Bridging Domain Gaps for Fine-Grained Moth Classification Through Expert-Informed Adaptation and Foundation Model Priors

• URL: http://arxiv.org/abs/2508.20089v1
• Date: Wed, 27 Aug 2025 17:55:39 GMT
• Title: Bridging Domain Gaps for Fine-Grained Moth Classification Through Expert-Informed Adaptation and Foundation Model Priors
• Authors: Ross J Gardiner, Guillaume Mougeot, Sareh Rowlands, Benno I Simmons, Flemming Helsing, Toke Thomas Høye,
• Abstract summary: We propose a lightweight classification approach combining limited expert-labelled field data with knowledge distillation.<n>Experiments on 101 Danish moth species from AMI camera systems demonstrate that BioCLIP2 substantially outperforms other methods.<n>These insights offer practical guidelines for the development of efficient insect monitoring systems.
• Score: 0.18914065769207292
• License: http://creativecommons.org/publicdomain/zero/1.0/
• Abstract: Labelling images of Lepidoptera (moths) from automated camera systems is vital for understanding insect declines. However, accurate species identification is challenging due to domain shifts between curated images and noisy field imagery. We propose a lightweight classification approach, combining limited expert-labelled field data with knowledge distillation from the high-performance BioCLIP2 foundation model into a ConvNeXt-tiny architecture. Experiments on 101 Danish moth species from AMI camera systems demonstrate that BioCLIP2 substantially outperforms other methods and that our distilled lightweight model achieves comparable accuracy with significantly reduced computational cost. These insights offer practical guidelines for the development of efficient insect monitoring systems and bridging domain gaps for fine-grained classification.

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