Personalized Image Generation via Human-in-the-loop Bayesian Optimization

Fuente: arXiv
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Main Authors: Rajagopalan, Rajalaxmi, Dutta, Debottam, Wei, Yu-Lin, Choudhury, Romit Roy
Format: Preprint
Published: 2026
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author Rajagopalan, Rajalaxmi
Dutta, Debottam
Wei, Yu-Lin
Choudhury, Romit Roy
author_facet Rajagopalan, Rajalaxmi
Dutta, Debottam
Wei, Yu-Lin
Choudhury, Romit Roy
contents Imagine Alice has a specific image $x^\ast$ in her mind, say, the view of the street in which she grew up during her childhood. To generate that exact image, she guides a generative model with multiple rounds of prompting and arrives at an image $x^{p*}$. Although $x^{p*}$ is reasonably close to $x^\ast$, Alice finds it difficult to close that gap using language prompts. This paper aims to narrow this gap by observing that even after language has reached its limits, humans can still tell when a new image $x^+$ is closer to $x^\ast$ than $x^{p*}$. Leveraging this observation, we develop MultiBO (Multi-Choice Preferential Bayesian Optimization) that carefully generates $K$ new images as a function of $x^{p*}$, gets preferential feedback from the user, uses the feedback to guide the diffusion model, and ultimately generates a new set of $K$ images. We show that within $B$ rounds of user feedback, it is possible to arrive much closer to $x^\ast$, even though the generative model has no information about $x^\ast$. Qualitative scores from $30$ users, combined with quantitative metrics compared across $5$ baselines, show promising results, suggesting that multi-choice feedback from humans can be effectively harnessed for personalized image generation.
format Preprint
id arxiv_https___arxiv_org_abs_2602_02388
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Personalized Image Generation via Human-in-the-loop Bayesian Optimization
Rajagopalan, Rajalaxmi
Dutta, Debottam
Wei, Yu-Lin
Choudhury, Romit Roy
Computer Vision and Pattern Recognition
Machine Learning
Imagine Alice has a specific image $x^\ast$ in her mind, say, the view of the street in which she grew up during her childhood. To generate that exact image, she guides a generative model with multiple rounds of prompting and arrives at an image $x^{p*}$. Although $x^{p*}$ is reasonably close to $x^\ast$, Alice finds it difficult to close that gap using language prompts. This paper aims to narrow this gap by observing that even after language has reached its limits, humans can still tell when a new image $x^+$ is closer to $x^\ast$ than $x^{p*}$. Leveraging this observation, we develop MultiBO (Multi-Choice Preferential Bayesian Optimization) that carefully generates $K$ new images as a function of $x^{p*}$, gets preferential feedback from the user, uses the feedback to guide the diffusion model, and ultimately generates a new set of $K$ images. We show that within $B$ rounds of user feedback, it is possible to arrive much closer to $x^\ast$, even though the generative model has no information about $x^\ast$. Qualitative scores from $30$ users, combined with quantitative metrics compared across $5$ baselines, show promising results, suggesting that multi-choice feedback from humans can be effectively harnessed for personalized image generation.
title Personalized Image Generation via Human-in-the-loop Bayesian Optimization
topic Computer Vision and Pattern Recognition
Machine Learning
url https://arxiv.org/abs/2602.02388