Training-free Conditional Image Embedding Framework Leveraging Large Vision Language Models

Fuente: arXiv
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Hauptverfasser: Kawarada, Masayuki, Yamada, Kosuke, Tejero-de-Pablos, Antonio, Inoue, Naoto
Format: Preprint
Veröffentlicht: 2025
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author Kawarada, Masayuki
Yamada, Kosuke
Tejero-de-Pablos, Antonio
Inoue, Naoto
author_facet Kawarada, Masayuki
Yamada, Kosuke
Tejero-de-Pablos, Antonio
Inoue, Naoto
contents Conditional image embeddings are feature representations that focus on specific aspects of an image indicated by a given textual condition (e.g., color, genre), which has been a challenging problem. Although recent vision foundation models, such as CLIP, offer rich representations of images, they are not designed to focus on a specified condition. In this paper, we propose DIOR, a method that leverages a large vision-language model (LVLM) to generate conditional image embeddings. DIOR is a training-free approach that prompts the LVLM to describe an image with a single word related to a given condition. The hidden state vector of the LVLM's last token is then extracted as the conditional image embedding. DIOR provides a versatile solution that can be applied to any image and condition without additional training or task-specific priors. Comprehensive experimental results on conditional image similarity tasks demonstrate that DIOR outperforms existing training-free baselines, including CLIP. Furthermore, DIOR achieves superior performance compared to methods that require additional training across multiple settings.
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id arxiv_https___arxiv_org_abs_2512_21860
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Training-free Conditional Image Embedding Framework Leveraging Large Vision Language Models
Kawarada, Masayuki
Yamada, Kosuke
Tejero-de-Pablos, Antonio
Inoue, Naoto
Computer Vision and Pattern Recognition
Conditional image embeddings are feature representations that focus on specific aspects of an image indicated by a given textual condition (e.g., color, genre), which has been a challenging problem. Although recent vision foundation models, such as CLIP, offer rich representations of images, they are not designed to focus on a specified condition. In this paper, we propose DIOR, a method that leverages a large vision-language model (LVLM) to generate conditional image embeddings. DIOR is a training-free approach that prompts the LVLM to describe an image with a single word related to a given condition. The hidden state vector of the LVLM's last token is then extracted as the conditional image embedding. DIOR provides a versatile solution that can be applied to any image and condition without additional training or task-specific priors. Comprehensive experimental results on conditional image similarity tasks demonstrate that DIOR outperforms existing training-free baselines, including CLIP. Furthermore, DIOR achieves superior performance compared to methods that require additional training across multiple settings.
title Training-free Conditional Image Embedding Framework Leveraging Large Vision Language Models
topic Computer Vision and Pattern Recognition
url https://arxiv.org/abs/2512.21860