Multispectral Fine-Grained Classification of Blackgrass in Wheat and Barley Crops

• URL: http://arxiv.org/abs/2405.02218v1
• Date: Fri, 3 May 2024 16:23:41 GMT
• Title: Multispectral Fine-Grained Classification of Blackgrass in Wheat and Barley Crops
• Authors: Madeleine Darbyshire, Shaun Coutts, Eleanor Hammond, Fazilet Gokbudak, Cengiz Oztireli, Petra Bosilj, Junfeng Gao, Elizabeth Sklar, Simon Parsons,
• Abstract summary: Blackgrass is a major grass weed which causes particular problems in cereal crops in north-west Europe. With the use of machine vision and multispectral imaging, we investigate the effectiveness of state-of-the-art methods to identify blackgrass.
• Score: 2.580056799681784
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: As the burden of herbicide resistance grows and the environmental repercussions of excessive herbicide use become clear, new ways of managing weed populations are needed. This is particularly true for cereal crops, like wheat and barley, that are staple food crops and occupy a globally significant portion of agricultural land. Even small improvements in weed management practices across these major food crops worldwide would yield considerable benefits for both the environment and global food security. Blackgrass is a major grass weed which causes particular problems in cereal crops in north-west Europe, a major cereal production area, because it has high levels of of herbicide resistance and is well adapted to agronomic practice in this region. With the use of machine vision and multispectral imaging, we investigate the effectiveness of state-of-the-art methods to identify blackgrass in wheat and barley crops. As part of this work, we provide a large dataset with which we evaluate several key aspects of blackgrass weed recognition. Firstly, we determine the performance of different CNN and transformer-based architectures on images from unseen fields. Secondly, we demonstrate the role that different spectral bands have on the performance of weed classification. Lastly, we evaluate the role of dataset size in classification performance for each of the models trialled. We find that even with a fairly modest quantity of training data an accuracy of almost 90% can be achieved on images from unseen fields.

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