science 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…

Computer Vision and Pattern Recognition · Computer Science 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),…

Machine Learning · Computer Science 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…

Machine Learning · Computer Science 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,…

Computational Geometry · Computer Science 2023-11-14 Karl Bringmann , Nick Fischer , Ivor van der Hoog , Evangelos Kipouridis , Tomasz Kociumaka , Eva Rotenberg

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…

Machine Learning · Computer Science 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…

Image and Video Processing · Electrical Eng. & Systems 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…

Machine Learning · Computer Science 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…

Computer Vision and Pattern Recognition · Computer Science 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,…

Computer Vision and Pattern Recognition · Computer Science 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…

Computer Vision and Pattern Recognition · Computer Science 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…

Computer Vision and Pattern Recognition · Computer Science 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…

Computer Vision and Pattern Recognition · Computer Science 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…

Quantitative Methods · Quantitative Biology 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…

Machine Learning · Computer Science 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…

Computer Vision and Pattern Recognition · Computer Science 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…

Machine Learning · Computer Science 2020-12-09 Bashar Alhnaity , Stefanos Kollias , Georgios Leontidis , Shouyong Jiang , Bert Schamp , Simon Pearson