Find your Needle: Small Object Image Retrieval via Multi-Object Attention Optimization

• URL: http://arxiv.org/abs/2503.07038v1
• Date: Mon, 10 Mar 2025 08:27:02 GMT
• Title: Find your Needle: Small Object Image Retrieval via Multi-Object Attention Optimization
• Authors: Mihcael Green, Matan Levy, Issar Tzachor, Dvir Samuel, Nir Darshan, Rami Ben-Ari,
• Abstract summary: We address the challenge of Small Object Image Retrieval (SoIR), where the goal is to retrieve images containing a specific small object, in a cluttered scene.<n>Key challenge is constructing a single image descriptor, for scalable and efficient search, that effectively represents all objects in the image.<n>We introduce Multi-object Attention Optimization (MaO), a novel retrieval framework which incorporates a dedicated multi-object pre-training phase.
• Score: 5.2337753974570616
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: We address the challenge of Small Object Image Retrieval (SoIR), where the goal is to retrieve images containing a specific small object, in a cluttered scene. The key challenge in this setting is constructing a single image descriptor, for scalable and efficient search, that effectively represents all objects in the image. In this paper, we first analyze the limitations of existing methods on this challenging task and then introduce new benchmarks to support SoIR evaluation. Next, we introduce Multi-object Attention Optimization (MaO), a novel retrieval framework which incorporates a dedicated multi-object pre-training phase. This is followed by a refinement process that leverages attention-based feature extraction with object masks, integrating them into a single unified image descriptor. Our MaO approach significantly outperforms existing retrieval methods and strong baselines, achieving notable improvements in both zero-shot and lightweight multi-object fine-tuning. We hope this work will lay the groundwork and inspire further research to enhance retrieval performance for this highly practical task.

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