Active Learning for Fine-Grained Sketch-Based Image Retrieval

• URL: http://arxiv.org/abs/2309.08743v1
• Date: Fri, 15 Sep 2023 20:07:14 GMT
• Title: Active Learning for Fine-Grained Sketch-Based Image Retrieval
• Authors: Himanshu Thakur, Soumitri Chattopadhyay
• Abstract summary: The ability to retrieve a photo by mere free-hand sketching highlights the immense potential of Fine-grained sketch-based image retrieval (FG-SBIR) We propose a novel active learning sampling technique that drastically minimises the need for drawing photo sketches.
• Score: 1.994307489466967
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The ability to retrieve a photo by mere free-hand sketching highlights the immense potential of Fine-grained sketch-based image retrieval (FG-SBIR). However, its rapid practical adoption, as well as scalability, is limited by the expense of acquiring faithful sketches for easily available photo counterparts. A solution to this problem is Active Learning, which could minimise the need for labeled sketches while maximising performance. Despite extensive studies in the field, there exists no work that utilises it for reducing sketching effort in FG-SBIR tasks. To this end, we propose a novel active learning sampling technique that drastically minimises the need for drawing photo sketches. Our proposed approach tackles the trade-off between uncertainty and diversity by utilising the relationship between the existing photo-sketch pair to a photo that does not have its sketch and augmenting this relation with its intermediate representations. Since our approach relies only on the underlying data distribution, it is agnostic of the modelling approach and hence is applicable to other cross-modal instance-level retrieval tasks as well. With experimentation over two publicly available fine-grained SBIR datasets ChairV2 and ShoeV2, we validate our approach and reveal its superiority over adapted baselines.

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