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Developing image datasets is difficult, especially for agricultural applications. Collecting and annotating images pose major challenges.
Labeling is Time Consuming
Time consuming
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Image Collection
Data hungry deep learning models require hundreds of thousands, sometimes millions, of images to train
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other have noted that manually labeling images can take minutes to hours (Table 1)
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and become invariant to changes in location, lighting, backgrounds, or other factors. Devising high-throughput systems is necessary to capture hundreds of thousands of images of weeds at various growth stages while affected by field-like conditions. A network of agronomic, hardware, and software engineers is needed to automate large scale image collection.
Labeling is Time Consuming
Pixel-wise labels must be accurate. The process of labeling by hand can take minutes to hours even when using third-part annotation tools. Many have reported the high time requirement needed for labeling images of weeds.
Source | Annotation Technique | Scene type | Time |
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manual segmentation of cutouts | Simple | 5-30 min / real image | |
Skovsen et al. (2019) (in conversation) | manual segmentation of cutouts | complex (field) | hour(s) / real images |
manual segmentation of drone images of 3 classes | complex (field) | 60 min / image | |
manual segmentation 3 classes | complex (field) | 2-4 hrs / image |
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